An Evaluation
of
High Altitude
Engine Modification Devices
(Econo-Kit)
March, 1976
prepared for:
Environmental Protection Agency
Region VIII
submitted by:
Automotive Testing Laboratories, Inc.
19900 East Colfax Avenue
Aurora, Colorado 80011
(303) 343-8938

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This report was furnished to the U. S. Environmental Protection
Agency by Automotive Testing Laboratories, Inc. in fulfillment of
Contract No. 68-02-2315. The contents of the report are reproduced
herein as received from Automotive Testing Laboratories, Inc. The
opinions, findings and conclusions expressed are those of the authors
and not necessarily those of the Environmental Protection Agency.
Mention of company or product names is not to be considered as an
endorsement by the Environmental Protection Agency.
ii

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0i4S
6' I
CONTENTS
1.	INTRODUCTION	1-1
2.	VEHICLE TEST PROGRAM	2-1
2.1	GENERAL DESIGN	2-1
2.2	SAMPLE SIZE	2-3
2.3	VEHICLE ACCEPTANCE AND INITIAL HANDLING	2-3
2.4	TEST SEQUENCE	2-5
2.5	EXHAUST EMISSION TEST PROCEDURES	2-5
2.6	ENGINE ADJUSTMENT AND KIT INSTALLATION
PROCEDURES	2-5
3.	SUMMARY OF TEST RESULTS	3-1
(- ¦ -1. u
ill

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LIST OF TABLES
1.	Vehicle Sample by Model Year, Engine Size
and Sample	2-4
2.	Engine Parameter Status at Each Test Point
During Phase I and Phase n^Testing	2-7
3.	Hot Start Data, 1968-1972 Mcdel Years, Baseline
vs. Maintenance on 18 Vehicles	3-2
4.	Cold Start Datap 1968-1972 Model Years, Base-
line vs. Maintenance on 11 Vehicles	3-2
5.	Hot Start Data, 1968-1972 Model Years, Baseline
vs. Maintenance/Parametric Adjustments/Device
on 18 Vehicles	3-3
6.	Cold Start Data, 1968-1972 Model Years, Baseline
vs. Maintenance/Parametric Adjustments/Device
on 11 Vehicles	3-3
7.	Hot Start Data, 1968-1972 Model Years,
Maintenance vs. Maintenance/Parametric
Adjustments/Device on 18 Vehicles	3-3
8.	Cold Start Data, 1968-1972 Model Years,
Maintenance vs. Maintenance/Parametric
Adjustments/Device on 11 Vehicles	3-3
9.	Hot Start Data, 1968-1972 Model Years, Baseline
vs. No Maintenance/Parametric Adjustments/
Device on 11 Vehicles	3-4
10.	Cold Start Data, 1968-1972 Model Years, Base-
line vs. No Maintenance/Parametric Adjustments/
Device on 11 Vehicles	3-4
11.	Hot Start Data, 1968-1972 Model Years, No
Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device on
11 Vehicles	3-4
12.	Cold Start Data, 1968-1972 Model Years, No
Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device on
11 Vehicles	3-4
13.	Hot Start Data, 1973-1974 Model Years, Baseline
vs. Maintenance on 15"Vehicles	3-6
iv

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LIST OF TABLES (CONT.)
Page
14.	Cold Start Data, 1973-1974 Model Years,
Baseline vs. Maintenance on 9 Vehicles	3-6
15.	Hot Start Data, 1973-1974 Model Years, Base-
line vs. Maintenance/Parametric Adjustments/
Device on 15 Vehicles	3-6
16.	Cold Start Data, 1973-1974 Model Years, Base-
line vs. Maintenance/Parametric Adjustments/
Device on 9 Vehicles	3-6
17.	Hot Start Data, 1973-1974 Model Years,
Maintenance vs. Maintenance/Parametric
Adjustments/Device on 15 Vehicles	3-7
18.	Cold Start Data, 1973-1974 Model Years,
Maintenance vs. Maintenance/Parametric
Adjustments/Device on 9 Vehicles	3-7
19.	Hot Start Data, 1973-1974 Model Years, Base-
line vs. No Maintenance/Parametric Adjustments/
Device on 9 Vehicles	3-7
20.	Cold Start Data, 1973-1974 Model Years, Base-
line vs. No Maintenance/Parametric Adjustments/
Device on 9 Vehicles	3-7
21.	Hot Start Data, 1973-1974 Model Years, No
Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device on 9
Vehicles	3-8
22.	Cold Start Data, 1973-1974 Model Years, No
Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device on
9 Vehicles	3-8
23.	Hot Start Data, 1975 Model Year, Baseline vs.
Maintenance on 20 Vehicles	3-9
24.	Cold Start Data, 1975 Model Year, Baseline vs.
Maintenance on 20 Vehicles	3-9
25.	Hot Start Data, 1975 Model Year, Baseline vs.
Maintenance/Parametric Adjustments/Device on
20 Vehicles	3-10
26.	Cold Start Data, 1975 Model Year, Baseline
vs. Maintenance/Parametric Adjustments/Device
on 20 Vehicles	3-10
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LIST OF TABLES (CONT.)
Page
27.	Hot Start Data, 1975 Model Year, Maintenance vs.
Maintenance/Parametric Adjustments/Device on
20 Vehicles	3-10
28.	Cold Start Data, 1975 Model Year, Maintenance
vs. Maintenance/Parametric Adjustments/Device
on 20 Vehicles	3-10
29.	Hot Start Data, 1975 Model Year, Baseline vs.
Maintenance/Parametric Adjustments/No Device
on 15 Vehicles	3-11
30.	Cold Start Data, 1975 Model Year, Baseline vs.
Maintenance/Parametric Adjustments/No Device
on 15 Vehicles	3-11
31* Hot Start Data, 1975 Model Year, Maintenance/
Parametric Adjustnents/No Device vs. Maintenance/
Parametric Adjustments/Device on 15 Vehicles	3-11
32.	Cold Start Data, 1975 Model Year, Maintenance/
Parametric Adjustments/No Device vs. Maintenance/
Parametric Adjustments/Device on 15 Vehicles	3-11
33.	Hot Start Data, 1968-1972 Model Years, Baseline
as Parametric Adjustment/Device on IS Vehicles
and 90 Percent Confidence Intervals (CI)	3-12
34.	Hot Start Data, 1973-1974 Model Years, Baseline
vs. Parametric Adjustments/Device on 20 Vehicles
and 90 Percent Confidence Intervals (CI)	3-12
35.	Hot Start Data, 1975 Model Year, Baseline vs.
Parametric Adjustments/Device on .22 Vehicles,1
and 90 Percent Confidence Interval (CI)	3-13
36.	Cold Start Data, 1968-1972 Model Years, Base-
line vs. Parametric Adjustments/Device on 11
Vehicles and 90 Percent Confidence Intervals	3-13
37.	Cold Start Data, 1973-1974 Model Years, Base-
line vs. Parametric Adjustments/Device on 10
Vehicles and 90 Percent Confidence Intervals	3-14
38.	Cold Start Data, 1975 Model Year, Baseline vs.
Parametric Adjustments/Device on 22 Vehicles
and 90 Percent Confidence Intervals (CI)	3-14
vi

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1. INTRODUCTION
The Federal program for controlling emissions from motor vehicles
has been generally effective as shown by results from the nationwide
Emission Factors and other study programs. In Colorado and other high
altitude areas, however, the motor vehicle continues to play a dispro-
portionate and adverse role in atmospheric pollution due to fuel enrich-
ment and other inherent factors associated with engine operation in
these areas. As a consequence, a sizeable potential exists not only
for emission reduction in elevated areas, but for fuel economy improve-
ment as well.
In this respect, a study* conducted by the Colorado Department of
Health had earlier indicated exhaust gas recirculation/air bleed (EGR/AB)
devices with given calibrations and engine settings were effective in
reducing hydrocarbon (HC), carbon monoxide (CO) and oxides of nitrogen
(N0>;) emissions at Denver's altitude without adverse effects on fuel
economy. Air bleed devices alone were found to produce similar results
although installation was generally accompanied by an increase in N0X
emissions. Other engine settings and EER/AB and air bleed devices were
found to lower HC and CO emissions, control or cause increases in NOx
and improve fuel economy.
In keeping with its objective of supporting states in their efforts
to implement air quality programs, Region VIII of the Environmental
Protection Agency (EPA), which has as its responsibility the geographi-
cally elevated Rocky Mountain area, elected to evaluate specific EGR/AB
* Volume II of Colorado's High Altitude Vehiclular Emission Control
Program.
1-1

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devices more extensively based on limited test data presented to it by
the manufacturer. Region VIII subsequently designed an experimental
program to evaluate the devices and contracted with Automotive Testing
Laboratories, Inc. to perform the evaluation.
The devices, marketed under the brand name of Econo-Kit by Clean
Air Research Company of San Diego, California, include certain parametric
adjustments to help compensate for the high altitude effect on carbu-
retion and combustion in the conventional automobile engine. These
adjustments, which include certain ignition timing and carburetor idle
circuit settings, are considered an integral part of the installation.
The kit itself contains an oversized PCV valve (the air bleed component)
for application to N0X controlled vehicles (1973 and newer), an oversized
PCV valve and a modulated* EGR valve for application to 1972 and older
vehicles, and associated hose, tubing lengths and mounting hardware.
According to the manufacturer, the combination of parametric adjustments
and the "hardware" portion of the kits provide a better balance between
fuel consumption, exhaust emissions and engine performance at high
altitude while allowing the engine to operate satisfactorily at the
design fuel octane level.
1-2

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2. VEHICLE TEST PROGRAM
2.1 GENERAL DESIGN
The program involved a series of tests on sixty vehicles from
model-years 1968 through 1975 with emphasis on establishing possible
emission control and fuel economy benefits. The specific purposes in
these regards were to evaluate:
The effects of an EGR/AB system on pre-NOx controlled
1968-1972 model-year vehicles.
The effects of an air bleed modification on N0X controlled
1973-1974 model-year vehicles.
The effects of an air bleed modification on 1975 model-
year vehicles.
The program was designed to be performed in two phases to accomo-
date any necessary changes in the vehicle sample, engine adjustment and/
or device treatment, or in the testing sequence. Between the two phases,
modifications were isads in each of these areas to permit the devices to
be evaluated more definitively. Provisions to enable the Econo-Kit
representative to optimise both engine and hardware settings were also
included during each phase by allocating forty experimental emission
tests for this purpose.
Due to economic and other considerations, the vehicle sample was
not representative of the Denver area vehicle population. The sample
was nearly equally distributed by model-year groupings and was heavily
comprised of government-owned (GSA) vehicles and EPA employee-owned
vehicles. The balance of vehicles were privately owned. The GSA
vehicles included both passenger cars and light-duty trucks.
Test configurations varied in sequence depending on model-year,
device configuration and other factors. The specific sequence to
2-1

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which each vehicle and vehicle set was subjected is indicated in the
Appendices. With the exceptions noted, however, the sample generally
received:
A baseline test to establish emission and fuel economy
levels of the vehicle in the as-received or pre-maintenance
state.
A test after engine tune-up to establish the benefits of tune-up
and to establish device benefits in connection with vehicles
in the tuned state.
A test incorporating parametric carburetor and ignition timing
adjustments specified by the Econo-Kit representative, less
the devices.
A test incorporating both parametric adjustments and device
hardware, both of which constitute the full Econo-Kit.
Not all of the vehicles received a tune-up and, consequently, were not
tested in this configuration. Also, not all vehicles were tested in
the parametric adjustment less hardware configuration. The tune-ups
which were performed were limited in that relatively few new parts were
installed and the adjustments were essentially limited to ignition timing
and carburetor idle mixture and engine rpm adjustments. Certain new
ignition parts were installed on the 1968-1974 model-year vehicles,
however, on a routine basis.
The test procedure employed at each test point was the current
Federal mass emission test. This test is officially performed on a
vehicle after it has remained unstarted under controlled temperature
conditions a minimum of twelve hours. In certain cases, however, the
hot start version of this procedure was the only test performed. The
Federal test yields both cold and hot start mass emission values for
hydrocarbons (HC), carbon monoxide (CO), carbon dioxide (CO2) and
oxides of nitrogen (NOx)• Fuel economy was calculated by the carbon
2-2

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balance equation using mass HC, CO and CO2 emission values.
Econo-Kit installations and associated parametric engine adjustments
were performed by laboratory personnel under the training and supervision
provided by the Econo-Kit representative. Pre-packaged versions of the
kits were supplied.
Data processing was to include determinations of means and standard
deviations for the vehicle by manufacturer, model year, vehicle type
(truck or automobile), vehicle owner (GSA or private owner), control
options (air pump & catalytic converter), engine displacement class,
vehicle inertia weight class and the total sample.
2.2	SAMPLE SIZE
A sample of sixty vehicles, divided into three groups by model-year,
was tested. The 1968-1972 model-year vehicles were combined in one
group since NQx emission control (EGR) devices were not installed by the
manufacturer on vehicles produced during those nsdel years. In general,
these vehicles had the type of positive crankcase ventilation control
conducive to device installation. The 1973-1975 vehicles had the same
type of PCV control and manufacturer-installed NO* controls. Due to
the presence of the catalytic converter and a consequent lower emission
level, 1975 model-year vehicles were put into a separate group. A more
specific listing of the overall sample is presented in Table 1.
2.3	VEHICLE ACCEPTANCE AND INITIAL HANDLING
Each vehicle was inspected by laboratory personnel prior to
acceptance for testing. No vehicle was accepted which had a defective
muffler or exhaust pipe. Leaks in these systems tend to reduce the
observed emission levels. In addition, no vehicle was accepted which
had bad valves, rings or other major engine problems.
2-3

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Model Year
1968-1972

18
vehicles
1973-1974

20
vehicles
1975
Engine Size
22
vehicles
Less than
151
8
vehicles
151 - 250

12
vehicles
251 - 350

24
vehicles
More than
350
16
vehicles

Manufacturer

AMC

9
vehicles
Chrysler

18
vehicles
Ford

7
vehicles
GM

21
vehicles
Imports

5
vehicles
Table 1. Vehicle sample by model year, engine size and sample.
Upon acceptance, contracts were signed between the laboratory and
the vehicle owner delineating the respective responsibilities relative
to the vehicles. Before agreements were completed, a vehicle Inspection
with respect to body damage, missing hubcaps, and other similar defects
was made and the owner was alerted to any defects found. A similar
inspection was made upon return of the vehicle to the owner after
testing to demonstrate that the vehicle was being returned In its
original condition.
In preparation for testing, the snow tires or overly worn tires, as
applicable, were changed to the non-drive wheels. The vehicle's fuel
2-4

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was drained from the tank and test fuel added to 40% of tank volume.
Leaded or non-leaded Indolene type test fuel was used as required.
Each vehicle was then given a preparatory ten minute road test to purge
any remaining non-test fuel.
2.4	TEST SEQUENCE.
To some degree, the modification of test procedures during the
program dictated the number of subgroups. Each subgroup or vehicle set
is a class of vehicles sharing some common parameter (i.e., test sequence,
cylinder number, manufacturer, etc.). The various vehicle sets and the
tests .to which they were subjected are presented in the Appendices.
2.5	EXHAUST EMISSION TEST PROCEDURES
At each test point, an exhaust emission test was performed. The
1975 Federal Test Procedure (FTP) as specified in 40 F.R. 126 dated
June 30, 1975, was used for the conduct of cold start tests. A modified
version of the FTP was used for hot start tests.
2.6	ENGINE ADJUSTMENT AND KIT INSTALLATION PROCEDURES
Mechanical alterations of engine adjustments were performed through-
out the test sequence. At the time of vehicle receipt at the laboratory
an analysis was made of the condition of the primary engine components.
Measurements included:
Dwell
Basic timing
Idle RPK
Fast idle RPM
Tailpipe idle CO
Choke
2-5

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As-received parameters were left as measured with two exceptions.
Pre-1975 cars whose timing was not within + 3° of manufacturer recommended
settings were adjusted to manufacturer specifications. In addition, pre-
1975 vehicles whose tailpipe idle CO readings were not within the range c-f
5 + 2,5% were adjusted to 5% CO. The purpose of the adjustments was to
eliminate extremes in these regards. Prior to startup of the program an
evaluation was made of test results from previous programs to determine
average tailpipe CO levels for non-converter equipped vehicles. This
average CO value of 5% was applied to those pre-1975 vehicles tested in
the program.
For the tuneup test, vehicles were tuned to manufacturer's specifi-
cation 3. The 1968-1974 vehicles received new plugs, points, and condenser
on a routine basis. Other minor components such as plug wires, fuel
filter, air filter, PCV valve, and distributor rotor, were replaced, as
needed, at the mechanic's option. Replacement of parts on 19 75 model-year
vehicles was solely on an as-needed basis at the mechanic's option.
With regard to device installation and/or parametric adjustment
procedures, certain steps were followed to optimize overall emission and
fuel economy performance. During Phase I of the program, parametric
adjustments included setting thfe basic timing such that it was advanced
7 1/2 degrees from manufacturer specifications. Also, during this phase,
no choke adjustments were made. During Phase II of the program, chokes
were set three increments leaner than manufacturer specifications for
those tests requiring parametric adjustment and basic timing was advanced
only 5 degrees from manufacturer's specifications. The latter adjustment
was performed to minimize an increase in N0X emission. (See Table 2).
2-6

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Dwell
Basic
Timing
Idle RPM
FI RPM
Idle CO
Choke
Phase I






Baseline
N/A .
M/S + 3°*
N/A
N/A
52+2 1/2*
N/A
Tuneup
M/S
M/S
M/S
M/S
M/S
M/S
Parametric
N/A
M/S + 7 1/2°
M/S
M/S
LBI
N/A
Phase II






Baseline
N/A
M/S + 3°
N/A
N/A
5% + 2 1/2
N/A
Tuneup
M/S
M/S
M/S
M/S
M/S
M/S
Parametric
N/A
M/S + 5°
M/S
M/S
LBI
3L**
N/A -
Not Adjusted




M/S =
Manufacturer Specifications



ft B
If outside boundary set to spec.


LBI «
Lean Best Idle




** a
3 lean from manufacturer specifications


Table 2. Engine Parameter Status at Each Test Point during
Phase I and Phase II Testing.
After installation of the EGR system or the oversized PCV valve
(which acts as the air bleed), certain adjustments were required for the
optimum combination of emission reduction, performance» an^ driveability.
Carburetors with adjustable chokes were either turned three steps leaner
from manufacturer specifications (Phase II) or were not adjusted (Phase I).
Corrective adjustments to the idle mixture consisted of removing the
mixture limiter caps, if necessary, and adjusting the mixture screw (s)
about two turns richer than as-received. This step provided a richer
than lean-best-idle (LBI) condition.
2-7

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The next step was adjustment of the idle speed to 20 rpm higher
than manufacturer specifications in drive, or 30 rpm higher in neutral
depending on which was applicable. Single barrel carburetors were than
adjusted to the loan condition until ths oianufacturer specified rpm
T'73 3 £3 cLCri ed. Both adjustment screws of two or four barrel carburetors
were utilized sequentially so that a balanced condition resulted. If
at this point the idle was too rough, the mixture screws were richened
by 1/8 turn increments (maintaining balance) so as to prevent the too
lean condition from causing lean misfire and driveability problems.
2-8

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3. SUMMARY OF TEST RESULTS
In each of the tables presented in this section, percentages are
based on vehicle average data from the first test point listed minus
vehicle average data from the second test point listed. All comparisons
are referenced to the first test point. In the appendices, however,
percentages are calculated for each vehicle and, when combined for two
or more vehicles, reflect the average percentages for the included
vehicles.
The 1968-1972 model-year segment of the sample was comprised of
eighteen vehicles. Each of these vehicles was tested at the following
conditions:
Baseline
Manufacturer's Specifications (Tune-up)
Manufacturer's Specifications/Parametric Adjustments/
Device Installation
Eleven of the eighteen were also tested at the Parametric Adjustments/
Device Installation (Without Tune-up) condition. Both cold and hot
start data are available for the eleven but only hot start data are
available for the remaining seven vehicles.
Tables are provided to indicate results at various test conditions
and associated changes as follows:
Table 3, Baseline vs. Maintenance, Hot Start, 18 vehicles
Table 4, Baseline vs. Maintenance, Cold Start, 11 vehicles
Table 5, Baseline vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 11 vehicles
Table 6, Baseline vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 11 vehicles
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Table 7, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Hot Start, 18 vehicles
Table 8, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 11 vehicles
Table 9, Baseline V3. No Maintenance/Parametric Adjustments/
Device, Hot Start, 11 vehicles
Table 10, Baseline vs. No Maintenance/Parametric Adjust-
ments/Device, Cold Start, 11 vehicles
Table 11, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustnents/Device, Hot
Start, 11 vehicles
Table 12, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device, Cold
Start, 11 vehicles
last
Hoc Start
riP Ecai^siot
is (gr/mi)
Fusl
Condition
ur
CO
iiCx
(rapg)
BL
M
BL-M
BL-M
5.82
4.27
1.55
26.6 %
89.99
55.33
34.66
38.5 %
2.44
3.00
- 0.56
-23.0 %
14.9
15.4
-	0.5
-	3.4%
Table 3, Hot Start Data, 1968-1972 Model Years, Baseline vs.
Maintenance on 18 Vehicles.
Test
Cold Start
FTP Emissions (gr/mi)
Fuel
Condition
HC
CO
N0X
(mpg)
BL
7.93
110.21
2.76
13.0
M
6.07
76.88
3.23
13.4
BL-M
1.85
33.32
- 0.48
- 0.4
BL-M
23.3 %
30.23%
-17.4 Z
- 3.1%
Table 4. Cold Start Data, 1968-1972 Model Years, Baseline vs.
Maintenance on 11 Vehicles.
3-2

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Test

Hot Start
FTP Emissions
(gr/mi)

Fuel
Condition

HC
CO
NO*

(mpfi)
BL
M/PA/D
BL-M/PA/D
BL-M/PA/D

5.82
A.70
1.12
19.2 2
89.99
36.39
53.59
59.6 2
2.A4
2.A9
-0.0A
-1.6 2

1A.9
16.5
- 1.6
-10.72
Table 5.
Hot Start Data, 1968-1972 Model Years, Baseline vs.
Maintenance/Parametric Adjustments/Device on 18 Vehicles.
Test

Cold Start
FTP Emissions
(sr/mi)

Fuel
Condition

HC
CO
NOx

(epg)
BL
M/PA/D
BL-M/PA/D
BL-M/PA/D

7.93
6.51
1.A1
17.9 2
110.21
53.07
57.13
51.8	2
2.76
2.63
0.12
A.3 2

13.0
1A.8
- 1.8
-13.82
Table 6.
Cold Start Data, 1968-1972 Model Years, Baseline vs.
Maintenance/Parametric Adjustments/Device on 11 vehicles.
Test

Hot Start
FTP Emissions
(gr/mi)

Fuel
Condition

HC
CO
N0k


M
M/PA/D
M-M/PA/D
M-M/PA/D

A.27
A.70
- 0.A3
-10.1 2
55.33
36.39
18.93
3A.2 %
3.00
2.A9
0.51
17.0 Z

15.A
16.5
-	1.1
-	7.12
Table 7.
Hot Start Data, 1968-1972 Model Years, Maintenance vs.
Maintenance/Parametric Adjustments/Device on 18 Vehicles.
Test

Cold Start
FTP Emissions
(ar/mi)

Fuel
Condition

HC
CO
NO*

(mpg)
M
M/PA/D
M-M/PA/D
M-M/PA/D

6.07
6.51
-0.AA
-7.2 %
76.88
53.07
23.81
31.0 %
3.23
2.63
0.60
18.6 2

13. A
1A.8
- l.A
-10.AZ
Table 8. Cold Start Data, 1968-1972 Model Years, Maintenance vs.
Maintenance/Parametric Adjustment6/Device on 11 Vehicles.
3-3

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Test
Hot Start FTP Emissions
(gr/mi)
Fuel
Condition
HC CO
NOx
(raps)
BL
6.74 95.28
2.81
13.8
NM/PA/D
6.32 49.65
2.74
14.8
BL-NM/PA/D
0.42 45.63
0.08
- 0.9
BL-NM/PA/D
6.2 % 47.9 Z
2.8 Z
- 6.5%
Table 3. Hot Start Data, 1963-1972 Medal Years, Saselins
vs. No
Maintenance/Parametric Adjustments/Device on 11
Vehicles.
Ts3£
Cold Start FT? Emissions
(gr/iBi)
Fuel
Condition
HC CO
NOx
(icp»)
BL
7.93 110.21
2.76
13.0
NM/PA/D
6.70 57.39
2.73
14.0
BL-NM/PA/D
1.23 52.32
0.03
- 1.1
3L-NM/PA/D
15.5 % 47,9 %
1.1 %
- 3.5%
Table 10. Cold S
dart Data, 1058-1972 Model
Years, Baseline Vs. No
u?.aiti5:=
n a nc a / Paramo tzr ic Ad jus dnent
s/'Devica or. 1]
Vehicles.
Test
Hot Start FTP Emissions ()
NM/PA/D
6.32 49.65
2.74
14.8
M/PA/D
5.39 39.48
2.70
15.8
NM/PA/D-M/PA/D
.93 10.17
.04
- 1.0
NM/PA/D-M/PA/D
14.7 % 20.5 %
1.5 %
- 6.8%
Table 11, Hot Start Data, 1963-1972 Model Years, No Maintenance/
Parametric Adjustments/Device vs. Maintenance/Parametric
Adjustments/Device on 11 Vehicles.
Test
Cold Start FTP Emissions
(j>r/mi)
Fuel
Condition
HC
CO
NOx
(rapfO
NM/PA/D
6.70
57.39
2.73
14.0
M/PA/D
6.51
53.07
2.63
14.8
NM/PA/D-M/PA/D
0.18
4.32
0.10
- 0.7
NM/PA/D-M/PA/D
2.7 Z
7.5 Z
3.7 %
- 5.0%
Table 12. Cold Start Data, 1968-1972 Model Years, No Maintenance/
Parametric Adjustments/Device vs. Maintenance/Parametric
Adjustments/Device on 11 Vehicles.
3-4

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The 1973-1974 segment of the sample was comprised of twenty
vehicles. Each of these vehicles was tested at the Baseline condition.
Fifteen were also tested at the Manufacturer's Specifications (Tune-up)
and Manufacturer's Specifications/Parametric Adjustments/Device
Installation conditions. Hot start data are available for all twenty
vehicles while cold start data are available for only nine of the
vehicles.
Tables are provided to indicate results at various test conditions
and associated changes as follows:
Table 13, Baseline vs. Maintenance, Hot Start, 15 vehicles
Table 14, Baseline vs. Maintenance, Cold Start, 9 vehicles
Table 15, Baseline vs. Maintenance/Parametric Adjustments/
Device Hot Start, 15 vehicles
Table 16, Baseline vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 9 vehicles
Table 17, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Hot Start, 15 vehicles
Table 18, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 9 vehicles
Table 19, Baseline vs. No Maintenance/Parametric Adjustments/
Device, Hot Start, 9 vehicles
Table 20, Baseline vs. No Maintenance/Parametric Adjustments/
Device, Cold Start, 9 vehicles
Table 21, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device, Hot
Start, 9 vehicles
Table 22, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device, Cold
Start, 9 vehicles
3-5

-------
Test
Hot Start FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
N0X
(rapfO
BL
3.76
76.41
2.21
14.7
M
3.27
50.06
2.56
15.3
BL-M
0.49
26.35
-0.35
- 0.7
3L-M
13.0 %
34.5 %
-5.5 %
- 4.8%
Table 13.
Hot Start Data,
1973-1974 Model Years, 3aseline
vs.

Maintenance on
15 Vehicles,


Test
Cold Start FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
NOx
(mpg)
BL
4.78
91.60
2.63
12.0
M
3.92
59.55
2.90
12.7
BL-M
0.86
32.04
- 0.27
- 0,7
BL-M
13.0 %
35,0 %
-10.3 X
- 5.8%
Tabla 14.
Cold Start Data
5 1973-1974 Model
Years, Baseline vs,

Maintenance on
9 Vehicles


Test
Hot Start FTP Emissions
(jsr/mi)
Fuel
Condition
HC
CO
NOv
(nps)
BL
3.76
76.41
2.21
14.7
M/PA/D
3.74
40.24
3.30
16.7
BL-M/PA/D
0.02
36.17
- 1.09
- 2.0
BL-M/PA/D
.53%
47.3 %
-49.3 X
-13.6%
Table 15.
Hot Start Data,
1973-1974 Model Years, Baseline
VS.

Maintenance/Parametric Adjustments/Device on 15
Vehicles.
Test
Cold Start FTP Emissions
(p,r/mi)
Fuel
Condition
HC .
CO
N0X
(mpg)
BL
4.78
91.60
2.63
12.0
M/PA/D
4.42
49.06
3.71
13.9
BL-M/PA/D
0.36
42.53
- 1.07
- 1.9
BL-M/PA/D
7.5 %
46.4 %
-40.7 %
-15.8%
Table 16. Cold Start Data, 1973-1974 Model Years, Baseline vs.
Maintenance/Parametric Adjustments/Device on 9 Vehicles.
3-6

-------
Test
Hot Start
FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
NO*
(mpg)
M
3.27
50.06
2.56
15.3
M/PA/D
3.74
40.24
3.30
16.7
M-M/PA/D
- 0.47
9.82
- 0.74
- 1.3
M-M/PA/D
-14.4 %
19.6 %
-28.9 %
- 8.5%
Table 17.
Hot Start Data, 1973-1974 Model Years, Maintenance vs.

Maintenance/Parametric Adjustments/Device on
15 Vehicles.
Test
Cold Start FTP Emissions (fcr/mi)
Fuel
Condition
HC
CO
N0X
(np^)
M
3.92
59.55
2.90
12.7
M/PA/D
4.42
49.06
3.71
13.9
M-M/PA/D
- 0.50
10.49
- 0.80
- 1.2
M-M/PA/D
-12.8 %
17.6 Z
-27.6 %
- 9.4%
Table 18.
Cold Start Data, 1973-1974 Model
Years, Maintenance vs.

Maintenance/Parametric Adjustments/Device on
9 Vehicles.
Test
Hot Start
FTP Emissions
(fir/mi)
Fuel
Condition
HC
CO
N0X
(rapg)
BL
3.92
80.95
2.38
12.6
NM/PA/D
3.59
37.63
3.58
14.6
BL-NM/PA/D
0.33
43.32
- 1.19
- 2.0
BL-NM/PA/D
8.4 %
53.5 %
-50.0 %
-15.9%
Table 19. Hot Stare Data, 1973-1974 Model Years, Baseline vs. No
Maintenance/Parametric Adjustments/Device on 9 Vehicles.
Test
Cold Start
FTP Emissions
(Rr/mi)
Fuel
Condition
HC
CO
N0X
(np^)
BL
4.78
91.60
2.63
12.0
NM/PA/D
3.99
44.02
3.72
14.0
BL-NM/PA/D
0.79
47.57
- 1.09
- 2.0
BL-NM/PA/D
16.5 %
51.9 1
-41.4 %
-16.7%
Table 20. Cold Start Data, 1973-1974 Model Years, Baseline vs. No
Maintenance/Parametric Adjustments/Device on 9 Vehicles.
3-7

-------
Test

Hot Start
FTP Emissions
0»r/mi)
Fuel
Condition

HC
CO .
N0X
(mps)
NM/PA/D

3,59
37.63
3.58
14.6
M/PA/D

4.10
43.13
3.66
14.5
NM/PA/D-M/PA/D
- 0.51
- 5.50
-0.08
- 0.1
NM/PA/D-M/PA/D
-14.2 Z
-14.6 %
-2.2 Z
- 6.8%
Table 21.
Hot
Start Data, 1973-1974 Model Years, No
Maintenance/

Paranetric Adjustments/Device vs.
Main tenance/Parazne trie

Adjustments/Device
on 9 Vehicles.


Test

Cold Start
FTP Emissions
(®r/mi)
Fuel
Condition

HC
CO
NO*
(npg)
NM/PA/D

3.99
44.02
3.72
14.0
M/PA/D

4.42
49.06
3,71
13.9
NM/PA/D-M/PA/D
- 0.43
- 5.04
0.02
0.1
NM/PA/D-M/PA/D
-10,8 %
-11.4 %
.54%
.71%
Table 22» Cold Start Data, 1973-19 74 Model Years, No Maintenance/
Parametric Adjustments/Device vs. Maintenance/Parametric
Adjustments/Device on 9 Vehicles.
The 1975 model-year segment of the sample was comprised of twenty-
two vehicles. Each of these vehicles was tested at the Baseline
condition. Twenty were also tested at the Manufacturers Specification
(Tune-up) and Manufacturer's Specification/Parametric Adjustments/
Device Installation conditions. Both hot and cold start data are
available for the twenty vehicles.
Tables are provided to indicate results at various test conditions
and associated changes as follows:
Table 23, Baseline vs. Maintenance, Hot Start, 20 vehicles
Table 24, Baseline vs. Maintenance, Cold Start, 20 vehicles
Table 25, Baseline vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 20 vehicles
3-8

-------
Table 26, Baseline vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 20 vehicles
Table 27, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Hot Start, 20 vehicles
Table 28, Maintenance vs. Maintenance/Parametric Adjustments/
Device, Cold Start, 20 vehicles
Table 29, Baseline vs. No Maintenance/Parametric Adjustments/
Device, Hot Start, 20 vehicles
Table 30, Baseline vs. No Maintenance/Parametric Adjustments/
Device, Cold Start, 20 vehicles
Table 31, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device, Hot
Start, 20 vehicles
Table 32, No Maintenance/Parametric Adjustments/Device vs.
Maintenance/Parametric Adjustments/Device, Cold
Start, 20 vehicles
Test
Hot Start
FTP Emissions
(pr/mi)
Fuel
(Epg)
Condition
IIC
CO

EL
1.71
44.45
1.40
14.5
M
1.53
37.62
1.36
14.5
BL-M
0.18
6.83
0.05
0.0
BL-M
10.6 %
15.3 %
3.6 %
o.oz
Table 23. Hot Start Data, 1975 Model Year, Baseline vs. Maintenance
on 20 Vehicles.
Test
Cold Start FTP Emissions (gr/tai)
Fuel
Condition
HC
CO
NO*
(ffipg)
BL
2.04
49.66
1.48
13.9
M
1.95
43.69
1.42
13.9
BL-M
0.10
5.97
0.06
0.0
BL-M
4.9 %
12.0 %
4.1 %
0.02
Table 24. Cold Start Data, 1975 Model Tear, Baseline vs. Maintenance
on 20 Vehicles.
3-9

-------
Test
Hot Start FTP Emissions
(gr/rai)
Fuel
Condition
HC

CO
N Ox
(mpg)
BL
1.71

44.45
1.40
14.5
M/PA/D
1.06

19.36
2.13
15.8
BL-M/PA/D
0.65

25.09
0.73
- 1.4
BL-M/PA/D
33.0 %

56.4 Z
52.1 %
- 9.7%
Table 25.
Hot Start Data,
1975
Model Year,
Baseline vs.
Maintenance/

Parametric Adjustments/Device on
20 Vehicles.

Ta3t
Cold Start
FTP Sni33ions
(gr/mi)
Fuel
Condition
HC

CO
NO*
(mpg)
BL
2.04

49.66
1.48
13.9
M/PA/D
1.41

22.94
2.23
15.2
BL-M/PA/D
0.63

26.72
- 0.74
- 1.3
BIr M/PA/D
30.9 %

53.8 %
-50.0 Z
- 9.3%
Table 26.
Cold Start Data,
1975 Model Year,
Basaliaa vs
. Maintenance/

Parasetric Adjustaants/Device on
20 Vehicles.

Test
Hot Start FTP Emissions
(gr/mi)
Fuel
Condition
HC

CO
NO*
(mpg)
M
1.53

37.62
1.36
14.5
M/PA/D
1.06

19.36
2.13
15.8
M-M/PA/D
0.46

18.27
- 0.77
- 1.4
M-M/PA/D
30.1 %

48.6 %
-56.7 Z
- 9.7%
Table 27.
Hot Start Data,
1975
Model Year.
Maintenance
vs.

Maintenance/Parametric Adjustments/Device on
20 Vehicles.
Test
Cold Start
FTP Emissions
(gr/mi)
Fuel
Condition
HC

CO
NO*
(mpg)
M
1.95

43.69
1.42
13.9
M/PA/D
1.41

22.94
2.23
15.2
M-M/PA/D
0.54

20.75
- 0.81
- 1.3
M-M/PA/D
27.7 %

47.5 Z
-57.0 Z
- 9.4%
Table 28. Cold Start Data, 1975 Model Year, Maintenance vs.
Maintenance/Parametric Adjustments/Device on 20 Vehicles.
3-10

-------
Test
Hot Start FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
NO*
(mpg)
BL
1.68
47.02
1.36
13.4
M/PA/ND
1.49
32.26
1.70
14.1
BL-M/PA/ND
0.19
14.76
- 0.34
- 0.6
BL-M/PA/ND
11.3 Z
31.4 Z
-25.0 Z
- 4.5Z
Table 29. Hot Start Data, 1975 Model .Tear, Baseline vs. Maintenance/
Parametric Adjustments/No Device on 15 Vehicles.
Test	Cold Start FTP Emissions (fir/ml)	Fuel
Condition
HC
CO
NOx
Tmpg)
BL
2.03
52.77
1.44
12.9
M/PA/ND
1.90
38.13
1.79
13.5
BL-M/PA/ND
0.13
14.64
- 0.35
- 0.6
BL-M/PA/ND
6.4 Z
27.7 1
-24.3 Z
- 4.7Z
Table 30. Cold Start Data, 1975 Model Year, Baseline vs. Maintenance/
Parametric Adjustments/No Device on 15 Vehicles.
Test
Hot Start
FTP Emissions (sr/r.i)
Fuel
Condition
HC
CO
NOx
(mpg)
M/PA/ND
1.49
32.26
1.70
14.1
M/PA/D
0.97
20.75
1.94
14.7
M/PA/ND-M/PA/D
0.52
11.51
- 0.23
- 0.6
M/PA/ND-M/PA/D
34.9 %
35.7 Z
-13.5 %
- 4.32
Table 31. Hot Start Data, 1975 Model Year, Maintenance/Parametric
Adjustments/No Device vs. Maintenance/Parametric
Adjustments/Device on 15 Vehicles.
Test
Cold Start FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
MOx

M/PA/ND
1.90
38.13
1.79
13.5
M/PA/D
1.31
24.41
2.04
14.1
M/PA/ND-M/PA/D
0.59
13.72
- 0.26
- 0.6
M/PA/ND-M/PA/D
31.1 Z
36.0 %
-14.5 %
- 4.4%
Table 32. Cold Start Data, 1975 Model Year, Maintenance/Parametric
Adjustments/No Device vs. Maintenance/Parametric
Adjustments/Device on 15 Vehicles.
3-11

-------
In Tables 33, 34 and 35, we show the summarized hot start results
for each vehicle class for the baseline and full device installed
condition and a comparison of the two. Data associated with the
Parametric Adjustnent/Device test point reflect both maintained and
unsiaintained device installed test conditions. Also shown in these
tables are the 90 percent confidence intervals associated with the
emission and fuel economy changes.
Test
Hot Start
FT? Emissions
(gr/rai)
Fuel
Condition
HC
CO
NOx
(ap?0
BL
5.82
89.99
2.44
14.94
PA/D
4,70
36.39
2.49
16.49
BL-PA/D
1,12
53,59
- 0,04
- 1.55
BL-PA/D(CI)
+ 0.88
+12.94
+ 0,34
+ 0.64
BL-PA/D
13,4 %
57.3 %
- 8.3 %
-11.1 %
BL-PA/D(CI)
+10.1 %
+ 8.0 %
+16.5 %
+ 4.7%





Table 33. Hot Start Data, 1968-1972 Model Years, Baseline
as Parametric Adjustment/Device on 18 Vehicles
and 90 Percent Confidence Intervals (CI).
Test
Hot Start
FTP Emissions
(gr/rai)
Fuel
Condition
HC
CO
NOx
(mpg)
BL
3.80
75.43
2.13
14.36
PA/D
3.62
38.28
3.21
16.29
BL-PA/D
0.18
37.15
- 1.07
- 1.93
BL-PA/D(CI)
+ 0.43
+ 8.18
+ 0.25
+ 0.40
BL-PA/D
3.2 Z
48.1 %
-61.6 %
-14.9 %
BL-PA/D(CI)
+10.1 Z
+ 8.2%
+18.5 Z
+ 3.8 %





Table 34. Hot Start Data, 1973-1974 Model Years, Baseline
vs. Parametric Adjustments/Device on 20 Vehicles
and 90 Percent Confidence Intervals (CI).
3-12

-------
Test
Hot Start
FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
NOx
Ups)
BL
1.77
68.65
1.47
14.55
PA/D
1.13
30.95
2.25
15.89
BL-PA/D
0.64
37.70
- 0.77
- 1.34
BL-PA/D(CI)
+ 0.23
+ 5.92
+ 0.32
+ 0.46
BL-PA/D
28.7 Z
51.9 %
-71.3 Z
- 9.5 Z
BL-PA/D(CI)
+16.8 2
+ 4.5 %
+33.2 Z
+ 3.1 Z





Table 35. Hot Start Data, 1975 Model Year, Baseline vs.
Parametric Adjustments/Device on 22 Vehicles
and 90 Percent Confidence Interval (CI).
In Tables 36, 37 end 38, we show summarized cold start results
(where cold start tests were conducted) for each vehicle class for the
baseline and full device installed condition and a comparison of the
two. Again, data associated with the Parametric Adjustment/Device
Test point reflect both maintained and unmaintained device Installed
test conditions* Also shown in these tables sre the 90 percent
confidence intervals associated with the emission and fuel economy
changes.
Test
Cold Start
FTP Emissions
(Kr/mi)
Fuel
Condition
HC
CO
NO*
(epr)
BL
7.93
110.21
2.76
12.97
PA/D
6.51
53.07
2.63
14.75
BL-PA/D
1.41
57.13
0.12
- 1.79
BL-PA/D(CI)
+ 1.56
+ 19.31
+ 0.50
+ 0.84
BL-PA/D
11.7 2
49.6 %
0.6 %
-13.9 %
BL-PA/D(CI)
+15.2 %
+ 13.0 X
+20.4 %
+ 6.7 %





Table 36. Cold Start Data, 1968-1972 Model Years, Baseline
vs. Parametric Adjustments/Device on 11 Vehicles
and 90 Percent Confidence Intervals.
3-13

-------
Test
Cold Start
FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
N0X
(npR)
BL
4.94
92.00
2.63
11.91
PA/D
4.41
47.01
3.68
14.02
BL-PA/D
0.53
45.00
- 1.06
- 2.11
BL-?A/D(CI)
+ 0.35
+16.32
+ 0.54
+ 0.67
BL-PA/D
9.3 %
46.9 %
-61.7 %
-19.8 %
BL-PA/D(CI)
+15.1 %
+13.3 %
+39.9 Z
+ 7.5 %





Table 37. Cold Start Data, 1973-1974 Model Years, Baseline
vs. Parametric Adjustments/Device on 10 Vehicles
and 90 Percent Confidence Intervals.
Test
Cold Start
FTP Emissions
(gr/mi)
Fuel
Condition
HC
CO
NQx
(rros)
BL
2.09
49.92
1.56
14.05
Pa/D
1.48
23.55
2.34
15,29
3L-PA/D
0.60
26,37
- 0,78
- 1.24
BL-PA/D(CI)
+ 0.24
+ 5.17
+ 0.31
+ 0,46
BL-PA/D
25.6 %
49.6 %
-68.1 %
- 9.1 %
BL-PA/D(CI)
+12.7 %
+ 8.0 %
+31.0 %
+ 3.3 Z.





Table 38. Cold Start Data, 1975 Model Year, Baseline vs.
Parametric Adjustments/Device on 22 Vehicles
and 90 Percent Confidence Intervals (CI).
3-14

-------
APPENDICES
Appendix A
Appendix B
Appendix C
Appendix D
Appendix E
Appendix F
Appendix G
Appendix H
Appendix 1
Appendix J
Listing of Vehicle Identification Information
Listing of Federal Test Procedures Results
on Individual Vehicles
Exhaust Emissions for 1968-1972 Vehicles,
Hot Start Data
Exhaust Emissions for 1968-1972 Vehicles,
Cold Start Data
Exhaust Emissions for 1973-1974 Vehicles,
Hot Start Data
Exhaust Emissions for 1973-1974 Vehicles,
Cold Start Data
Exhaust Emissions for 1975 Vehicles,
Hot Start Data
Exhaust Emissions for 1975 Vehicles,
Cold Start Data
Exhaust Emissions and Statistical Summary
of Baseline - Installation of Device
Hot Start Data
Exhaust Emissions and Statisical Summary
of Baseline - Installation of Device
Cold Start Data

-------
LEGEND
TABLE DESIG.
EXPLANATION
BASELINE
EXHAUST EMISSIONS IN AS
RECEIVED CONDITION
MANU. TUNE-UP
EXHAUST EMISSIONS AFTER TUNE-U?
PER MANUFACTURER'S SPECIFICATIONS
PARAMETRIC ADJ.*
EXHAUST EMISSIONS AFTER SPECIAL
PARAMETRIC ADJUSTMENTS FOR
HIGH ALTITUDE
DEVICE
TUNE-UP/PARA ADJ
TUNE-UP/DEVICE
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
EXHAUST EMISSIONS WITH INSTALLATION
OR RETROFIT DEVICE ONLY
EXHAUST EMISSIONS AFTER TUNE-UP
PER MANUFACTURER'S SPECIFICATIONS
AND SPECIAL PARAMETRIC ADJUSTMENTS
FOR HIGH ALTITUDE
EXHAUST EMISSIONS AFTER TUNE-UP
PER MANUFACTURER'S SPECIFICATIONS
AND INSTALLATION OF RETROFIT
DEVICE
EXHAUST EMISSIONS AFTER SPECIAL
PARAMETRIC ADJUSTMENTS FOR HIGH
ALTITUDE AND INSTALLATION OF RETRO-
FIT DEVICE
EXHAUST EMISSIONS AFTER TUNE-UP
PER MANUFACTURER'S SPECIFICATIONS,
SPECIAL PARAMETRIC ADJUSTMENTS FOR
HIGH ALTITUDE AND INSTALLATION
OF RETROFIT DEVICE.
INSTALLATION OF DEVICE
TUNEUP/PARADJ/DEV TEST OR IF THAT
WAS NOT PERFORMED THE PARA ADJ/
DEVICE TEST WAS USED
WHERE THE TABLE DESIGNATION INDICATES TWO DESIGNATIONS (i.e.
BASELINE - MANU. TUNE-UP, BASELINE - TUNE-UP/PARADJ/DEV etc.)
DATA IS CONTAINED ON THREE PAGES:
1st PAGE: EXHAUST EMISSIONS FOR VEHICLES BASED ON
2nd LISTED DESIGNATION
2nd PAGE: EXHAUST EMISSION REDUCTION OF 2nd
DESIGNATION vs. 1st DESIGNATION
3rd PAGE: PERCENT REDUCTION OF EMISSIONS OF 2nd
DESIGNATION vs. 1st DESIGNATION.
*PARAMETRIC ADJUSTMENTS WERE AS FOLLOWS:
PHASE I: TIMING - MANUFACTURER'S SPECIFICATION PLUS
7 1/2 DEGREES; IDLE CO SET AT LEAN BEST IDLE.
PHASE II: TIMING - MANUFACTURER'S SPECIFICATION PLUS
5 DEGREES; IDLE CO SET AT LEAN BEST IDLE; CHOKE THREE
LEAN OF SPECIFIED SETTING.

-------
APPENDIX A
LISTING OF VEHICLE IDENTIFICATION INFORMATION




VEH
VEH

AIR
INT.

TST
'EH. #
YEAR
MAKE
CID
TYP
OWN
CNV
PMP
WT.
CHOKE
PHAS
0016
19 70-
AMMO
232
AUT
GS A
NO
NO
3500
ADJ
I
0017
1970
AMMO
232
AUT
GSA
NO
NO
3500
ADJ
I
0020
1970
FORD
302
AUT
PVT
NO
NO
3500
ADJ
II
0026
1970
AMMO
304
AUT
PVT
NO
NO
3000
ADJ
I
0028
1970
FORD
200
AUT
PVT
NO
NO
2750
ADJ
I
0039
1970
AMMO
304
AUT
PVT
NO
NO
3500
ADJ
11
0043
1970
CHEV
350
AUT
PVT
NO
YES
3500
N. ADJ
II
0045
1970
CHEV
230
AUT
PVT
NO
YES
3000
N. ADJ
II
1021
1971
PLYM
360
AUT
PVT
NO
NO
4000
ADJ
I
1044
1971
PLYM
360
AUT
PVT
NO
NO
4000
ADJ
II
1 046
1971
FORD
400
AUT
GSA
NO
NO
4000
ADJ
II
204 1
1972
CHEV
140
AUT
PVT
NO
YES
2500
N . ADJ
II
3005
1973
PLYM
360
AUT
GSA
NO
NO
4500
N . ADJ
I
3006
1973
AMMO
360
AUT
" GSA
NO
YES
4000
ADJ
I
3009
1973
AMMO
360
AUT
GSA
NO
YES
4 500
ADJ
I
3010
1973
l-LYM
3 60
AUT
GSA
NO
NO
4000
N . ADJ
I
3025
1973
PLYM
360
AUT
GSA
NO
NO
4000
N . ADJ
I
3029
1973
DODG
360
TRK
GSA
NO
NO
4000
N . AD J
II
3030
1973
DODG
360
TRK
GSA
NO
NO
4000
N . ADJ
II
3031
1973
DODG
318
TRK
GSA
NO
NO
4000
N . ADJ
II
3032
1 973
DODG
360
TRK
GSA
NO
YES
4000
N . ADJ
II
3037
1973
DODG
360
AUT
PVT
NO
YES
4000
N . ADJ
II
3040
1973
PLYM
225
AUT
GSA
NO
YES
3000
N . ADJ
II
3048
1973
DATS
108
AUT
PVT
NO
NO
2750
ADJ
II
3049
1973
AMMO
360
AUT
GSA
NO
YES
4000
ADJ
II
3054
1973
PLYM
318
AUT
PVT
NO
NO
3500
N . ADJ
11
4007
1974
PLYM
225
AUT
GSA
NO
NO
3500
N . ADJ
I
4008
1974
P LY M
22 5
AUT
GSA
NO
NO
3500
N . ADJ
I
4022
1974
HOND
091
AUT
PVT
NO
NO
2000
N . ADJ
I
4023
1974
FOP.D
140
AUT
PVT
NO
YES
3000
ADJ
I
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
A-1

-------
II •
402 7
4038
5002
5003
5004
5011
5012
5013
50 24
5034
5035
5036
5047
5052
5053
5055
5056
5057
5058
5059
5060
5061
5062
5063
8018
8051
9019
9033
9042
9050
APPENDIX A
(CONTD.)
LISTING OF VEHICLE IDENTIFICATION INFORMATION
VEH VEH	AIR INT.	TST
YEAR MAKE CID TYP OWN CNV PMP WT. CHOKE PHASE
19 74
OPEL
1 16
AUT
PVT
NO
NO
2 500
ADJ
1974
PLYM
3 18
AUT
PVT
NO
NO
3 500
N . ADJ
1975
DODG
225
TRK
G S A
NO
NO
4000
N . AD J
1975
CHEV
250
TRK
GS A
YES
NO
4000
N . ADJ
1975
CHEV
250
TRK
G S A
YES
NO
4000
N . ADJ
19 75
DATS
085
AUT
PVT
NO
YES
3000
ADJ
19 75
AMMO
253
AUT
PVT
NO
NO
3500
ADJ
1975
CHEV
350
TRK
PVT
YES
YES
4000
N . ADJ
1975
BUIC
231
AUT
PVT
YES
NO
3000
ADJ
19 75
CHEV
140
AUT
PVT
YES
YES
2 75 0
ADJ
1975
CHEV
350
AUT
?VT
YES
NO
4 00 0
ADJ
1975
DATS
085
AUT
PVT
NO
YES
3000
ADJ
1975
CHl-V
4 00
AUT
PVT
YES
YES
4500
ADJ
1975
BUIC
350
AUT
PVT
YES
NO
4500
ADJ
1975
FORD
302
AUT
PVT
YES
YES
3500
N . ADJ
1975
CHRY
318
AUT
PVT
YES
YES
4000
N . ADJ
1975
BUIC
350
AUT
PVT
YES
NO
4000
ADJ
1975
CHEV
350
AUT
PVT
YES
NO
4000
ADJ
1975
CHEV
350
AUT
PVT
YES
NO
4500
ADJ
1975
OLDS
455
AUT
PVT
YES
NO
5000
ADJ
1975
CHEV
350
AUT
PVT
YES
NO
4000
ADJ
1975
OLDS
260
AUT
PVT
YES
NO
4000
ADJ
19 75
OLDS
350
AUT
PVT
YES
NO
4500
ADJ
1975
OLDS
350
AUT
PVT
YES
NO
4000
ADJ
1968
AMMO
232
AUT
GS A
NO
NO
3500
ADJ
1968
OLDS
455
AUT
PVT
NO
NO
4500
N . ADJ
1969	FORD	250	AUT	GSA	NO	NO	3500	ADJ
1969	CHEV	307	AUT	PVT	NO	YES	3500	N.ADJ
1969	PLYM	318	AUT	PVT.	NO	NO	4000	N.ADJ
1969	FORD	302	AUT	PVT	NO	NO	4000	ADJ
AUTOMOTIVE TESTING LAB0RATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
A-2

-------
APPENDIX B
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
	HOT 74 COMPOSITE	-COLD 1975 COMPOSITE	
VEH.	VEH VEH	GRAMS PER MILE		GRAMS PER MILE	
NO. MAKE TYP CWH HC CO C02 NOX MPG HC CO CO2 NOX MPG
0016	AMMO AUT GSA
BASELINE	4.26	65.05	389.2	2.91	17.58
MANU. TUNE-UP	3.49	29.28	428.6	3.58	18.27 3.79 34.95 441.6 3.60 17.45
TUNEUP/PARADJ/DEV	3.86	36.34	418.3	3.06	18.20 4.04 39.04 431.1 3.17 17.57
0017	AMMO AUT GSA
BASELINE	3.62	54.35	355.0	2.42	19.64
MANU. TUNE-UP	3.42	40.25	414.8	3.40 18.15 3.86 47.20 426.5 3.38 17.31
TUNEUP/PARADJ/DEV	3.69	16.54	424.2	2.48	19.21 3.90 19.50 437.2 2.55 18.48
0020 FORD AUT PVT
BASELINE	11.10	94.35	510.8	3.77	12.78 10.82 97.08 525.7 3.93 12.46
MANU. TUNE-UP	4.87	27.06	547.5	4.22	14.66 5.08 30.34 561.4 4.26 14.20
PARA ADJ/DEVICE	9.84	26.47	511.2	3.54	15.20 10.34 28.39 528.6 3.69 14.65
TUNEUP/PARADJ/DEV	4.84	18.05	456.9	2.86	17.73 5.03 19.58 471.5 2.90 17.13
0026 AMMO AUT PVT
BASELINE	3.00	59.67	435.0	1.38	16.49
MANU. TUNE-UP	2.62	35.73	485.4	1.38	16.14 3.72 60.95 487.3 1.23 14.92
TUNEUP/PARADJ/DEV	2.83	24.46	462.1	1.51	17.42 3.98 53.87 459.2 1.29 15.95
0028 FORD AUT PVT
BASELINE	3.13	49.46	419.5	2.27	17.50
MANU. TUNE-UP	2.96	15.31	336.1	4.21	21.15 3.15 21.07 398.4 4.23 20.10
TUNEUP/PARADJ/DEV	3.09	13.70	392,0	2.83	20.96 3.22 17.51 402.8 2.87 20.15
0039 m-'D AUT PVT
BASELINE	6.86	117.90	549.0	1.58	11.74 11.46 153.54 576.0 1.53 10.40
MANU. TUNE-UP	6.50	122.82	529.2	1.59	11.95 12.59 156.17 551.4 J.52 10.61
PARA ADJ/DEVICE	7.05	64.30	489.9	2.03	14.47 7.81 80.72 507.4 1.97 13.47
TUNEUP/PARADJ/DEV	5.06	75.18	562.4	1.92	12.74 10.33 108.74 5S4.9 1.85 11.25
0043 CHEV AUT PVT
BASELINE	5.70	66.74	466.0	3.08 15.07 7.00 95.04 469.5 2.72 13.85
MANU. TUNE-UP	4.08	35.61	453.1	2.75	17.00 4.85 60.16 458.3 2.52 15.62
PARA ADJ/DEVICE	8.10	13.85	481.5	2.36 16.78 8.63 33.48 493.7 2.20 15.47
TUNEUP/PARADJ/DEV	5.77	16.14	452.3	2.05	17.90 6.24 31.38 461.6 1.91 16.72
0045 CHEV AUT PVT
BASELINE	7.38	89.75	335.6	2.01	17.75 7.94 101.14 344.6 1.87 16.79
MANU. TUNE-UP	3.33	37.21	371.0	1.90 20.17 4.03 43.92 381.0 1.86 19.18
PARA ADJ/DEVICE	7.53	60.22	400.6	1.04 17.10 7.31 65.23 411.9 0.99 16.51
TUNEUP/PARADJ/DEV	9.67	46.09	325.8	0.96 20.69 9.63 49.33 338.4 0:96 19.88
1021 PLYM AUT PVT
BASELINE	6.86	129.56	£94.9	1.45 12.32
MANU. TUNE-UP	3.75	55.50	585.1	2.86	12.97 3.97 57.38 607.8 2.91 12.49
TUNEUP/PARADJ/DEV	3.58	29.44	596.0	2.29	13.58 3.85 30.58 617.1 2.34 13.10
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-l

-------
APPENDIX 3
(CONTD.)
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
	HOT 74 COMPOSITE	
VEH.	VEH VEH	GRAMS PER MILE	
NO. MAKE TYP OWN HC CO C02 NOX MPG
	COLD 1975 COMPOSITE-
	GRAMS PER MILE	
HC CO C02 NOX
MPG
1044 PLYM AUT PVT
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
1046 FORD AUT GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
2041 CHEV AUT PVT
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3005	PLYM AUT GSA
iJASELINa.
PARAMETRIC ADJ.
PARA ADJ/DEVICE
3006	AMMO AUT GSA
BASELINE
MANU. TUNE-UP
TUNEUP/PARADJ/DEV
3009	AMMO AUT GSA
BASELINE
PARAMETRIC ADJ.
PARA ADJ/DEVICE
3010	PLYM ALT GSA
BASELINE
MANU. TUNE-UP
TUNEUP/PARADJ/DEV
3025 PLYM AUT GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
3029 DODG TRK GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
6.26 127.04
5.06 79.23
4.89
2.70
3.93
4.29
4.83
4.29
2.SO
1.63
4.36
2.73
3.92
2.69
2.63
4.92
3.94
4.32
4.58
4.70
4.31
2.49
2.07
2.66
1.70
1.54
2.28
3.62
2.74
4.35
3.73
54.28
9.39
50.19
48.94
41.75
30.88
41.48
33.55
42.65
29.99
88.12
41.81
39.46
67.08
37.85
22.54
72.11
28.57
21.47
44.03
21.61
17.78
49.50
32.23
36.21
70.39
30.38
34.49
19.11
541.1
584.1
599.4
536.8
689.4
708.4
724.5
689.8
385.2
469.9
406.3
384.3
617.3
628.9
631.0
590.5
587.8
581.2
587.7
589.9
610.5
677.1
629.8
597.5
642.4
696.9
591.9
712.3
694.6
581.9
646.3
2.83 11.67
3.19 12.25
2.44 12.68
1.36 15.85
3.80 11.37
3.60 11.11
3.11 11.02
3.53 11.80
2.65 19.32
1.90 16.82
3.45 18.22
2.94 20.16
1.74 11.55
2.30 12.62
2.60 12.65
3.41 12.47
3.47 13.45
4.36 14.08
1.66 12.40
2.17 13.66
2.54 13.49
3.56 11.77
3.18 13.24
4.00 14.00
2.25 12.23
2.80 11.80
4.09 13.53
3.09 10.64
3.71 11.82
3.18 13.66
4.82 12.90
6.74 129.64
5.64 94.56
5.22
3.28
4.03
4.65
4.96
4.46
3.22
2.22
4.33
3.34
57.62
14.39
57.43
67.29
46.72
36.68
51.96
45.11
47.22
39.77
3.06 47.66
2.89 41.65
4.36 48.93
4.84 36.71
563.1
590.2
620.9
556.2
718.1
733.8
758.9
720.6
405.2
491.2
420.1
400.1
650.2
651.2
599.2
593.2
2.91	11.26
3.21	11.73
2.51	12.19
1.41	15.06
3.64 10.81
3.49 10.39
3.10 10.47
3.51 11.20
2.73 17.85
1.89 15.60
3.49 17.46
2.98 18.76
2.2? 12.03
2.59 12.23
3.15 12.86
3.81 13.32
4.87 32.28 601.7 2.11 13.29
4.38 25.12 627.1 2.46 13.04
2.57 24.09 643.4 3.11 12.87
2.99 18.37 611.6 3.80 13.66
1.90
2.71
5.19
3.33
4.08
4.21
35.90
37.22
74.46
39.30
38.37
25.45
722.5
610.5
745.6
725.8
601.0
674.5
2.84 11.31
4.20 13.10
3.25 10.10
3.69 11.12
4.01 13.16
4.83 12.19
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-2

-------
APPENDIX B
(CONTD.)
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
-HOT 74 COMPOSITE	
VEH. VEH VEH	GRAMS PER MILE	
NO. MAKE TCP CWN HC CO C02 NOX MPG
-COLD 1975 COMPOSITE	
	GRAMS PER MILE	
HC CO C02 NOX MPG
3030	DODG TRK GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3031	DODG TRK GSA
BASELINE
TUNE-UP/DEVICE
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3032	DODG TRK GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3037 DODG AUT PVT
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3040 PLYM AUT CSA
BASELINE
HANU. TUKE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3048	DATS AtJT PVT
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3049	AMMO AUT GSA
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
3054 PLYM AUT PVT
BASELINE
MANU. TUNE-UP
PARA ADJ/DEVICE
TUNEUP/PARADJ/DEV
4007 PLYM AUT GSA
BASELINE
MANU. TUNE-UP
TUNEUP/PARADJ/DEV
5.46 116.12
2.56	41.03
2.79 27.79
3.57	34.67
5.84
4.44
4.59
4.02
3.64
3.33
4.27
5.16
1.83
1.76
2.12
1.55
3.64
3.41
2.09
3.35
4.72
5.38
4.19
4.85
90.84
46.68
25.51
24.78
80.09
37.15
29.81
43.00
56.92
40.42
39.64
29.17
73.65
65.83
55.62
57.16
62.29
70.84
41.63
45.08
4.91
3,60
4.03
3.61
3.25
3.12
3.48
3.21
2.82
708.5
656.1
692.5
636.3
595.6
647.0
655.4
513.8
3.69 115.81
3.11 42.58
33.34
46.38
77.10
52.66
26.84
29.37
71.19
49.89
31.20
1.33 9.77
2.78	12.18
2.79	11.91
4.20 12.64
2.57 11.73
2.39 12.08
4.03 12.50
3.57 15.69
755.4 /3.24
821.7 3.92
667.2
577.0
9.94
9.97
5.21 12.20
4.65 13.43
653.4
679.8
630.3
641.4

-------
APPENDIX B
(CONTD.)
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
	HOT 74 COMPOSITE—
VEH.	VEH VEH	GRAMS PER MILE	
NO. MAKE TYP OWN HC CO C02 NOX
MPG
:OLD 1975 COMPOSITE-
	GRAMS PER MILE	
HC CO C02 NOX
MPG
4008 PLYM MJT GSA
BASELINE	3.52	61.94	364.1	1.30 18.78
PARAMETRIC ADJ.	3.37	44.92	355.8	1.30 20.31 3.56
PARA ADJ/DEVICE	3.03	40.09	361.3	1.80 20.45 3.11
4022 HOND AUT PVT
BASELINE	2.73	70.87	218.2	0.49 26.23
MANU. TUNE-UP	2.72	60.88	210.1	0.54 28.23 3.78
TUNEUP/PARADJ/DEV	2.46	39.01	223.4	1.02 30.34 3.43
4C23 FORD AUT PVT
BASELINE	3.40	97.95	346.4	0.74 17.36
MANU. TUNE-UP	2.06	78.00	395.5	0.57 16.92 2.42
TUNEUP/PARADJ/DEV	2.75	67.95	363.9	1/29 18.51 3.12
4027 OPEL AUT PVT
BASELINE	it.09	66.53	320.0	1.90 20.23
MANU. TUNE-UP	4.53	63.79	333.3	1.93 19.79 4.83
TUHEUP/PARrfJJ/DEV	4.23	36.93	340.3	3.11 21.54 4.47
&C38 "°LYM AUT ?7T
BASELINE	4.65	76.14	557.1	2.04 12.83 5.39
MANU. TUNE-UP	4.63	58.00	548.5	1.52 13.56 4.90
PARA ADJ/DEVICE	4.36	49.50	497.7	2.64 15.06 4.69
TUNEUP/PARADJ/DEV	7.95	84.21	475.9	2.36 14.01 8.12
5002	DODG TRK GSA
BASELINE	3.41	70.26	447.6	3.44 15.60 3.30
PARAMETRIC ADJ.	3.29	43.20	454.7	5.24 16.65 3.85
PARA ADJ/DEVICE	3.07	37.73	453.6	3.88 16.98 3.52
5003	CHEV TRK GSA
BASELINE	2.35	42.76	553.6	1.61 14.13 3.03
MANU. TUNE-UP	1.54	20.19	527.2	2.13 15.74 2.56
TUNEUP/PARADJ/DEV	1.17	12.11	479.7	4.18 17.67 1.74
5004	CHEV TRK GSA
BASELINE	1.41	31.46	530.9	0.92 15.18 1.76
PARAMETRIC ADJ.	2.99	12.25	551.6	2.38 15.29 3.69
PARA ADJ/DEVICE	0.57	11.46	532.0	2.9116.08 0.92
5011	DATS AUT PVT
BASELINE	0.60	8.50	352.2	1.40 24.15 0.67
MANU. TUNE-UP	0.48	6.40	341.9	1.45 25.11 0.60
TUNEUP/PARADJ/DEV	0.52	3.35	326.7	2.00 26.61 0.71
5012	AMMO AUT PVT
BASELINE	2.23	70.26	402.7	1.82 17.06 2.25
MANU. TUNE-UP	1.99	53.88	397.3	1.28 18.18 2.13
TUNEUP/PARADJ/DEV	1.32	9.26	442.7	3.75 19.23 1.36
44.74 366.1 1.44 15.32
40.92 371.4 1.87 19.92
68.58 216.0 0.57 26.43
46.57 228.2 1.06 28.43
88.77 406.1 0.58 16.04
74.65 373.9 1.31 17.71
65.69 343.1 2.03 19.22
33.47 351.1 3.25 20.85
89.26
65.23
52.33
87.24
574.4
566.4
518.0
495.9
2.02 12.13
1.54 12.97
2.78 14.43
2.40 13.47
70.15 452.8 3.54 15.43
52.73 470.3 5.21 15.70
45.44 474.4 3.90 15.94
51.64 557.9 1.61 13.68
29.50 528.7 2.14 15.22
17.20 433.8 4.13 17.19
34.81 537.7 1.00 14.84
16.74 556.3 2.43 14.93
13.95 539.4 3.02 15.73
10.75 356.7 1.42 23.63
8.65 348.3 1.46 24.40
5.14 334.6 2.04 25.73
68.40 417.9 2.01 16.67
60.40 413.7 1.35 17.22
10.52 457.3 3.82 18.56
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-4

-------
APPENDIX B
(CONTD.)
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
VEH.	VEH VEH
NO. MAKE TYP OWN
-HOT 74 COMPOSITE-
——GRAMS PER MILE	
HC CO C02 NOX MPG
	COLD 1975 COMPOSITE-
	GRAMS PER MILE	
HC CO C02 NOX
MPG
5013 CHEV TRK PVT
BASELINE	1.28	10.35	639.2	1.75	13.46	1.50	13.47	647.9	1.83	13.17
MANU. TUNE-UP	1.11	12.59	646.3	1.32	13.26	1.33	15.60	659.1	1.40	12.90
TUNEUP/PARADJ/DEV	1.26	9.87	609.1	1.94	14.12	1.55	11.65	624.6	2.02	13.70
5024 BUIC AUT PVT
BASELINE	2.54	51.78	384.0	1.08	18.75	2.94	57.43	389.9	1.22	18.13
MANU. TUNE-UP	2.78	54.96	367.3	1.08	19.19	3.15	58.52	371.0	1.24	18.77
TUNEUP/PARADJ/DEV	2.42	41.37	399.6	1.67	18.79	3.14	48.06	406.6	1.89	18.04
5034	CHEV AUT PVT
BASELINE	0.53	12.07	524.6	0.63	16.28	1.00	17.04	539.8	0.68	15.58
MANU. TUNE-UP	1.41	16.63	519.6	0.65	16.13	1.91	22.13	525.2	0.69	15.68
TUNE-UP/PARA ADJ	1.41	12.53	426.6	0.91	19.69	1.77	17.27	439.0	0.98	18.81
TUNEUP/PARADJ/DEV	1.30	8.28	399.1	1.64	21.33	1.82	12.58	408.2	1.64	20.46
5035	CHEV AUT PVT
BASELINE	0.76	27.62	601.7	1.53	13.71	1.29	41.25	622.8	1.60	12.83
MANU. TUNE-UP	0.80	28.93	615.4	1.38	13.38	1.39	42.05	635.4	1.46	12.57
TUNE-UP/PARA ADJ	1.34	26.25	590.9	2.39	13.95	2.05	41.23	609.0	2.38	13.05
TUNEUP/PARADJ/DEV	0.69	17.19	559.1	2.08	15.09	1.01	20.81	580.6	2.24	14.40
5036	DATS AUT PVT
BASELINE	1.44	35.99	330.2	1.81	22.68	1.71	42.31	339.1	1.81	21.59
MANU. TUNL-UP	1.79	53.57	340.4	1.47	20.63	2.05	58-33	348.0	1.48	19.89
TUNE-UP/PARA ADJ	2.04	58.00	346.4	1.23	J9.99	2.20	63.77	355.4	1.21	19.19
TUNEUP/PARADJ/DEV	1.04	21.34	348.	1.S6	23.04	1.22	25.69	356.0	1.93	22.17
5047 CHEV AUT PVT
BASELINE	1.09	4.39	750.6	2.41	11.66	1.49	13.56	772.9	2.44	11.11
MANU. TUHE-UP	1.75	4.00	724.9	1.97	12.05	1.80	6.47	747.0	2.03	11.63
TUNE-UP/PARA ADJ	1.41	4.79	742.6	2.70	11.76	1.61	11.53	766.9	2.78	11.23
TUNEUP/PARADJ/DEV	0.29	1.99	725.8	2.23	12.16	0.51	4.31	756.5	2.30	11.60
5052	BUIC AUT PVT
BASELINE	1.80	121.87	673.6	0.81	10.19	2.09	129.59	691.3	0.90	9.84
MANU. TUNE-UP	1.23	48.52	724.8	0.91	11.03	1.42	52.52	739.9	1.03	10.73
TUNE-UP/PARA ADJ	1.25	42.01	697.9	1.04	11.56	1.46	44.29	713.5	1.18	11.27
TUNEUP/PARADJ/DEV	0.94	28.92	702.7	1.57	11.82	1.13	32.42	720.9	1.68	11.45
5053	FORD AUT PVT
BASELINE	0.80	7.46	68).5	0.83	12.76	1.00	11.83	702.0	0.85	12.26
MANU. TUNE-UP	0.84	7.31	631.1	2.34	12.77	1.33	16.81	694.7	2.21	12.24
TUNE-UP/PARA ADJ	0.81	4.15	630.6	3.07	13.87	1.09	10.15	645.2	2.94	13.35
TUNEUP/PARADJ/DEV	0.79	3.39	596.1	3.9S	14.70	0.98	6.27	617.8	3.90	14.07
5055 CHRY AUT PVT
BASELINE	2.04	31.86	644.9-	3.04	12.65	2.68	40.41	659.7	3.03	12.13
MANU. TUNE-UP	1.49	31.46	769.1	2.67	10.78	3.76	48.03	790.8	2.66	10.11
TUNE-UP/PARA ADJ	2.07	27.58	706.8	3.54	11.73	3.11	38.58	727.6	3.49 11.12
TUNELT/PARADJ/D EV	1.69	24.69	583.4	2.82	14.14	2.27	32.30	600.2	2.76	13.49
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-5

-------
APPENDIX B
(CONTD.)
VEH.	VEH VEH
NO. MAKE TY? CWN
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
	HOT 74 COMPOSITE	COLD 1975 COMPOSITE	
	GRAMS PER MILE			GRAMS PER MILE	
HC CO C02 NOX MPG KC CO C02 NOX MFG
5056	BUIC AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PASA. ADJ
TU NEUP/PARADJ/DEV
5057	CHEV AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUP/PARADJ/DEV
5053 CHEV AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUF/PARADJ/DEV
5059	OLDS AUT PVT
EASELIKE
MANU. TUME-UP
TUNE-UP/PASA ADJ
TUNEUP/PARADJ/DEV
5060	CHEV AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUP/PARADJ/DEV
5061	OLDS AUT PVT.
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUP/PARADJ/DEV
5062	OLDS AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUP/PARADJ/DEV
5063	OLDS AUT PVT
BASELINE
MANU. TUNE-UP
TUNE-UP/PARA ADJ
TUNEUP/PARADJ/DEV
8018 AMMO AUT GSA
BASELINE
MANU. TUNE-UP
TUNEUP/PARADJ/DEV
1.93
1.77
2.04
0.62
1.46
1.36
1.63
0.75
2.44
1.59
1.90
1.69
1.29
1.23
0.88
0.83
2.46
2.13
1.03
0.59
2.51
2.21
1.79
1.63
2.45
1.73
1.37
0.64
2.23
1.31
1.41
1.07
50.45
49.S3
54.23
15.36
54.03
43.99
49.43
22.07
62.42
57.12
60.25
50.60
47.60
34, 3^
18.78
19.58
72.40
64.41
28.92
21.81
68.54
80.64
39.12
41.83
54.50
49.91
30.71
10.80
54.16
33.82
27.16
22.84
5.77 103.08
4.05 64.68
4.74 58.14
581.3
608.1
592.7
626.6
624.8
606.3
575.7
605.4
574.4
660.1
628.3
615.2
6 7 D. 7
604.3
623.4
546.0
562.2
555.0
602.7
567.7
566.6
534.7
560.8
661.4
696.5
694.1
643.4
567.0
590.5
571.1
645.4
336.1
381.1
433.0
1.29	13.31
1.28	12.82
1.52 12.97
1.51	13.58
0.S8 12.43
1.02 13.06
1.19 13.46
1.86 13.81
1.29 13.05
0.88 11.76
0.98 12.17
1.56 12.68
1.26 11.52
L.67 12.18
1.32 13.94
1.74 13.51
1.09 13.30
0.68 13.24
0.87 14.70
1.58 13.89
1.03	12.99
1.07	12.67
1.06	14.75
1.07	14.05
1.18	11.76
1.04 11.37
1.85	11.89
1.85	13.40
1.25 13.46
0.87 13.70
1.40 14.36
1.64 12.96
1.61 17.19
1.80 17.91
1.01 16.46
2.22
2.11
2.43
0.82
1.77
1.63
1.83
0.97
2.91
1.90
2.16
1.99
1.50
1.40
1.02
0.91
2.76
2.24
1.41
0.94
2.81
2.60
2.25
2.49
2.44
1.90
2.55
0.67
2.80
1.72
1.59
1.99
4.66
6.16
58.20
58.73
62.34
20.03
59.89
55.31
56.17
25.29
66.80
62.05
61.07
53.60
36.75
18.73
17.68
75.83
58.90
30.93
24.41
75.22
90.10
48.25
53.44
53.45
53.67
39.55
9.27
57.77
39.30
28.11
28.08
75.60
99.36
595.2
621.9
607.2
643.8
645.1
622.6
592.0
623.9
589.9
689.4
640.8
642.0
717.4
697.5
621.2
643.4
567.4
579.1
566.5
620.1
580.4
579.4
544.6
570.8
683.3
717.9
706.5
661.6
581:2
608.1
583.8
667.4
390.6
430.3
1.44	12.79
1.45	12.31
1.73 12.45
1.60 13.09
1.09 11.92
1.07 12.42
1.32 12.94
1.99 13.31
1.54	12.61
1.07	11.19
1.11	11.9^
1.79	12.12
1.23	11.12
1.72	11.63
1.84	13.57
1.82	13.17
1.28 12.76
0.82 13.08
1.00 14.33
1.71 13.42
1.08 12.54
1.13	12.17
1.13	14.14
1.26	13.39
1.22	11.45
1.08 10.98
2.27	11.43
1.95	13.09
1.32 13.04
0.92 13.14
1.43 14.02
2.05 12.36
1.76 16.93
0.82 14.65
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-6

-------
APPENDIX B
(CONTD.)
LISTING OF FEDERAL TEST PROCEDURES
RESULTS ON INDIVIDUAL VEHICLES
VEH. VEH VEH 	
NO. MAKE IYP OWN HC
—HOT 74 COMPOSITE—
jRAMS PER MILE	
CO C02 NOX
MPG
HC
--COLD 1975 COMPOSITE-
-GRAMS PER MILE	
CO C02 NOX
MPG
8051 OLDS AUT PVT
BASELINE	6.59	156.13	472.6
MANU. TUNE-UP	4.27	62.34	732.5
PARA ADJ/DEVICE	4.19	70.64	587.1
TUNEUP/PARADJ/DEV	5.77	43.61	599.3
9019 FORD AUT GSA
BASELINE	3.96	110.54	369.6
MANU. TUNE-UP	3.98	91.45	423.4
TUNEUP/PARADJ/DEV	3,46	42.18	422.4
9033 CHEV AUT PVT
BASELINE	11.38	124.43	401.5
MANU. TUNE-UP	6.43	73.92	459.3
PARA ADJ/DEVICE	7.26	62.10	448.6
TUNEUP/PARADJ/DEV	6.27	47.18	486.2
9042 PLYM AUT PVT
BASELINE	4.53	93.76	516.6
MANU. TUNE-UP	5.23	72.19	480.4
PARA ADJ/DEVICE	4.81	59.74	518.2
TUNEUP/PARADJ/DEV	5.29	52.02	503.2
9050 FORD AUT PVT
BASELINE	7.57	86.26	500.8
MANU. TUNE-UP	5.85	70.81	528.8
PARA ADJ/DEVICE	5.61	50.15	498.3
TUNEUP/PARADJ/DEV	6.85	65.74	535.0
2.22 12.01
4.87 10.52
1.82 12.48
3.69 12.94
1.03 15.97
1.33 15.31
1.91 17.76
2.21 14.02
2.77 14.89
3.39 15.59
3.43 15.30
2.43 13.08
3.70 14.54
2.86 14.15
3.14 14.75
4.35 13.44
4.99 13.41
4.05 14.83
3.81 13.45
6.84 161.97
4.84 69.74
4.38 75.38
6.15 52.02
4.22 101.97
3.89 49.05
14.66	149.67
7.47	92.27
8.50 81.54
7.44 69.23
6.47 121.23
7.81 104.11
4.98 58.74
8.01 88.53
S.02	93.57
7.62	82.06
7.15	56.25
7.73	74.14
492.4
759.1
609.9
623.3
428.5
431.7
411.1
468.9
460.7
493.9
527.8
487.5
537.5
513.9
519.3
548.0
516.3
553.9
2.34 11.55
5.20 10.04
1.90 11.96
3.66 12.25
1.26 14.74
1.88 17.03
2.04 12.81
2.69 13.92
3.21 14.41
3.16 14.17
2.30 12.01
4.04 13.13
2.98 13.75
2.88 13.08
4.30 12.83
4.88 12.66
3.95 14.15
3.73 12.77
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
B-7

-------
APPENDIX C
TABLES OF TEST RESULTS
DATA SET 1
DATA SET 2
DATA SET 3
PAGE C-2
PAGE C-14
PAGE C-33
C-l

-------
1968-1972 VEHICLES
DATA SET 1
7 VEHICLES
C-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
C1968-1972 VEHICLES-HOT START DATA)
(BASELINE)
#
OF
HC

CO

C02
NOX
VEH. MEAN
S. D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
4
4. 16
1.2
70.54
22. 1
378.8
43.4
2.08
.71
CHRYSLER
1
6.86
0.0
129.56
0.0
494.9
0.0
1.45
0.00
FORD MOTOR CO.
2
3.55
0.6
80.00
43.2
394.6
35.3
1.65
.88
GENERAL MOTORS
0







IMPORTS
0








*MODEL YEAR









1968
1
5.77
0.0
103.08
0.0
336.1
0.0
1.61
0.00
1969
1
3.96
0.0
110.54
0.0
369.6
0.0
1.03
0.00
1970
4
3.50
0.6
57. 13
6.7
399.7
35.3
2. 24
.64
1971
1
6.86
0.0
129.56
0-0
494 .9
0.0
1.45
0.00
1972
0







1973
0








1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
7
4.37
1.4
81.67
32.0
399.9
54.4
1.87
.67
TRUCK
0








-VEHICLE OWNER









GSA
4
4.40
0.9
83. 25
27.7
362.5
22. 5
1.99
.84
PRIVATE OUKHR
3
4. 33
2. 2
79. 56
43.6
44 9.8
39.8
1.70
. 4 9
"CONTROL OPT I OH
S (COL
v'VERTEK, AIR
. PUMP)





CNV/A.FMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
0








NO CNV/NO APMP
7
4.37
1.4
81.67
32.0
399.9
54.4
1.87
.67
^DISPLACEMENT









LESS THAN 151
0








151 - 250
5
4.15
1.0
76.50
28.4
373.9
32.1
2.05
.73
251 - 350
1
3.00
0.0
59.67
0.0
435.0
0.0
1. 38
0.00
MORE THAN 350
1
6.86
0.0
129.56
0.0
494.9
0.0
1.45
0.00
*I.NERTIA WEIGHT









1800 - 2799
1
3.13
0.0
49.46
0.0
419.5
0.0
2.27
0.00
2800 - 3799
5
4.12
1.0
78.54
26. 2
377.0
37.8
1.87
.77
3800 - 4799
1
6.86
0.0
129.56
0.0
494.9
0.0
1.45
0.00
MPG
1.4
0.0
1.1
0.0
0.0
1.	3
0.0
67 16.7 2.2
84 17.6 1.5
41-500- - 5799
1.3
0.0
0.0
0.0
1.4
0«5
ALL' VEHICLES
7 4.37 1.4 81.67 32.0 399.9 54.4 1.87 .67 16.7 2.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES-HOT START DATA)
(hANU. TUNE-UP)
ir OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
4
3.39
0.6
42.48
15.5
427.5
43.5
2.54
1.11
17.6
1.0
ChR'iSLES
1
3.75
0.0
55.50
0.0
535. 1
0.0
2.86
0.00
13.0
0.0
FORD MOTOR CO.
2
3.47
0.7
53.38
53.8
404.7
26.4
2.77
2.04
18.2
4.1
GENERAL MOTORS
0










IMPORTS
0










*M0DEL YEAR











1968
1
4.05
0.0
64.68
0.0
381.1
0.0
1.80
0.00
17.9
0.0
1969
1
3.98
0.0
91.45
0.0
423.4
0.0
1.33
0.00
15.3
0.0
1970
4
3.12
0.4
30.14
10.9
428.7
41.7
3.14
1.23
18.4
2.1
1971
1
3.75
0.0
55.50
0.0
585. 1
0.0
2.86
0.00
13.0
0.0
1972
0










1973
0










1974
0










1975
0










•¦VEHICLE TYPE











AUTOMOBILE
7
3.47
0.5
47.46
25.3
443.5
71.2
2.65
1.15
17.1
2.6
TRUCK
0










^VEHICLE OWNER











GSA
4
3.73
0.3
56.41
27.6
412.0
21.4
2.53
1.13
17.4
1.4
PRIVATE OWNER
3
3.11
0.6
35.51
20.1
485.5
99.5
2.82
1.42
16.8
4.1
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
0










NO CNV/NO APMP
7
3.47
0.5
47.46
25.3
443.5
71.2
2.65
1.15
17.1
2.6
^DISPLACEMENT











LESS THAN 151
0










151 - 250
5
3.58
0.4
48. 19
30.2
406.8
21.8
2.86
1.23
18.2
2.1
251 - 350
1
2.62
0.0
35.73
0.0
485.4
0.0
1.38
0.00
16.1
0.0
MORE THAN 350
1
3.75
0.0
55.50
0.0
585.1
0.0
2.86
0.00
13.0
0.0
*INERTIA WEIGHT











1800 - 2799
1
2.96
0.0
15.31
0.0
386.1
0.0
4.21
0.00
21.1
0.0
2800 - 3799
5
3.51
0.6
52.28
25.7
426.7
37.7
2.30
1.11
17.2
1.3
3800 - 4799
1
3.75
0.0
55.50
0.0
585.1
0.0
2.86
0,00
13.0
0.0
4800 - 5799
0









ALL VEHICLES
7
3.47
0.5
47.46
25.3
443.5
71.2
2.65
1.15
17.1
2.6
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-4

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)



(BASELINE-MANU. TUNE-UP)





if
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
4
3.39
0.6
42.48
15.5
427.5
43.5
2.54
1. 11
17.6
1.0
CHRYSLER
1
3.75
0.0
55.50
0.0
585.1
0.0
2.86
0.00
13.0
0.0
FORD MOTOR CO.
2
3.47
0.7
53.38
53.8
404.7
26.4
2.77
2.04
18.2
4.1
GENERAL MOTORS
0










IMPORTS .
0










*M0DEL YEAR











1968
1
4.05
0.0
64.68
0.0
381.1
0.0
1.80
0.00
17.9
0.0
1969
1
3.98
0.0
91.45
0.0
4 23.4
0.0
1 .33
0.00
15.3
0.0
1970
4
3.12
0.4
30. 14
10.9
428. 7
41.7
3. 14
1.23
18.4
2.1
1971
1
3.75
0.0
55.50
0.0
585. 1
0.0
2.86
0.00
13.0
0.0
1972
0










1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
7
3.47
0.5
47.46
25.3
443.5
71.2
2.65
1.15
17.1
2.6
TRUCK
0










*VEHICLE OWNER











GSA
4
3.73
0.3
56.41
27.6
412.0
21.4
2.53
1. 13
17.4
1.4
PRIVATE OWNER
3
3.11
0.6
35.51
20. 1
4 85.5
99.5
2.82
1.42
16.8
4.1
"CONTROL- OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
0










NO CNV/NO APMP
7
3.47
0.5
47.46
25. 3
443.5
71.2
2.65
1.15
17.1
2.6
^DISPLACEMENT











LESS THAN 151
0










151 - 250
5
3.58
0.4
48. 19
30. 2
406.8
21.8
2.86
1.23
18.2
2.1
251 - 350
1
2.62
0.0
35.73
0.0
485.4
0.0
1.38
0.00
16.1
0.0
MORE THAN 350
1
3.75
0.0
55.50
0.0
585. 1-
0.0
2.86
0-00
13.0
0.0
*INERTIA WEIGHT'











1800 - 2799
1
2.96
0.0
15.31
0.0
386. 1
0.0
4.21
0.00
21.1
0.0
2800 - 3799
5
3.51
0.6
52.28
25.7
426. 7
37.7
2.30
1.11
17.2
1.3
3800 - 4799
1
3. 75
0.0
55.50
0.0
585. 1
0.0
2.86
0.00
13.0
0.0
4800 - 5799
0









ALL VEHICLES
7
3.47
0.5
47.46
25.3
443.5
71.2
2.65
1.15
17.1
2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968—L972 VEHICLES-HOT START DATA)



(BASELINE-:iANU. TUNE-UP)



//
OF
HC

CO

C02 NOX MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D. MEAN
S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
4
0.77
0. 7
28.05
11.2
-48. 7
8.7 -0.46
.45 0.1
1.0
CHRYSLER
1
3.11
0.0
74.06
0.0
-90.2
0.0 -1.41
0.00 -0.7
0.0
FORD MOTOR CO.
2
0.08
0.1
26.62
10.6
-10. 2
61.7 -1.12
1.16 -1.5
3.0
GENERAL MOTORS
0








IMPORTS
0








*M0DEL YEAR









1968
1
1.72
0.0
38.40
0.0
-45.0
0.0 -0.19
0.00 -0.7
0.0
1969
1
-0.02
0.0
19.09
0.0
-53.8
0.0 -0.30
0.00 0.7
0.0
1970
4
0.38
0.3
26.99
10. 1
-29.1
42.5 -0.90
.81 -0.6
2.2
1971
1
3. 11
0.0
74.06
0.0
-90. 2
0.0 -1.41
0.00 -0.7
0.0
1972
0








1973
0








1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
7
0.90
1.1
34. 22
19.8
-43. 6
37.7 -0.78
.70 -0.5
1.6
TRUCK
0








^VEHICLE OWNER









GSA
4
0.67
0. 8
26.84
12.1
-49.5
9.1 -0.54
.36 0.2
1.1
PRIVATE OWNER
3
1. 22
1.6
44.05
26.5
-35.7
63.1 -1.12
1.00 -1.3
2. 1
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
0








NO CNV/NO APMP
7
0.90
1.1
34. 22
19.8
-43.6
00
0
1
r-.
ro
.70 -0.5
1.6
^DISPLACEMENT









LESS THAN 151
0








151 - 250
5
0.57
0.7
28.30
10.9
-32.9
37.9 -0.82
.70 -0.6
2.0
251 - 350
1
0.38
0.0
23.94
0.0
-50.4
0.0 0.00
0.00 0.4
0.0
MORE THAN 350
1
3.11
0.0
74.06
0.0
-90.2
0.0 -1.41
0.00 -0.7
0.0
*INERTIA WEIGHT









1800 - 2799
1
0.17
0.0
34. 15
0.0
33.4
0.0 -1.94
0.00 -3.6
0.0
2800 - 3799
5
0.61
0.7
26.26
10.5
-49.7
7.9 -0.43
.39 0.2
0.9
3800 - 4799
1
3.11
0.0
74.06
0.0
-90. 2
0.0 -1.41
0.00 -0.7
0.0
4800 - 5799
0








ALL VEHICLES
7
.0.90
1.1
34. 22
19.8
-43.6
37.7 -0.78
•
O
1
o
Ln
1.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-6

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO 2
MEAN S.D.
NOX
MEAN S.D.
MPG
MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
4
16.5
10.2
39.6
12.0
-13.0
2.9
-18.8
17.2
0.4
5.6
CHRYSLER
1
45.3
0.0
57.2
0.0
-18.2
0.0
-97.2
0.0
-5.3
0.0
FORD MOTOR CO.
2
2.5
4.2
43.2
36.6
-3.3
15.9
-57.3
39.8
-8.4
17.7
GENERAL MOTORS
0










IMPORTS
0










*MODEL YEAR
1968	1
1969	1
1970	4
1971	1
1972	0
1973	0
1974	0
1975	0
AVEHICLE TYPE
AUTOMOBILE	7
TRUCK	0
^VEHICLE OWNER
GSA	4
PRIVATE OWNER	3
29.8
0.0
37.3
0.0
-13.4
0.0
-11.8
0.0
-4.2
0.0
-0.5
0.0
17.3
0.0
-14.6
0.0
-29.1
0.0
4.1
0.0
10.4
6.1
47.5
18.6
-7.6
10.8
-37.2
36.2
-3.8
12.3
45. 3
0.0
57.2 ¦
0.0
-18.2
0.0
-97.2
0.0
-5.3
0.0
16.6 16.1 43.1 18.3 -11.0 8.8 -41.0 36.8 -2.9 9.3
13.2
21.1
13.5
21.3
33.9
55.4
16.3 -13.7 2.8 -26.1 12.0 0.9 5.9
14.5 -7.3 13.6 -60.9 53.1 -8.0 11.7
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NO CNV
NO CNV/NO APMP
0
7
16.6
16.1
43. 1
18.3
-11.0
8.8
-41.0
36.8
-2.9
9.3
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
0
5
1
1
11.7
12.7
45.3
12.2
0.0
0.0
40.9
40. 1
57.2
21.1
0.0
0.0
-9.4
-11.6
-18.2
10.0
0.0
0.0
-38. 0
0.0
-97.2
28.5
0.0
0.0
-3.5
2.1
-5.3
11.0
0.0
0.0
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
1
0
5.4
13. 1
45.3
0.0
11.7
0.0
69.0
35. 1
57.2
0.0
14.4
0.0
8.0
-13.3
-18.2
0.0
2.6
0.0
-85.5
-20.9
-97. 2
0.0
15.6
0.0
-20.9
1.1
-5. 3
0.0
5.1
0.0
ALL VEHICLES
7
16.6
16. 1
43. 1
18.3
-11.0
8.8
-41.0
36.8
-2.9
9.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE--TUNEUP/PARADJ/DEV)

OF
HC

CO

C02
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER





AMER. MOTORS
4
3. 78
0.8
33.87
18.1
434.4
19.4
CHRYSLER
1
3.58
0. 0
29.44
0.0
5S6.0
0.0
FORD MOTOR CO.
2
3.27
0.3
27.94
20. 1
407.2
21.5
GENERAL MOTORS
0






IMPORTS
0






*M0DEL YEAR







1968
1
4. 74'
0.0
58. 14
0.0
433.0
0.0
1969
1
3.46
0.0
42. 18
0.0
422.4
0.0
1970
4
3.37
0.5
22.76
10. 1
424.1
28.9
1971
1
3.58
0.0
29.44
0.0
596.0
0.0
1972
0






1973
0






1974
0






1975
0






•'VEHICLE TYPE







AUTOMOBILE
7
3.61
0.6
31.54
15.5
449.7
67.8
TRUCK
0






*VEHICLE OWNER







GSA
4
3.94
0.6
38.30
17.2
424.5
6.2
PRIVATE OWNER
n
3.17
0.4
22.53
8.0
483.4
103.6
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)



CNV/A.PMP
0






CNV/NO A.PMP
0






A.PMP/NO CNV
0






NO CNV/NO APMP
7
3.61
0.6
31.54
15.5
449. 7
67.8
^DISPLACEMENT







LESS THAN 151
0






151 - 250
5
3.77
0.6
33.38
18.5
418.0
15. 5
251 - 350
1
2.83
0.0
24.46
0.0
462. 1
0.0
MORE THAN 350
1
3.58
0.0
29.44
0.0
596.0
0.0
*INERTIA WEIGHT







1800 - 2799
1
3.09
0.0
13.70
0.0
392.0
0.0
2800 - 3799
5
3.72
0.7
35.53
16.1
432.0
17.7
3800 - 4799
1
3.58
0.0
29.44
0.0
596.0
0.0
4800 - 5799
0






ALL VEHICLES
7
3.61
0.6
31.54
15.5
449.7
67.8
NOX	MPG
MEAN S.D. MEM S.D.
2.01 .93 17.8 1.2
2.29 0.00 13.6 0.0
2.37 .65 19.4 2.3
1.01 0.00	16.5	0.0
1.91 0.00 17.8	0.0
2.47 .68 18.9	1.5
2.29 0.00	13.6	0.0
2.16 .73 17.7 2.3
2.11 .87 17.9 1.1
2.21 .66 17.3 3.7
2.16 .73 17.7 2.3
2.26 .82 18.5 1.7
1.51 0.00 17.4 0.0
2.29 0.00 13.6 0.0
2.83 0.00 21.0 0.0
1.99 .80 17.8 1.0
2.29 0.00 13.6 0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-8

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
4
0.38
0.5
36.67
6.7
-55.6
33.7 0.06
.36 -0.1
CHRYSLER
1
3.28
0.0
100.12
0.0
-101.1
0.0 -0.84
0.00 -1.3
FORD MOTOR CO.
2
0.27
0.3
52.06
23.1
-12.6
56.8 -0.72
.23 -2.6
GENERAL MOTORS
0







IMPORTS
0







*MODEL YEAR








1968
1
1.03
0.0
44.94
0.0
-96.9
0.0 0.60
0.00 0.7
1969
1
0.50
0.0
68.36
0.0
-52.8
0.0 -0.88
0.00 -1.8
1970
4
0.14
0.2
34.37
3.9
-2 4.5
39.7 -0.22
.23 -1.1
1971
1
3.28
0.0
100.12
0.0
-101.1
0.0 -0.84
0.00 -1.3
1972
0







1973
0







1974
0







1975
0







*VEHICLE TYPE








AUTOMOBILE
7
0.76
1.2
50.13
25.5
-49.8
45.0 -0.29
.52 -1.0
TRUCK
0







*VEHICLE OWNER








GSA
4
0.47
0.5
44.96
17.0
-62.0
28.5 -0.12
.61 -0.3
PRIVATE OWNER
3
1 .16
1.8
57.03
37. 3
-33.6
64.5 -0.51
.36 -1.9
"CONTROL OPTIONS(CONVERTER,AIR
PUMP)




CNV/A.PMP
0







CNV/NO A.PMP
0







A. PHP/NO CNV
0







NO CNV/NO APMP
7
0. 76
1.2
50.13
25.5
-49.8
45.0 -0.29
.52 -1.0
^DISPLACEMENT








LESS THAN 151
0







151 - 250
5
0.38
0.4
43. 12
15.3
-44. 1
47.0 -0.21
.56 -0.9
251 - 350
1
0. 17
0.0
35.21
0.0
-27.1
0.0 -0.13
0.00 -0.9
MORE THAN 350
1
3. 28
0.0
100.12
0.0
-101.1
0.0 -0.84
0.00 -1.3
* INERTIA WEIGHT








1800 - 2799
1
0.04
0.0
35. 76
0.0
27.5
0.0 -0.56
0.00 -3.5
2800 - 3799
5
0.41
0.4
43.01
15.3
-55.0
29.2 -0.12
.52 -0.4
3800 - 4799
1
3. 28
0.0
100.12
0.0
-101.1
0.0 -0.84
0.00 -1.3
4800 - 5799
0







ALL VEHICLES
7
0.76
1.2
50. 13
25.5
-49.8
45.0 -0.29
.52 -1.0
0.8
0.0
1.2
0.0
0.0
1.6
0.0
1.4
1.1
1.4
1.4
1.7
0.0
0.0
0.0
1.0
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-9

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
4
7.7
8.2
54. 1
12.6
-15.5
10.7
5.1
21.7 -0.7
4.7
CHRYSLER
1
47.8
0.0
77.3
0.0
-20.4
0.0
-57.9
0.0 -10.2
0.0
FORD MOTOR CO.
2
7.0
8.0
67. 1
7.4
-3.9
14.7
-55. 1
43.0 -15.5
6.1
GENERAL MOTORS
0









IMPORTS
0









*MODEL YEAR










1968
1
17.9
0.0
43.6
O.O
-28.8
0.0
37.3
0.0 4.2
0.0
1969
1
12.6
0.0
61.8
0.0
-14.3
0.0
-85.4
0.0 -11.2
0.0
1970
4
3.6
5.0
61.3
12.8
-6.7
10.6
-10.4
9.9 -6.7
9.3
1971
1
47.8
0.0
77. 3
0.0
-20.4
0.0
-57.9
0.0 -10.2
0.0
1972
0









1973
0









1974
0









1975
0









^VEHICLE TYPE










AUTOMOBILE
7
13. 2
16.6
61. 1
13.3
-12.9
11.6
-21.1
40.1 -6.3
8.3
TRUCK
0









AVEHICLE OWNER










GSA
4
9.5
8.4
54.8
13.0
-17.5
9.0
-14.0
51.5 -2.1
6.9
PRIVATE OWNER
3
18. 3
25. 7
69. 5
9.4
-6.7
13.5
-30.7
24.8 -11.9
7.2
*CONTROL OPTIONS(CONVERTER
, AIR
PUMP)






CMV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
0









NO CNV/NO APMP
7
13.2
16.6
61.1
13.3
-12.9
11.6
-21.1
40.1 -6.3
8.3
^DISPLACEMENT










LESS THAN 151
0









151 - 250
5
7.8
3. 1
58.3
13.7
-12.7
13.3
-16.1
44.8 -5.6
9.9
251 - 350
1
5. 7
0.0
59.0
0.0
-6.2
0.0
-9.4
0.0 -5.6
0.0
MORE THAN 350
1
47.8
0.0
77.3
0.0
-20.4
0.0
-57.9
0.0 -10.2
0.0
*INERTIA WEIGHT










1800 - 2799
1
1.3
0.0
72.3
0.0
6. 6
0.0
-24. 7
0.0 -19.8
0.0
2800 - 3799
5
8.7
7.4
55.6
11.4
-15.3
9.3
-13.0
44.6 -2.8
6.2
3800 - 4799
1
47.8
0.0
77.3
0.0
-20.4
0.0
-57.9
0.0 -10.2
0.0
4800 - 5799
0









ALL VEHICLES
7
13.2
16.6
61.1
13.3
-12.9
11.6
-21.1
40.1 -6.3
8.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX., AURORA, COLO. 80011
C-10

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
//OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	4 3.78 0.8 33.87 18.1 434.4 19.4 2.01 .93 17.8 1.2
CHRYSLER	1 3.58 0.0 29.44 0.0 596.0 0.0 2.29 0.00 13.6 0.0
FORD MOTOR CO.	2 3.27 0.3 27.94 20.1 407.2 21.5 2.37 .65 19.4 2.3
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	1 4.74 0.0 58.14 0.0 433.0 0.0 1.01 0-00 16.5 0.0
1969	1 3.46 0.0 42.18 0.0 422.4 0.0 1.91 0-00 17.8 0.0
1970	4 3.37 0.5 22.76 10.1 424.1 28.9 2.47 .68 18.9 1.5
1971	1 3.58 0.0 29.44 0.0 596.0 0.0 2.29 0.00 13.6 0-0
1972	0
1973	0
1974	0
1975	0
^VEHICLE TYPE
AUTOMOBILE	7 3.61 0.6 31.54 15.5 449.7 67.8 2.16 .73 17.7 2.3
TRUCK	0
^VEHICLE OWNER
GSA	4 3.94 0.6 38.30 17.2 424.5 6.2 2.11 .87 17.9 1.1
PRIVATE OWNER	3 3.17 0.4 22.53 8.0 483.4 103.6 2.21 .66 17.3 3.7
-CONTROL OPT IONS(CONVERTER,AIR PUMP)
CNV/A.PHP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	0
NO CNV/NO APMP	7 3.61 0.6 31.54 15.5 449.7 67.8 2.16 .73 17.7 2.3
^DISPLACEMENT
LESS THAN 151	0
151 - 250	5 3. 77 0.6 33.38 18. 5 418.0 15. 5 2.26 .82 18.5 1 .7
251 - 350	1 2.83 0.0 24.46 0.0 462.1 0.0 1.51 0-00 17.4 0.0
MORE THAN 350	1 3.5S 0.0 29.44 0.0 596.0 0.0 2.29 0.00 13.6 0.0
*INERTIA WEIGHT
1800 - 2799	1 3.09 0.0 13.70 0.0 392.0 0.0 2.83 0-00 21.0 0.0
2800-3799	5 3.72 0.7 35.53 16.1 432.0 17.7 1.99 .80 17.8 1.0
3800 - 4799	1 3.58 0.0 29.44 0.0 596.0 0.0 2.29 0-00 13.6 0.0
4800 - 5799	0
ALL VEHICLES 7 3.61 0.6 31.54 15.5 449.7 67.8 2.16 .73 17.7 2.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-ll

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX
MEAN S.D.
MPG
MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 4 -0.38 0.2 8.61 12.7 -6.9 32.9
CHRYSLER	1 0.17 0.0 26.06 0.0 -10.9 0.0
FORD MOTOR CO. 2 0.19 0.5 25.44 33.7 -2.4 4.9
GENERAL MOTORS 0
IMPORTS	0
0.52 .47 -0.2 1.3
0.57 0.00 -0.6 0.0
0.40 1.39 -1.1 1.9
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
^VEHICLE TYPE
AUTOMOBILE
TRUCK
1 -0.69
1 0.52
-0. 24
0.17
0.0
0.0
0. 1
0.0
7 -0.14 0.4
0
6.54	0.0 -51.9	0.0 0.79 0.00 1.4	0.0
49.27	0.0 1.0	0.0 -0.58 0.00 -2.4	0.0
7.38 13.2	4.6	15.1 0.67 .64 -0.5	0.8
26.06	0.0 -10.9	0.0 0.57 0.00 -0.6	0.0
15.91 18.8 -6.2 23.5 0.50 .66 -0.5 1.2
*VE!IICLE OWNER
GSA
PRIVATE OWNER
4 -0.20
3 -0.06
0.5
0. 2
18.11
12.98
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
a.pmp/no cm
NO CNV/NO APMP
*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
0
0
0
7
24. 3
12. 3
-12.5 27.5
2.2 18.5
0.41
0.61
,68 -0.5
,76 -0.6
0
5 -0.19
1	-0.21
1 0. 17
1.7
0.7
-0.14 0.4 15.91 18.8 -6.2 23.5 0.50 .66-0.5 1.2
0.4 14.81 22.3 -11.2 24.0 0.61 .73 -0.4 1.5
0.0 11.27 0.0 23.3 0.0-0.130.00-1.3 0.0
0.0 26.06 0.0 -10.9 0.0 0.57 0.00 -0.6 0.0
*INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1 -0.13
5 -0.20
1 0.17
0.0
0.4
0.0
1.61
16.75
26.06
0.0
21.3
0.0
-5.9 0.0
-5.3 28.7
-10.9 0-0
1.38 0.00 0.2 0.0
0.30 .64 -0.7 1.5
0.57 0.00 -0.6 0.0
ALL VEHICLES
7 -0.14 0.4 15.91 18.8 -6.2 23.5 0.50 .66 -0.5 1.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-12

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)


(MANU. TUNE-UP-
TUNEUP/PARADJ/DEV)





OF
HC

CO

CO 2
NOX

MPG

VEH.
MEAN S
.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS '
4
-10.9
4.3
19.1
35.1
-2.2
8.2
19.0
22.5
-1.3
7.2
CHRYSLER
1
4.5
0.0
47.0
0.0
-1.9
0.0
19.9
0.0
-4.7
0.0
FORD MOTOR CO.
2
4.3
12.3
32.2
30.7
-0.6
1.2
-5.4
54.0
-7.6
12.0
GENERAL MOTORS
0










IMPORTS
0










*MODEL YEAR











1968
1
-17.0
0.0
10.1
0.0
-13.6
0.0
43.9
0.0
8. 1
0.0
1969
1
13. 1
0.0
53.9
0.0
0.2
0.0
-43.6
0.0
-16.0
0.0
1970
4
-7. 7
2.5
19.2
35.0
0.9
3.3
16.2
18.7
-3.1
4.4
1971
1
4.5
0.0
47.0
0.0
-1.9
0.0
19.9
0.0
-4.7
0.0
1972
0










1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
7
-4.3
10. 1
26.8
29.8
-1.7
5.8
12.2
29.7
-3.6
7.7
TRUCK
0










*VEHICLE OWNER











GSA
L
-5.6
13.0
24. 7
39. 2
-3.3
7.1
10.5
38.0
-3.3
10. 2
PRIVATE OWNER
3
-2.6
6. 5
29.7
18.3
0.5
3.8
14.4
21.6
-3.9
4.5
^CONTROL OPTIONS (C
ONVliRTEK
:,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
0










NO CNV/NO APMP
7
-4.3
10. 1
26.8
' 29.8
-1.7
5.8
12.2
29.7
-3.6
7.7
'¦DISPLACEMENT











LESS THAN 151
0










151 - 250
5
-5.4
11.3
21.9
34.6
-3.0
6.2
14.9
34.4
-2.5
9.0
251 - 350
1
-8.0
0.0
31.5
0.0
4.8
0.0
-9.4
0.0
-7.9
0.0
MORE THAN 350
1
4. 5
0.0
47.0
0.0
-1.9
0.0
19.9
0.0
-4.7
0.0
*INERTIA WEIGHT











1800 - 2799
1
-4.4
0.0
10.5
0.0
-1.5
0.0
32.8
0.0
0.9
0.0
2800 - 3799
5
-6. 1
11.3
26. 1
34. 1
-1. 7
7.2
6.5
34.1
-4.3
9.1
3800 - 4799
1
4.5
0.0
47.0
0.0
-1.9
0.0
19.9
0.0
-4.7
0.0
4800 - 5799
0







ALL VEHICLES
7
-4.3
10.1
26.8
29.8
-1.7
5.8
12. 2
29. 7
-3.6
7.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-13

-------
1968-1972 VEHICLES
DATA SET 2
11 VEHICLES
C-14

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE)
#
OF
HC

VEH.
MEAN
S.D.
^VEHICLE MANUFACTURER

AMER. MOTORS
1
6.86
0.0
CHRYSLER
2
5.39
1.2
FORD MOTOR CO.
3
7.53
3.6
GENERAL MOTORS
5
6.77
3.1
IMPORTS
0


*MODEL YEAR



1968
1
6.59
0.0
1969
3
7.83
3.4
1970
4
7.76
2.3
1971
2
5. 10
1.6
1972
1
2.80
0.0
1973
0


1974
0


1975
0


*VEHICLE TYPE



AUTOMOBILE
11
6.74
2.7
TRUCK
0


*VEHICLE OUKER



GSA ,
1
3.93
0.0
PRIVATE OWNER
10
7.02
2.6
*CONTROL OPTIONS
(CONVERTER,All
CNV/A.PMP
0


CNV/NO A.PliP
0


A.PHP/SO CNV
4
6.81
3.6
NO CNV/NO APMP
7
6.69
2.3
*DISPLACEMENT



LESS THAN 151
1
2.80
0.0
151 - 250
1
7.38
0.0
251 - 350
6
7.86
2.8
MORE THAN 350
3
5.59
1.4
*INERTIA WEIGHT



1800 - 2799
1
2.80
0.0
2800 - 3799
5
8.48
2.6
3800 - 4799
5
5.78
1.5
4800 - 5799
0


CO	CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN.S.D.
117.90	0.0	549.0	0.0	1.58 0.00 11.7 0.0
110.40	23.5	528.9	17.3	2.63 .28 12.4 1.0
76.93	23.5	567.0	106.1	3.97 .33 12.5 1.1
95.71	45.5	412.2	57.6	2.43 .43 15.6 • 2.9
L56. 13	0.0	472.6 0.0 2.22	0.00	12.0	0.0
.01.48	20.2	473.0 62.4	3.00	1.18	13.5	0.5
92.18	21.0	465.3 92.9	2.61	1.00	14.3	2.7
88.61	54.3	615.2 104.9	3.31	.69	11.5	0.2
41.48	0.0	385.2 0.0 2.65	0.00	19.3	0.0
95.28 34.5 488.1 95.2 2.81 .86 13.8 2.6
50.19 0.0 689.4 0.0 3.80 0.00 11.4 0.0
99.78 32.8 467.9 71.5 2.71 .84 14.1 2.6
80.60 35.2 397.1 53.8 2.49 .48 16.5 2.4
.03.66 33.8 540.0 70.6 3.00 1.00 12.3 0.8
41.48	0.0	385.2 0.0	2.65	0.00	19.3	0.0
89.75	0.0	335.6 0.0	2.01	0.00	17.7	0.0
97.24	21.2	490.8 51.3	2.90	1.03	13.4	1.1
111. 12	54. 7	567. 7 110.8	2.95	.80	11.7	0.3
41.48 0.0 385.2 0.0 2.65 0.00 19.3 0.0
98.63 23.2 452.6 85.4 2.53 .88 14.3 2.3
102.68 40.5 544.1 84.9 3.13 .91 12.3 0.9
ALL VEHICLES 11 6.74 2.7 95.28 34.5 488.1 95.2 2.81 .86 13.8 2.6
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-15

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)




(MANU.
TUNE-
•UP)





#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAiN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
6.50
0.0
122.82
0.0
529.2
0.0
1.59
0.00
11.9
0.0
CHRYSLER
2
5.14
0.1
75.71
5.0
532.2
73.3
3.44
.36
13.4
1.6
FORD MOTOR CO.
3
5.34
1.3
48.94
21.9
594.9
98.7
4.27
.70
13.1
1.8
GENERAL MOTORS
5
3.95
1.7
48.53
18.4
497.2
137.3
2.84
1.21
15.9
3.5
IMPORTS
0










*MODEL YEAR











1968
1
4.27
0.0
62.34
0.0
732.5
0.0
4.87
0.00
10.5
0.0
1969
3
6.17
0.8
72.31
1.6
489.5
35.6
3.82
1.11
14.3
0.8
1970
4
4.69
1.4
55.68
45.0
475.2
80.6
2.61
1.18
15.9
3.5
1971
2
4.68
0.5
64.08
21.4
646.2
87.9
3.39
.29
11.7
0.8
1972
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
1973
0










1974
0










1975
0










* VEHICLE TYPE











AUTOMOBILE
11
4.78
1.5
60.33
27.9
533.1
108.7
3.23
1.17
14.3
2.9
TRUCK
0










*VEHICLE OWNER











GSA
1
4.29
0.0
48.94
0.0
708.4
0.0
3.60
0.00
11.1
0.0
PRIVATE OWNER
10
4.82
1.6
61.47
29. 2
515.6
96.9
3.19
1.23
14.6
2.8
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A. PMP/NO CNV
4
3.87
2.0
45.07
19.3
438.3
¦ 45.4
2.33
.50
17.2
2.2
NO CNV/NO APMP
7
5.30
1.0
69.06
29.5
587.3
96.2
3.74
1. 16
12.6
1.6
~DISPLACEMENT











LESS THAN 151
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
151 - 250
1
3.33
0.0
37.21
0.0
371.0
0.0
1.90
0.00
20.2
0.0
251 - 350
6
5.66
1.1
67.07
34.0
499.7
40.4
3.34
1.21
14.4
1.7
MORE THAN 350
3
4.54
0.5
63.50
15.2
675.0
79.6
3.89
.88
11.3
0.9
*INERTIA WEIGHT











1800 - 2799
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
2800 - 3799
5
5.04
1.4
59.32
39.8
472.0
70.2
2.65
1.02
15.7
3.1
3800 - 4799
5
5.14
1.1
66.70
11.6
606.8
110.3
4.07
.81
12.4
1.6
4800 - 5799
0










ALL VEHICLES
11
4.78
1.5
60.33
27.9
533.1
108.7
3.23
1.17
14.3
2.9
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-16

-------
EXHAUST EMISSIONS BEFORE-MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE)
»
OF
HC

CO

CO 2
NOX
MPG
VER.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
^VEHICLE MANUFACTURER









AMER. MOTORS
1
7.05
0.0
64.30
0.0
4 89.9
0.0
2.03
0.00
14.5
0.0
CHRYSLER
2
4.85
0.1
57.01
3.9
558.8
57.4
2.65
.30
13.4
1.0
FORD MOTOR CO.
3
7.09
2.5
39.46
12.0
578.2
126.9
3.57
.47
13.7
2.3
GENERAL MOTORS
5
6. 29
1.9
49.89
22.6
464.8
75.9
2.41
1.03
16.0
2.2
IMPORTS
0








*MODEL YEAR











1968
1
4.19
0. 0
70.64
0.0
587.1
0.0
1.82
0.00
12.5
0.0
1969
3
6. 23
1.3
57. 33
6. 3
488.5
35.9
3.43
. 60
14.9
0.7
1970
4
8.13
1.2
41.21
24.9
4 70.8
48.4
2.24
1.03
15.9
1.3
1971
2
4.86
0.0
48. 01
8.9
661 .9
88.5
2.77
.47
11.8
1.2
1972
1
4.36
0.0
42.65
0.0
4 06.3
0.0
3.45
0.00
18.2
0.0
1973
0






-

1974
0










1975
0










'-VEHICLE TYPE











AUTOMOBILE
11
6.32
1.8
49.65
17.3
515.1
93.6
2.74
.89
14.8
2.2
TRUCK
0








*VEHICLE OWNER











GSA
1
4.83
0.0
41.75
0.0
724.5
0.0
3.11
0.00
11.0
0.0
PRIVATE OWNER
10
6.46
1.9
50. 44
18.0
494. 2
66. 1
2. 70
.93
15.1
1.9
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.81
1.7
44. 70
22.4
434 .2
38. 1
2.56
1. 13
I 6.9
1. 1
NO CNV/NO APMP
7
6.03
2.0
52.48
14.8
561.3
83.8
2.84
.80
13.5
1.5
*DISPLACEMENT











LESS THAN 151
1
4. 36
0.0
42.65
0.0
406. 3
0.0
3.45
0.00
18. 2
0.0
151 - 250
1
7.53
0.0
60. 22
0.0
400.6
0.0
1.04
0.00
17.1
0.0
251 - 350
6
7.28
1.7
46. 10
21.0
491 .4
24.9
3.04
.76
15.2
0.9
MORE THAN 350
3
4.64
0.4
55. 56
14.5
637.0
76.0
2.46
.65
12. 1
0.9
* INERTIA WEIGHT











1800 - -2799
1
4. 36
0.0
4 2.65
0.0
406. 3
0.0
3.45
0.00
18.2
0.0
2800 - 3799
5
7.96
1.1
45.39
23.5
4 66.4
43. 1
2.47
1 .03
15.8
1.1
3800 - 4799
5
5.07
0.9
55.31
10.8
585. 6
88.8
2.86
.83
13.0
1.5
4800 - 5799
0









ALL VEHICLES
11
6. 32
1.8
49.65
17.3'
515. 1
93.6
2.74
.89
14.8
2.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-17

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)

OF
HC

CO

C02 ¦
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
* VEHICLE MANUFACTURER









AMER. MOTORS
1
6.50
0.0
122.82
0.0
529.2
0.0
1.59
0.00
11.9
0.0
CHRYSLER
2
5. 14
0.1
75. 71
5.0
532.2
73.3
3.44
.36
13.4
1.6
FORD MOTOR CO.
3
5.34
1.3
48.94
21.9
594.9
98. 7
4.27
.70
13.1
1.8
GENERAL MOTORS
5
3.95
1.7
48.53
18.4
497. 2
137. 3
2.84
1.21
15.9
3.5
IMPORTS
0










*MODEL YEAR











1968
1
4.27
0.0
62.34
0.0
7 32.5
0.0
4.87
0.00
10.5
0.0
1969
3
6.17
0.8
72.31
1.6
489.5
35.6
3.82
1.11
14.3
0.8
1970
4
4.69
1.4
55.68
45.0
475. 2
80. 6
2.61
1.18
15.9
3.5
1971
2
4.68
0.5
64.08
21.4
646. 2
87.9
3.39
.29
11.7
0.8
1972
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
4. 78
1.5
60. 33
27.9
533.1
108. 7
3.23
1.17
14.3
2.9
TRUCK
0










*VEHICLE OWNER











GSA
1
4.29
0.0
48.94
0.0
708.4
0.0
3.60
0.00
11.1
0.0
PRIVATE OWNER
10
4.82
1.6
61.47
29. 2
515.6
96.9
3.19
1.23
14.6
2.8
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.87
2.0
45.07
19.3
438.3
45. 4
2.33
.50
17.2
2.2
NO CNV/NO APMP
7
5.30
1.0
69.06
29. 5
587. 3
96. 2
3.74
1.16
12.6
1.6
^DISPLACEMENT











LESS THAN 151
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
151 - 250
1
3.33
0.0
37.21
0.0
371 .0
0.0
1.90
0.00
20.2
0.0
251 - 350
6
5.66
1 .1
67.07
34.0
499. 7
40.4
3.34
1.21
14.4
1.7
MORE THAN 350
3
4.54
0.5
63.50
15. 2
675.0
79.6
3.89
.88
11.3
0.9
*INERTIA WEIGHT











1800 - 2799
1
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
2800 - 3799
5
5.04
1.4
59. 32
39.8
472.0
70.2
2.65
1.02
15.7
3.1
3800 - 4799
5
5.14
1.1
66.70
11.6
606.8
110.3
4.07
.81
12.4
1.6
4800 - 5799
0










ALL VEHICLES
11
4.78
1.5
60.33
27.9
533. 1
108.7
3.23
1.17
14.3
2.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-18

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.36
0.0
-4.92
0.0
19.8
0.0 -0.01
0.00 -0.2
CHRYSLER
2
0.25
1.3
34.69
18.6
-3.4
56.0 -0.81
.64 -1.0
FORD MOTOR CO.
3
2. 20
3.5
28.00
34.8
-2 7.9
8.9 -0.30
.44 -0.5
GENERAL MOTORS
5
2.82
1.6
47.18
31.7
-85.0
104.1 -0.40
1.34 -0.2
IMPORTS
0







*MODEL YEAR








1968
1
2.32
0.0
93.79
0.0
-259.9
0.0 -2.65
0.00 1.5
1969
3
1.66
2.9
29. 18
18.7
-16.5
48.0 -0.82
.39 -0.8
1970
4
3.06
2.6
36.51
31.4
-9.8
30.4 -0.00
.33 -1.6
1971
2
0.42
1.1
24.53
32.9
-31.0
17.0 -0.08
.40 -0.2
1972
1
1.17
0.0
7.93
0.0
-84.7
0.0 0.75
0.00 2.5
1973
0







1974
0







1975
0







*VEHICLE TYPE








AUTOMOBILE
11
1.96
2.2
34.94
30.4
-45.1
79.5 -0.41
.92 -0.5
TRUCK
0







*VEHICLE OWNER








GSA
1
-0.36
0.0
1.25
0.0
-19.0
0.0 0.20
0.00 0.3
PRIVATE OWNER
10
2. 19
2.2
38.31
29,8
-47. 7
83.3 -0-47
.95 -0.5
"'CONTROL OPTIONS
(CONVERTER,AIR
PUMP)




CNV/A.PMP
0







CNV/NO A.PMP
0







A.PMP/NO CNV
4
2.95
1.8
35.53
20-8
-41.2
41.3 0.16
.55 -0.7
NO CNV/NO APMP
7
1.40
2.4
34.61
36.4
-47.2
98.3 -0.74
.96 -0.3
^DISPLACEMENT








LESS THAN 151
1
1.17
0.0
7.93
0.0
-84.7
0.0 0.75
0.00 2.5
151 - 250
1
4.05
0.0
52.54
0.0
-35.4
0.0 0.11
0.00 -2.4
251 - 350
6
2.20
2.8
30.17
25.7
-8.9
37.0 -0.43
.55 -1.1
MORE THAN 350
3
1.05
1.3
47.62
46.3
-107.3
132.7 -0.94
1.51 0.4
*INERTIA WEIGHT








1800 - 2799
1
1.17
0.0
7.93
0.0
-84.7
0.0 0.75
0.00 2.5
2800 - 3799
5
3.44
2.4
39.31
27.9
-19.4
33.9 -0.12
.38 -1.5
3800 - 4799
5
0.64
1.2
35.97
36.5
-62.7
114.2 -0.94
1.09 -0.1
4800 - 5799
0







ALL VEHICLES
11
1.96
2.2
34.94
30.4
-45.1
79.5 -0.41
.92 -0.5
0.0
0.6
1.2
2.2
0.0
0.8
1.0
0.6
0.0
1.5
0.0
1.6
2.2
1.1
0.0
0.0
0.8
1.0
0.0
0.9
1.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-19

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)
ii OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER

AMER. MOTORS
1
5.
.2
0.
.0
-4.
2
0.
0
3.
, 6
0.
,0
-0.
6
0.
.0
-1.
,8
CHRYSLER
2
1.
.9
24.
.5
30.
3
10.
3
-0.
,5
10.
6
-32.
5
28.
.0
-8.
. 1
FORD MOTOR CO.
3
18,
.8
33.
, 6
30.
6
36.
1
-5.
,2
2.
,2
-7.
, 1
10.
,8
-4.
,1
GENERAL MOTORS
5
40.
.8
9.
,9
45.
,0
16.
,6
-19.
,8
21.
,6
-20.
.0
58.
, 8
-1.
,5
IMPORTS
0

















0.0
4.4
9.3
13.2
*MODEL YEAR
1968
1
35.2
0.0
60.1
0.0
-55.0
0.0
-119.4
0.0
12.4
0.0
1969
3
12.5
29.6
27.2
11.9
-4.3
10.8
-30.8
19.4
-5.7
5.7
1970
4
36.2
24.3
43. 1
33. 1
-2.8
7. 1
0.9
9.7
-10.7
6.0
1971
2
5.0
20.0
20. 1
24.9
-5.4
3.7
-3.7
12.7
-1.3
5.1
1972
1
41.8
0.0
19. 1
0.0
-22.0
0.0
28.3
0.0
12.9
0.0
1973
0










1974
0










1975.
0










*VEHICLE TYPE
AUTOMOBILE 11
TRUCK	0
24.5 24.6 33.9 24.4 -10.2 17.1 -17.0 39.9 -3.4 9.i
^VEHICLE OWNER
GSA -	1-9.2
PRIVATE OWNER 10 27'.8
0.0 2. 5 0.0 -2.8 0.0 5.3
23.1 37.1 23.2 -10.9 17.8 -19.2
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4
NO CNV/NO APMP	7
^DISPLACEMENT
42.1 10.8 41.2 16.5 -11.0 10.4 4.8
14.4 25.0 29.8 28.3 -9.7 20.7 -29.5
0.0 2.3 0.0
41.3 -4.0 10.1
22.3 -4.9 12.4
43.7 -2.5 9.0
LESS THAN 151
1
41.8
0.0
19.1
0.0
-22.0
0.0
28.3
0.0
12.9
0.0
151 - 250
1
54.9
0.0
58.5
0.0
-10.5
0.0
5.5
0.0
-13.6
0.0
251 - 350
6
21.2
26.5
32.5
26.2
-2.3
8. 1
-15.7
21.8
-7.7
6.1
MORE THAN 350
3
15.1
22.5
33.4
29.0
-21.9
28.8
-42.3
67.4
3.2.
8.7
*INERTIA WEIGHT











1800 - 2799
1
41.8
0.0
19.1
0.0
-22.0
0.0
28.3
0.0
12.9
0.0
2800 - 3799
5
37.6
21.3
42.6
28.7
-5.2
8.0
-4.3
14.5
-9.8
5.6
3800 - 4799
5
7.9
20.7
28.2
21.8
-12.9
24.2
-38.8
49.7
-0.2
8.8
4800 - 5799
0










ALL VEHICLES
11
24.5
24.6
33.9
24.4
-10.2
17.1
-17.0
39.9
-3.4
9.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-20

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
#
OF
HC

CO

CO 2
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
7.05
0.0
64.30
0.0
489.9
0.0
2.03
0.00
14.5
0.0
CHRYSLER
2
4.85
0.1
57.01
3.9
558.8
57.4
2.65
.30
13.4
1.0
FORD MOTOR CO.
3
7.09
2.5
39.46
12.0
578.2
126.9
3.57
.47
13.7
2.3
GENERAL MOTORS
5
6.29
1.9
49.89
22.6
464.8
75.9
2.41
1.03
16.0
2.2
IMPORTS
0










*MODEL YEAR











1968
1
4.19
0.0
70.64
0.0
587.1
0.0
1.82
0.00
12.5
0.0
1969
3
6.23
1.3
57.33
6.3
488.5
35.9
3.43
.60
14.9
0.7
1970
4
8.13
1.2
41.21
24. 9
470.8
48.4
2.24
1.03
15.9
1.3
1971
2
4.86
0.0
48.01
8.9
661 .9
88. 5
2.77
.47
11.8
1.2
1972
1
4.36
0.0
42.65
0.0
406.3
0.0
3.45
0.00
18.2
0.0
1973
0










1974
0










1975
0










^VEHICLE TYPE











AUTOMOBILE
11
6.32
1.8
49.65
17.3
515.1
93.6
2.74
.89
14.8
2.2
TRUCK
0










^VEHICLE OWNER











GSA
1
4.83
0.0
41.75
0.0
724.5
0.0
3. 11
0.00
11.0
0.0
PRIVATE OWNER
10
6.46
1.9
50. 44
18.0
494. 2
66. 1
2.70
.93
15.1
1.9
-CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PiiP
0










CNV/NO A.PMP
0










a.pmp/no CNV
4
6.81
1.7
44.70
22.4
434.2
38. 1
2.56
1.13
L6.9
1.1
NO CNV/NO APMP
7
6. 03
2.0
52.48
14.8
561.3
83.8
2.84
.80
13.5
1.5
"•^DISPLACEMENT











LESS THAN 151
1
4. 36
0.0
42.65
0.0
406. 3
• 0.0
3.45
0.00
18.2
0.0
151 - 250
1
7.53
0.0
60. 22
0.0
400. 6
0.0
1.04
0.00
17.1
0.0
251 - 350
6
7.28
1.7
46. 10
21.0
491.4
24.9
3.04
. 76
15.2
0.9
MORE THAN 350
3
4.64
0. 4
55.56
14.5
637.0
76.0
2.46
.65
12.1
0.9
*INERTIA WEIGHT











1800 - 2799
1
4.36
0.0
42.65
0.0
406. 3
0.0
3.45
0.00
18.2
0.0
2800 - 3799
5
7.96
1.1
45. 39
23.5
466.4
43. 1
2.47
1.03
15.8
1.1
3800 - 4799
5
5.07
0.9
55. 31
10.8
585.6
88.8
2.86
.83
13.0
1.5
4800 - 5799
0










ALL VEHICLES
11
6. 32
1.8
49.65
17.3
515.1
93.6
2.74
.89
14.8
2.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-21

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
-0. 19
0.0
53.60
0.0
59. 1
0.0
-0.45
0.00 -2.7
0.0
CHRYSLER
2
0. 54
1.2
53.39
27.4
-29.9
40.1
-0.02
.58 -1.0
0.0
FORD MOTOR CO.
3
0.44
1.2
37.48
29.7
-11.2
20.8
0.41
.25 -1.2
1.4
GENERAL MOTORS
5
0.48
2.7
45.81
33. 1
-52.6
40.0
0.02
.96 -0.4
1.3
IMPORTS
0









*MODEL YEAR










1968
1
2. 40
0.0
85.49
0.0
-1 14.5
0.0
0.40
0.00 -0.5
0.0
1969
3
1.60
2.3
44. 15
15.8
-15.6
27.4
-0.44
.74 -1.3
0.3
1970
4
-0.37
1.5
50.97
15.9
-5.4
51.1
0.37
.63 -1.6
1.5
1971
2
0.24
1.6
40. 60
45.5
-46. 7
16.4
0.54
.21 -0.3
1.0
1972
1
-1.56
0.0
-1. 17
0.0
-21.1
0.0
-0.80
0.00 1.1
0.0
1973
0









1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
11
0.42
1.9
45. 63
27.0
-27.0
45. 1
0.03
.69 -0.9
1.2
TRUCK
0









^VEHICLE OWNER










GSA
1
-0.90
0.0
8.44
0.0
-35.1
0.0
0.69
0.00 0.3
0.0
PRIVATE OWNER
10
0.55
1.9
49.34
25.3
-26.2
47.4
0.02
.69 -1.1
1.2
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
0.00
2.9'
35.89
28.3
-37.2
23.1
-0.07
1.08 -0.4
1.5
NO CNV/NO APMP
7
0. 66
1.2
51. 19
26. 7
-21.3
54.9
0. 16
.44 -1.2
1.1
^DISPLACEMENT










LESS THAN 151
1
-1 .56
0.0
-1.17
0.0
-21.1
0.0
-0.80
0.00 1.1
0.0
151 - 250
1
-0. 15
0.0
29.53
0.0
-65.0
0.0
0.97
0.00 0.6
0.0
251 - 350
6
0.58
2.2
51. 14
13.7
-0.6
34.5
-0.13
.68 -1.8
0.6
MORE THAN 350
3
0.96
1.7
55. 56
41.3
-69.3
40.8
0.49
.1-7 -0.4
0.7
*INERTIA WEIGHT










1800 - 2799
1
-1.56
0.0
-1.17
0.0
-21.1
0.0
-0.80
0.00 1.1
0.0
2800 - 3799
5
0.53
2.4
53.25
14.7
-13.8
48.0
0.06
.88 -1.6
1.3
3800 - 4799
5
0.71
1.3
47.36
31. 3
-41 .5
47.8
0.27
.42 -0.7
0.7
4800 - 5799
0









ALL VEHICLES
11
0.42
1.9
45.63
27.0
-27.0
45. 1
0.08
.69 -0.9
1.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-22

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
#
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
^VEHICLE MANUFACTURER









AMER. MOTORS
1
-2.8
0.0
45.5
0.0
10.8
0.0
-28.5
0.0
-23.3
0.0
CHRYSLER
2
7.9
19.8
46.8
14.8
-5.5
7.4
-2.0
22.3
-8.4
0.3
FORD MOTOR CO.
3
0.4
20.2
43.5
27.6
-1.6
3.0
10.4
6.7
-8.7
11. 1
GENERAL MOTORS
5
-5.4
42.9
42.8
30.4
-12.8
8.9
1.2
41.7
-3.4
8.0
IMPORTS
0









*MODEL YEAR











1968
1
36.4
0.0
54.8
0.0
-24.2
0.0
18.0
0.0
-3.9
0.0
1969
3
14.2
21 . ">
42.7 .
6.9
-3.9
6.8
-21.4
30. 3
-9.9
1.6
1970
4
-8.9
23.1
57.4
21.8
-3.0
12.5
12.3
32.2
-12.5
11.8
1971
2
-0.5
31.7
37.0
28.6
-7.9
4.0
16.0
3. 1
-2.8
8.3
1972
1
-55.7
0.0
-2.8
0.0
-5.5
0.0
-30.2
0.0
5.7
0.0
1973
0








1974
0










1975
0










^VEHICLE TYPE











AUTOMOBILE
11
-1.2
29.7
44.0
23.4
-6.3
9.8
0.4
29.5
-7.6
9.2
TRUCK
0









*VEHICLE OWNER











GSA
1
-22.9
0.0
16.8
0.0
-5. 1
0.0
18.2
0.0
3.1
0.0
PRIVATE OWNER
10
1.0
30.4
46.7
22.8
-6.4
10.3
-1.3
30.4
-8.6
8.9
"CONTROL OPTIONS(CONVERTER,AIR
PUMP)-







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
-15.9
41.5
39.9
34.3
-10.0
7.2
-3.0
46.9
-3.3
9.2
HO CNV/NO APMP
7
7.2
19.6
46.3
17.5
-4.2
11.0
2.4
18.3
-10.0
8.8
"DISPLACEMENT











LESS THAN 151
1
-55.7
0.0
-2.8
0.0
-5.5
0.0
-30.2
0.0
5.7
0.0
151 - 250
1
-2.0
0.0
32.9
0.0
-19.4
0.0
48.3
0.0
3.7
0.0
251 - 350
6
1.5
26.1
54. 1
17.4
-0.7
7.2
-10.5
28. 1
-13.9
5.9
MORE THAN 350
3
11.8
30.9
42.9
22. 7
-13.4
9.8
16.7
2.5
-3.2
5.9
*INERTIA WEIGHT











1800 - 2799
1
-55.7
0.0
-2.8
0.0
-5.5
0.0
-30.2
0.0
5.7
0.0
2800 - 3799
5
0.1
28.4
55.9
19.2
-4.7
11.5
-0.8
40.5
-12. 2
10.3
3800 - 4799 5
4800 - 5799 0
8.4 23.3 41.4 16.3 -8.0 10.1
7.8 15.0 -5.6 5.4
ALL VEHICLES 11 -1.2 29.7 44.0 23.4 -6.3 9.8 0.4 29.5 -7.6 9.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-23

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
//OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
1
5.06
0.0
75.18
0.0
562.4
0.0
1.92
0.00
12. 7
0.0
CHRYSLER
2
3.99
1.8
30. 71
30.1'
5 20.0
23.8
2.25
1.26
15.3
0.8
FORD MOTOR CO.
3
5. 33
1.3
38.22
24. 7
5 60 • 6
118.5
3.40
.49
14.3
3.1
GENERAL MOTORS
5
6.05
2.4
36.60
13.4
449.6
104. 1
2.61
1.12
17.4
3.3
IMPORTS
0










*MODEL YEAR











1968
1
5.77
0.0
43.61
0.0
599.3
0.0
3.69
0.00
12.9
0.0
1969
3
6. 14
0.8
54.98
9.6
508.1
24.8
3.46
.34
14.5
1.0
1970
4
6.33
2.3
38.86
27.8
449.3
96.8
1.95
.78
17.3
3.3
1971
2
3.49
1.1
20. 13
15.2
613.3
108. 2
2.44
1.53
13.8
2.9
1972
1
2. 78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
1973
0










1974
0










1975
0










"VEHICLE TYPE











AUTOMOBILE
11
5. 39
1.9
39.48
20.8
502.9
100.2
2.70
.98
15.8
3.0
TRUCK
0










-VEHICLE OWNER











GSA
1
4.29
0.0
30.88
0.0
689.8
0.0
3.53
0.00
11.8
0.0
PRIVATE OWNER
10
5.50
2.0
40. 34
21.7
4 84.2
82.9
2.62
.99
16.2
2.9
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6. 12
2.8
34.85
14.7
412. 1
71.5
2.34
1.09
18.5
2.5
NO CNV/NO APMP
7
4.97
1.3
42.12
24.2
554.8
74.4
2.90
.93
14.2
2. 1
^DISPLACEMENT











LESS THAN 151
1
2. 78
0.0
29.99
0.0
384 .3
0.0
2.94
0.00
20.2
0.0
151 - 250
1
9.67
0.0
46.09
0.0
325.8
0.0
0.96
0.00
20.7
0.0
251 - 350
6
5.68
0.8
45.72
24.3
499. 3
43.5
2.87
.75
15.3
2. 1
MORE THAN 350
3
4.25
1.5
27.96
17.3
608.6
76.9
2.86
1.30
13.5
2.1
*INERTIA WEIGHT











1800 - 2799
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
2800 - 3799
5
6.32
2.0
40.53
24.4
456. 7
85.4
2.24
.95
16.9
3.0
3800 - 4799
5
4.98
1.6
'40.33
21.4
572.8
74. 1
3.11
1.01
13.8
1.6
4800 - 5799
0










ALL VEHICLES
11
5.39
1.9
39.48
20.8
502.9
100.2
2.70
.98
15.8
3.0


AUTOMOTIVE
TESTING LABORATORIES,INC.






19900
E. COLFAX,
AURORA
, COLO.
, 80011




C-24

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.80
0.0
42.72
0.0
-13.4
0.0
-0.34
0.00 -1.0
CHRYSLER
2
1.40
3.1
79.69
53.7
8.9
6.4
0.38
1.54 -2.9
FORD MOTOR CO.
3
2.21
3.6
38.71
32.6
6.4
44.4
0.57
.32 -1.8
GENERAL MOTORS
5
0.72
2.7
59.10
37.9
-37.4
64.3
-0.18
1.20 -1.8
IMPORTS
0








*MODEL YEAR









1968
1
0.82
0.0
112.52
0.0
-126.7
0.0
-1.47
0.00 -0.9
1969
3
1.69
3.1
46.50
28. 7
-35. 2
49.1
-0.46
.91 -1.0
1970
4
1.42
3.6
53.32
15.'7
16.0
28.0
0.66
.67 -2.9
1971
2
1.60
2.8
68.48
69.5
1.9
3.3
0.87
.85 -2.3
1972
1
0.02
0.0
11.49
0.0
0.9
0.0
-0.29
0.00 -0.8
1973
0








1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
11
1.35
2.6
55.80
36. 1
-14.9
50.5
0. 11
.99 -1.9
TRUCK
0








*VEHICLE OWNER









GSA
1
-0.36
0.0
19.31
0.0
-0.4
0.0
0.27
0.00 -0.4
PRIVATE OWNER
10
1.52
2.7
59.44
35.8
-16.3
53.0
0.10
1.04 -2.1
-CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PHP
0








A.PMP/NO CNV
4
0. 69
3.1
45.75
27.0
-15.1
46.7
0. 14
1.10 -2.0
NO CNV/NO APMP
7
1.72
2. 5
61.54
41.2
-14.7
56.3
0.10
1.01 -1.9
^DISPLACEMENT









LESS THAN 151
1
0.02
0.0
11.49
0.0
0.9
0.0
-0.29
0.00 -0.8
151 - 250
1
-2.29
0.0
43.66
0.0
9.8
0.0
1.05
0.00 -2.9
251 - 350
6
2.18
2.9
51.52
22.0
-8.5
47.7
0.04
.93 -2.0
MORE THAN 350
3
1. 34
2.0
83. 16
55.4
-40.9
74.3
0.09
1.48 -1.8
*INERTIA WEIGHT









1800 - 279S
1
0.02
0.0
11.49
0.0
0.9
.0.0
-0.29
0.00 -0.8
2800 - 3799
5
2.16
3.6
58.11
17.3
-4'. 1
51.1
0.29
1.02 -2.6
3800 - 4799
5
0.80
1.7
62.35
49.0
-28.7
57.7
0.02
1.14 -1.4
4800 - 5799
0








ALL VEHICLES
11
1.35
2.6
55.80.
36. 1
-14.9
50.5
0.11
.99 -1.9
0.0
1.8
2.7
1.0
0.0
0.9
1.6
2.7
0.0
0.0
1.6
1.1
1.9
0.0
0.0
1.7
2.0
0.0
1.6
1.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-25

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—TUMEUP/PARADJ/DEV)

OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
^VEHICLE MANUFACTURER









AMER. MOTORS
1
26. 2
0.0
36.2
0.0
-2.4
0.0
-21.5
o.o
-8.5
0.0
CHRYSLER
2
20.0
52. 1
68.6
34.0
1.7
1.3
11.4
57.4
-24.3
16.3
FORD MOTOR CO.
3
18.9
33.8
47.7
29.6
1.2
8.8
14.6
8.7
-14.2
21. 3
GENERAL MOTORS
5
5.2
27.4
57.3
19.6
-8.4
14.4
-9.3
52.4
-11.3
6.1
IMPORTS
0










*MODEL YEAR











1968
1
12.4
0.0
72.1
0.0
-26.8
0.0
-66.2
0.0
-7.7
0.0
1969
3
12.5
31.0
43.5
19.2
-8.4
11.9
-24.0
34.1
-7.3
6.5
1970
4
12.6
37.4
60.4
21.4
3.5
5.3
22.1
31.3
-20.6
12.8
1971
2
23.9
46.7
65.5
38.3
0.4
0.6
29.5
31.7
-19.8
22. 7
1972
1
0. 7
0.0
27. 7
0.0
0.2
0.0
-10.9
0.0
-4.3
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
13.5
29.5
54.8
23. 1
-3.4
11.1
-0.2
40. 3
-14.2
12.7
TRUCK
0










*VEHICLE OWNER











GSA
1
-9.2
0.0
38.5
0.0'
-0.1
0.0
7.1
0.0
-3.8
0.0
PRIVATE OWNER
10
15.8
30.0
56.4
23. 7
-3.7
11.6
-0.9
42.4
-15.2
12.8
^CONTROL OPT IONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.3
31.3
53.6
20.5
-3.8
11.6
4.9
48.0
-12.2
6.7
NO CNV/NO APMP
7
19.4
29.1
55.5
26. 1
-3.2
11.7
-3.1
39.0
-15.3
15.5
^DISPLACEMENT











LESS THAN 151
1
0. 7
0.0
27.7
0.0
0.2
0.0
-10.9
0.0
-4.3
0.0
151 - 250
1
-31.0
0.0
48. 6
0.0
2.9
0.0
52.2
0.0
-16.6
0.0
251 - 350
6
19.8
27.9
53.9
22. 7
-2.4
10.9
-6.0
34. 7
-14.7
13.3
MORE THAN 350
3
20. 1
33.7
67.7
27.3
-8.7
15.7
-2.4
59.6
-15.8
17.5
*INERTIA WEIGHT











1800 - 2799
I
0.7
0.0
27.7
0.0
0.2
0.0
-10.9
0.0
-4.3
0.0
2800 - 3799
5
19. 1
35.5
60.7
18.6
-1.4
11.9
6.6
43.9
-18.3
12.3
3800 - 4799
5
10.6
28.7
54.3
27.7
-6.1
12.1
-4.8
44.8
-12.0
14.1
4800 - 5799
0










ALL VEHICLES
11
13.5
29.5
54.8
23.1
-3.4
11.1
-0.2
40.3
-14.2
12.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-26

-------
FXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
it
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
~VEHICLE.MANUFACTURER









AMER. MOTORS
1
5.06
0.0
75.18
0.0
562.4
0.0
1.92
0.00
12.7
0.0
CHRYSLER
2
3.99
1.8
30.71
30.1.
520.0
23.8
2.25
1.26
15.3
0.8
FORD MOTOR CO.
3
5.33
1.3
38.22
24.7
560.6
118.5
3.40
.49
14.3
3.1
GENERAL MOTORS
5
6.05
2.4
36.60
13.4
449.6
104.1
2.61
1.12
17.4
3.3
IMPORTS
0










*MODEL YEAR











1968
1
5.77
0.0
43.61
0.0
599.3
0.0
3.69
0.00
12.9
0.0
1969
3
6. 14
0. 8
54.98
9.6
508. 1
24.8
3.46
.34
14.5
1.0
1970
4
6. 33
2.3
38.86
27.8
449 . 3
96.8
1.95
.78
17.3
3.3
1971
2
3.49
1. 1
20. 13
15.2
613.3
108.2
2.44
1.53
13.8
2.9
1972
1
2.78
0.0
29.99
0.0
384. 3
0.0
2.94
0.00
20. 2
0.0
1973
0









1974
0










1975
0










^VEHICLE TYPE











AUTOMOBILE
11
5. 39
1.9
39.48
20.8
502.9
100.2
2.70
.98
15.8
3.0
TRUCK
0









^VEHICLE OWNER











GSA
1
4.29
0.0
30.88
0.0
689.8
0.0
3.53
0.00
11.8
0.0
PRIVATE OWNER
10
5. 50
2.0
40.34
21.7
484 . 2
82.9
2.62
.99
16.2
2.9
"CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A . PMP/NO CNV
4
6.12
2.8
34.85
14. 7
412.1
71.5
2.34
1.09
18.5
2.5
NO CNV/NO APMP
7
4.97
1.3
42. 12
24.2
554 .8
74.4
2.90
.93
14.2
2.1
-DISPLACEMENT











LESS THAN 151
1
2. 78
0.0
29.99
0.0
384. 3
0.0
2.94
0.00
20.2
0.0
151 - 250
1
9.67
0.0
46.09
0.0
325 .8
0.0
0.96
0.00
20.7
0.0
251 - 350
6
5.68
0.8
45. 72
24. 3
499.3
43.5
2.87
.75
15.3
2.1
MORE THAN 350
3
4. 25
1.5
27.96
17.3
608.6
76.9
2.86
1.30
13.5
2.1
* INERTIA WEIGHT











1300 - 2799
1
2.78
0.0
29.99
0.0
384. 3
0.0
2.94
0.00
20.2
0.0
2800 - 3799
5
6.32
2.0
40.53
24.4
4 56. 7
85.4
2.24
.95
16.9
3.0
3800 - 4799	5
4800 - 5799	0
4.98 1.6 40.33 21.4 572.8 74.1 3.11 1.01 13.8 1.6
ALL VEHICLES
11 5.39 1.9 39.48 20.8 502.9 100.2 2.70 .98 15.8 3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-27

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MAN U. TUN E-U P-T U N EU P / PA RAD J / D EV)
// OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.44
0.0
4 7.64
0.0
-33.2
0.0
-0.33
00
0
1
o
o
o
0.0
CHRYSLER
2
1.15
1 . 7
45.00
35.1
12.2
49.6
1.19
.90 -1.9
2.4
FORD MOTOR CO.
3
0.01
0.0
10. 71
6.7
34.3
50.3
0.87
.70 -1.3
1.6
GENERAL MOTORS
5
-2.10
2.5
11.92
14.4
47.6
64.3
0.22
1.00 -1.5
1.3
IMPORTS
0









*MODEL YEAR










1968
1
-1.50
0.0
18.73
0.0
133.2
0.0
1.18
0.00 -2.4
0.0
1969
3
0.03
0. 1
17.33
11.1
-18.6
11.0
0.36
.94 -0.2
0.2
1970
4
-1.64
3.4
16.81
23.7
25.9
53.8
0.67
.72 -1.3
1.2
1971
2
1. 18
1. 7
43.95
36.6
32.9
20.3
0.95
1.24 -2.1
2.1
1972
1
-1. 15
0.0
3. 56
0.0
85.6
0.0
-1.04
0.00 -3.3
0.0
1973
0









1974
0









1975
0









"VEHICLE TYPE










AUTOMOBILE
11
-0.61
2.2
20.86
21.8
30. 2
55.0
0.53
.91 -1.5
1.4
TRUCK
0









^VEHICLE OWNER










GSA
1
0.00
0.0
18.06
0.0
18.6
0.0
0.07
0.00 -0.7
0.0
PRIVATE OWNER
10
-0.68
2.4
21.13
22.9
31.4
57.8
0.57
.94 -1.5
1.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
-2.26
2.8
10.22
16.0
26.2
49. 5
-0.02
.98 -1.3
1.4
NO CNV/NO APMP
7
0. 32
1.2
26.93
23.3
32.5
61.6
0.84
.77 -1.5
1.5
^DISPLACEMENT










LESS THAN 151
1
-1.15
0.0
3.56
0.0
85.6
0.0
-1.04
0.00 -3.3
0.0
151 - 250
1
-6. 34
0.0
-8.88
0.0
45.2
0.0
0.94
0.00 -0.5
0.0
251 - 350
6
-0.02
1.0
21.35
15.1
0.4
46.0
0.47
.81 -0.9
1.1
MORE THAN 350
3
0.29
1.9
35.54
29.7
66.4
59.6
1.03
.89 -2.2
1.5
*INERTIA WEIGHT










1800 - 2799
1
-1.15
0.0
3.56
0.0
85.6
0.0
-1.04
0.00 -3.3
0.0
2800 - 3799
5
-1.28
3.0
18.80
21.0
15.3
52.2
0.40
.86 -1.1
1.1
3800 - 4799
5
0. 16
1.4
26.37
25.0
34.0
61.4
0.96
.67 -1.4
1.6
4800 - 5799
0









ALL VEHICLES
11
-0.61
2.2
20.86
21.8
30.2
55.0
0.53
.91 -1.5
1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-28

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)

// OF
HC

CO

C02
NOX
MPG


VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
22. 2
0.0
38.8
0.0
-6.3
0.0
-20.8
0.0
-6.6
0.0
CHRYSLER
2
22.7
33.8
58.0
42.6
1.7
9.1
36.3
29.9
-15.4
19.8
FORD MOTOR CO.
3
0.2
0.4
25.8
16.2
6.0
9.3
19.3
15.6
-9.2
10.6
GENERAL MOTORS
5
-67.0
73.7
21.5
29.9
8.6
10.9
4.1
42.3
-10.7
9.9
IMPORTS
0










*M0DEL YEAR











1968
1
-35. 1
0.0
.30.0
0.0
18.2
0.0
24.2
0.0
-23.0
0.0
1969
3
0.4
1.9
23.8
15.0
-3.9
2.4
5.0
25.3
-1.5
1.2
1970
4
-52. 3
95.8
25.7
34.3
5.7
10.5
21.6
30.0
-8.9
8.2
1971
2
23. 3
33.0
62.5
36.2
5.4
3.9
29.7
39.2
-17.8
16.4
1972
1
-70.6
0.0
10. 6
0. 0
18.2
0.0
-54. 7
0.0
-19.9
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
-24.2
63.5
30. 9
28.2
5. 3
9.7
11.8
33.6
-10.8
10.4
TRUCK
0










•"VEHICLE OWNER











GSA
1
0.0
0.0
36.9
0.0
2.6
0.0
1.9
0.0
-6. 2
0.0
PRIVATE OWNER
10
-26.7
66.4
30. 3
29. 7
5.5
10. 2
12.8
35. 2
-11.2
10.8
"CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PKP	0
CNV/NO A.PMP
0










A.PMP/NO CNV
4
-75.0
82.6
19.4
34. 0
6.2
11.0
-0.9
47.1
-7.6
8.3
NO CNV/NO APMP
7
4.7
25.0
37.5
24. 7
4.8
9.9
19.1
24.4
-12.6
11.6
^DISPLACEMENT











LESS THAN 151
1
-70.6
0.0
10.6
0.0
18.2
0.0
-54.7
0.0
-19.9
0.0
151 - 250
1
-190.4
0.0
-23.9
0.0
12.2
0.0
49.5
0.0
-2.6
0.0
251 - 350
6
-2.9
20.8
33.0
15. 5
-0.2
8.6
8.6
24. 6
-6.2
7.6
MORE THAN 350
3
3.8
41.0
51.7
31.8
9.6
7.9
27.8
27.9
-19.5
12.0
"INERTIA WEIGHT











1800 - 2799
1
-70.6
0.0
10.6
0.0
18.2
0.0
-54.7
0.0
-19.9
0.0
2800 - 3799
5
-41.3
86.5
27.8
30.1
3.4
10.5
12.5
33.0
-7.6
7.6
3800 - 4799
5
2. 1
29. 1
38.0
30. 1
4.6
9.0
24.5
20. 5
-12.1
13.3
4800 - 5799
0










ALL VEHICLES
11
-24.2
63.5
30.9
28.2
5.3
9.7
11.8
33.6
-10.8
10.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-29

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
# OF 11C	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968	1
1969	3
1970	4
1971	2
1972	1
1973	0
1974	0
1975	0
"-^VEHICLE TYPE
1
5.06
0.0
75. 18
0.0
562.4
0.0
1 .92
0.00
12.7
0.0
2
3.99
1.8
30. 71
30. 1
520.0
23.8
2.25
1.26
15.3
0.8
3
5.33
1.3
38.22
24.7
560.6
118.5
3.40
.49
14.3
3.1
5
0
6.05
2. A
36.60
13.4
449.6
104.1
2.61
1.12
17.4
3.3
5.77
0.0
43.61
0.0
599. 3
0.0
3.69
0.00
12.9
0.0
6. 14
0.8
54.98
9.6
508. 1
24.8
3.46
.34
14.5
1.0
6.33
2.3
38.86
27.8
449.3
96.8
1.95
.78
17.3
3.3
3.49
1.1
20. 13
15.2
613.3
108.2
2.44
1.53
13.8
2.9
2.78
0.0
29.99
0.0
384. 3
0.0
2.94
0.00
20.2
0.0
AUTOMOBILE
TRUCK
11
0
5. 39
1.9
39.48
20.8
502.9
100. 2
2. 70
.98
15.8
3.0
-VEHICLE OWNER











GSA
PRIVATE OWNER
1
10
4.29
5.50
0.0
2.0
30.88
40. 34
0.0
21 .7
689.8
484.2
0.0
82.9
3.53
2.62
0.00
.99
11.8
16.2
0.0
2.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
0
0
4
7
6. 12
4.97
2.8
1.3
34.85
42. 12
14.7
24.2
412. 1
554.8
71.5
74.4
2. 34
2.90
1.09
.93
18.5
14.2
2.5
2.1
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
1
6
3
2. 78
9.67
5.68
4.25
0.0
0.0
0.8
1.5
29.99
46.09
45.72
27.96
0.0
0.0
24.3
17.3
384.3
325.8
499.3
608. 6
0.0
0.0
43.5
76.9
2.94
0.96
2.87
2.86
0.00
0.00
.75
1.30
20.2
20.7
15.3
13.5
0.0
0.0
2.1
2.1
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
5
0
2. 78
6.32
4.98
0.0
2.0
1.6
29.99
40.53
40.33
0.0
24.4
21.4
384. 3
456.7
572.8
0.0
85.4
74.1
2.94
2.24
3.11
0.00
.95
1.01
20.2
16.9
13.8
0.0
3.0
1.6
ALL VEHICLES
11
5.39
1.9
39.48
20.8
502.9
100.2
2. 70
.98
15.8
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E,. COLFAX, AURORA, COLO. 80011
C-30

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
#
OF
HC
CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
^VEHICLE MANUFACTURER









AMER. MOTORS
1
1.99
0.0 -
-10.88
0.0
-72.5
0.0
0. 11
0.00
1.7
0.0
CHRYSLER
2
0.86
1.9
26.30
26.3
38.8
33. 7
0.40
.96
-1.9
1.8
FORD MOTOR CO.
3
1.77
2.8
1.23
14.6
17.6
47.6
0.17
.55
-0.6
2.0
GENERAL MOTORS
5
0.24
2.0
13.29
10.4
15.2
42.8
-0.20
.96
-1.4
1.5
IMPORTS
0










-MODEL YEAR











1968
1
-1.58
0.0
27.03
0.0
-12.2
0.0
-1.87
0.00
-0.5
0.0
1969
3
0.09
0.8
2.35
15.9
-19.6
30.0
-0.03
.26
0.4
1.0
1970
4
1.79
2.9
2.35
11.1
21 .5
65.4
0.29
.28
-1.4
2.3
1971
2
1.36
1.2
27.88
24. 1
48. 6
19. 7
0.33
1.06
-2.0
1.7
1972
1
1 .58
0.0
12.66
0.0
22.0
0.0
0.51
0.00
-1.9
0.0
1973
0










1974
0










1975
0










^VEHICLE TYPE











AUTOMOBILE
11
0.93
2.0
10. 17
16.8
12.2
46.6
0.04
.76
-1.0
1.7
TRUCK
0










^VEHICLE OWNER











GSA
1
0.54
0.0
10.87
0.0
34.7
0.0
-0.42
0-00
-0.8
0.0
PRIVATE OWNER
10
0.96
2.1
10. 10
17.7
9.9
48.5
O.OS
.79
-1.0
1.8
-CONTROL OPTION
S(CONVERT!
•.R.AIR
PUMP)







CNV/A.l'MP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
0.69
2.0
9.85
8.2
22.1
46. 2
0.21
. 24
-1.6
1.6
NO CKV/NO APMP
1
1.06
2.2
10. 35
20.8
6.5
49.5
-0.07
.95
-0.6
1.8
•^DISPLACEMENT











LESS THAN 151
1
1.58
0.0
12.66
0.0
22.0
0.0
0.51
0.00
-1.9
0.0
151 - 250
1
-2. 14
0.0
14. 13
0.0
74.8
0.0
0.08
0.00
-3.6
0.0
251 - 350
6
1.60
2.0
0. 38
12.0
-8.0
48.2
0.17
.33
-0. 1
1.6
MORE THAN 350
3
0. 38
1.9
27.60
17.0
28.4
37.8
-0.40
1.48
-1.5
1.5
-INERTIA WEIGHT











1800 - 2799
1
1.58
0-0
12.66
0.0
22.0
0.0
0.51
0.00
-1.9
0.0
2800 - 3799
5
1.63
2.6
4.86
11.2
9.6
62.5
0.23
.28
-1.0
2.1
3800 - 4799
5
0.09
1.4
14.98
22.6
12.8
38. 7
-0.25
1 .08
-0. 7
1.6
4800 - 5799
0










ALL VEHICLES
11
0.93
2.0
10. 17
16.8
12.2
46. 6
0.04
.76
-1.0
1.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-31

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
OF 11C	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
1
28.2
0.0
-16.9
0-0
-14.8
0.0
5.4
0.0
12.0
0.
CHRYSLER
2
17.4
38.7
47.8
49.3
6.7
5.3
17.2
38.2
-14.6
14.
FORD MOTOR CO.
3
19.5
28.1
8.9
34.8
2.7
9. 1
3.9
16.5
-4.8
13.
GENERAL MOTORS
5
2.5
33.6
19.8
21.2
3.9
10.1
-13.7
50.2
-8.0
8.
IMPORTS
0










*MODEL YEAR











1968
1
-37.7
0.0
38. 3
0.0
-2.1
0.0
-102.7
0.0
-3.7
0.
1969
3
0.0
12.2
2.0
29.1
-4.2
6.2
-1.7
7.9
2.3
6.
1970
4
19.8
33.9
5.5
25.8
5.1
14.3
11.4
6.2
-8. 1
14.
1971
2
28.0
23.8
54.4
40. 1
7.6
4.0
15.4
40.8
-16.0
12.
1972
1
36.2
0.0
29.7
0.0
5.4
0.0
14.8
0.0
-10.6
0.
1973
0







1974
0










1975
0










^VEHICLE TYPE











AUTOMOBILE
11
12.2
29. 2
18.6
31.5
2. 4
9.8
-1.5
37.0
-6.5
11.
TRUCK
0










-VEHICLE OWNER











GSA
1
11.2
0.0
26.0
0.0
4.8
0.0
-13.5
0.0
-7.1
0.
PRIVATE OWNER
10
12.3
30.8
17.8
33.1
2.2
10.2
-0.3
38. 7
-6.5
12.
^CONTROL OPTIONS (CONVERTER, AIR.
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
12.6
28.9
15.2
21.3
5.4
11.1
8.6
7.2
-9.1
9.
NO CNV/NO APMP
7
12.0
31.7
20.5
37.6
,0.7
9.4
-7.3
46.3
-5.1
13.
^DISPLACEMENT











LESS THAN 151
1
36.2
0.0
29. 7
0.0
5.4
0.0
14.8
0.0
-10.6
0.
151 - 250
1
-28.4
0.0
23.5
0.0
18.7
0.0
7.7
0.0
-21.0
0.
251 - 350
6
18.0
22.7
0.7
25.6
-1.8
9.8
5.5
10.2
-0.7
10.
MORE THAN 350
3
6. 1
41.5
49.0
29.8
4.4
6.3
-24.0
74. 1
-11.9
11.
*INERTIA WEIGHT










1800 - 2799
1
36.2
0.0
29.7
0.0
5.4
0.0
14.8
0.0
-10.6
0.
2800 - 3799
5
18.6
29.4
9.2
23.9
2.4
13.8
8.9
7.7
-6.1
13.
3800 - 4799
5
0.9
30.3
25.8
41.2
1.8
6.7
-15.2
54.0
-6. 1
12.
4800 - 5799
0










ALL VEHICLES
11
12.2
29.2
18.6
31.5
2.4
9.8
-1.5
37.0
-6.5
11.
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
0
7
1
6
0
8
6
7
0
6
0
2
5
1
0
0
7
5
0
4
3
6
C-32

-------
1968-1972 VEHICLES
DATA SET 3
18 VEHICLES
C-33

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)




(BASELINE)







it OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
5
4.70
1.6
80. 01
28.6
412.9
84.9
1.98
.65
16.5
2.9
CHRYSLER
3
5.88
1.2
116.79
20.0
517.5
23. 1
2.24
. 71
12.4
0.7
FORD MOTOR CO.
5
5.94
3.4
78. 16
27.3
498.0
121.9
3.04
1.37
14.2
2.5
GENERAL MOTORS
5
6.77
3.1
95. 71
45.5
412.2
57.6
2.43
.43
15.6
2.9
IMPORTS
0










*MODEL YEAR











1968
2
6.18
0.6
129.60
37.5
404.4
96. 5
1.91
.43
14.6
3.7
1969
4
6.86
3.4
103.75
17.1
447 . 1
72.6
2.51
1.38
14.1
1.3
1970
8
5.63
2.8
74.66
23.6
432.5
73.9
2.43
.80
16.1
2.7
1971
3
5.68
1.5
102.26
45.1
5 75 . 1
101.6
2.69
1.18
11.8
0.5
1972
1
2.80
0.0
41.48
0.0
385. 2
0.0
2.65
0.00
19.3
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
18
5.82
2.5
89.99
33.3
453 .8
91.3
2.44
.91
14.9
2.8
TRUCK
0










*VEHICLE OWNER











GSA
5
4.31
0.8
76.64
28.2
427.9
147.5
2.35
1.09
16.3
3.1
PRIVATE OWNER
13
6.40
2.7
95. 12
34.7
463.7
64.5
2.48
.87
14.4
2.6
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
0
4
14
6.81
5.53
3.6
2.2
80.60
92.67
35. 2
33.6
397. 1
470.0
53.8
94.6
2.49
2.43
.48
1.01
16.5
14.5
2.4
2.8
*DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
6
7
4
2.80
4.69
7. 16
5.91
0.0
1.6
3. 2
1.3
41.48
78.70
91.87
115.73
0.0
25.9
24.0
45.6
385.2
367.5
482.8
549.5
0.0
32.7
51.3
97.5
2.65
2.04
2.69
2.57
0.00
. 66
1.10
.99
19. 3
17.6
13.8
11.8
0.0
1.2
1.6
0.4
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
2
10
6
0
2.97
6.30
5.96
0.2
3.0
1.4
45.47
88.59
107.16
5.6
25.6
37.8
402.3
414.8
535.9
24.3
73.9
78.6
2.46
2.20
2.85
.27
.86
1.07
18.4
15.8
12.3
1.3
2.4
0.8
ALL VEHICLES
18
5.82
2.5
89.99
33. 3
453.8
91.3
2.44
.91
14.9
2.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-34

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
5
4.02
1.5
58.55
38.3
447.8
59.0
2.35
1.05
16.5
CHRYSLER
3
4.68
0.8
68.97
12.2
549.9
60.2
3.25
.42
13.3
FORD MOTOR CO.
5
4.59
1.4
50.71
31.1
518.8
126.1
3.67
1.40
15.1
GENERAL MOTORS
5
3.95
1.7
48.53
18.4
497.2
137.3
2.84
1.21
15.9
IMPORTS
0









4.16
0.2
63.51
1.7
556.8
248.5
3.34
2.17
14.2
5.2
5.62
1.3
77.09
9.7
473.0
44.0
3.20
1.54
14.5
0.8
3.91
1.3
42.91
33.2
452.0
64.4
2.88
1.15
17.2
3.0
4.37
0.7
61.22
15.9
625.9
71.5
3.22
.37
12.1
0.9
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
2.7
1.2
3.7
3.5
0
*MODEL YEAR
1968	2
1969	4
1970	8
1971	3
1972	1
1973	0
1974	0
1975	0
*VEHICLE TYPE
AUTOMOBILE	18 4.27 1.4 55.33 27.0 498.3 103.8 3.00 1.17 15.4 3.1
TRUCK	0
*VEHICLE OWNER
GSA	5 3.85 0.4 54.92 24.2 47].3 133.8 2.-74 1.09 16.1 3.1
PRIVATE OWNER 13 4.43 1.6 55.48 28.9 508.6 94.1 3.10 1.22 15.1 3.1
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CHV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 3.87 2.0 45.07 19.3 433.3 45.4 2.33 .50 17.2 2.2
NO CNV/NO APMP	14 4.38 1.2 58.26 28.7 515.4 110.4 3.19 1.24 14.9 3.1
*DISPLACEMENT
LESS THAN 151 1 1.63 0.0 33.55 0.0 469.9 0.0 1.90 0.00 16.8 0.0
2.0
1.7
1.1
3.1
2.4
1.5
151 - 250
6
3.54
0.4
46. 36
27.4
400.8
24.4
2.70
1.17
18.5
251 - 350
7
5.23
1.5
62.59
33.2
497.7
37.3
3.06
1.33
14.7
MORE THAN 350
4
4.34
0.5
61.50
13.0
652.5
79. 1
3.63
.88
11.7
*INERTIA WEIGHT










1800 - 2799
2
2.30
0.9
24.43
12.9
428.0
59.3
3.05
1.63
19.0
2800 - 3799
10
4.28
1.3
55.80
31.8
449.3
58.2
2.47
1.02
16.4
3800 - 4799
6
4.91
-1.1
64.83
11.3
603.2
99.1
3.87
.88
12.5
4300 - 5799
0









ALL VEHICLES
18
4.27
1.4
55.33
27.0
498.3
103.8
3.00
1.17
15.4
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-35

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)
It OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
5
4.02
1.5
58.55
38.3
447.8
59.0
2.35
1.05
16.5
2.7
CHRYSLER
3
4.68
0.8
68.97
12.2
549.9
60.2
3.25
.42
13.3
1.2
FORD MOTOR CO.
5
4.59
1.4
50.71
31.1
518.8
126.1
3.67
1.40
15.1
3.7
GENERAL MOTORS
5
3.95
1.7
48.53
18.4
497.2
137.3
2.84
1.21
15.9
3.5
IMPORTS
0









4.16
0.2
63.51
1.7
556.8
248.5
3.34
2.17
14.2
5.2
5.62
1.3
77.09
9.7
473.0
44.0
3.20
1.54
14.5
0.8
3.91
1.3
42.91
33.2
452.0
64.4
2.88
1.15
17.2
3.0
4.37
0.7
61.22
15.9
625.9
71.5
3.22
.37
12.1
0.9
1.63
0.0
33.55
0.0
469.9
0.0
1.90
0.00
16.8
0.0
*MODEL YEAR
1968	2
1969	4
1970	8
1971	3
1972	1
1973	0
1974	0
1975	0
^VEHICLE TYPE
AUTOMOBILE	18 4.27 1.4 55.33 27.0 498.3 103.8 3.00 1.17 15.4 3.1
TRUCK	0
*VEHICLE OWNER
GSA	5 3.85 0.4 54.92 24.2 471.3 133.8 2.74 1.09 16.1 3.1
PRIVATE OWNER	13 4.43 1.6 55.48 28.9 508.6 94.1 3.10 1.22 15.1 3.1
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV
NO CNV/NO APMP
4
14
3.87
4.38
2.0
1.2
45.07
58.26
19.3
28.7
438.3
515.4
45.4
110.4
2.33
3.19
.50
1.24
17.2
14.9
2.2
3.1
*DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
6
7
4
1.63
3.54
5.23
4.34
0.0
0.4
1.5
0.5
33.55
46.36
62.59
61.50
0.0
27.4
33.2
13.0
469.9
400.8
497. 7
652.5
0-0
24.4
37.3
79.1
1.90
2.70
3.06
3.63
0.00
1.17
1.33
.88
16.8
18.5
14.7
11.7
0.0
2.0
1.7
1.1
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
2
10
6
0
2.30
4.28
4.91
0.9
1.3
1.1
24.43
55.80
64.83
12.9
31.8
11.3
428.0
449.3
603.2
59.3
58.2
99.1
3.05
2.47
3.87
1.63
1.02
.88
19.0
16.4
12.5
3.1
2.4
1.5
ALL VEHICLES
18
4.27
1.4
55.33
27.0
498.3
103.8
3.00
1.17
15.4
3.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-36

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-MANU. TUNE-UP)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
5
0.69
0.6
21.46
17.7
-35.0
31.5 -0.37
.44 0.0
0.9
CHRYSLER
3
1.20
1.9
47.81
26.2
-32.3
63.9 -1.01
.57 -0.9
0.5
FORD MOTOR CO.
5
1.35
2.8
27.45
25.2
-20.8
32.9 -0.63
.80 -0.9
1.8
GENERAL MOTORS
5
2.82
1.6
47. 18
31.7
-85.0
104.1 -0.40
1.34 -0.2
2.2
IMPORTS
0







*MODEL YEAR









1968
2
2.02
0.4
66.10
39.2
-152.4
152.0 -1.42
1.74 0.4
1.6
1969
4
1.24
2.5
26.65
16.1
-25.8
43.4 -0.69
.41 -0.4
0.9
1970
8
1.72
2.2
31. 75
22.2
-19.5
35.7 -0.45
.74 -1.1
1.7
1971
3
1.32
1.7
41.04
36.9
-50.7
36.2 -0.52
.82 -0.3
0.5
1972
1
1.17
0.0
7.93
0.0
-84.7
0.0 0.75
0.00 2.5
0.0
1973
0






1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
18
1.55
1.9
34.66
26. 1
-44.5
65.0 -0.56
.84 -0.5
1.5
TRUCK
0






*VEHICLE OWNER









C-SA
5
0.46
0.8
21.72
15.5
-43.4
15.7 -0.39
.45 0.2
0.9
PRIVATE OWNER
13
1.97
2.1
39.63
28.1
-44.9
76.8 -0.62
.96 -0.7
1.6
¦'CONTROL OPTIONS (CONVERTER, AIR
PUMP)





CNV/A.PMP
0








CfiV/NO A. PMP
0








A.PMP/NO CNV
4
2.95
1.8
35.53
20.8
-41.2
41.3 0.16
.55 -0.7
2.2
NO CNV/NO APMP
14
1.15
1.8
34.41
28.2
-45.4
71.6 -0.76
.81 -0.4
1.3
*DISPLACEMENT









LESS THAN 151
1
1.17
0.0
7.93
0.0
-84.7
0.0 0.75
0.00 2.5
0.0
151 - 250
6
1.15
1.6
32.34
13.9
-33.3
33.9 -0.66
.73 -0.9
1.9
251 - 350
7
1.94
2.6
29.28
23.6
-14.9
37.3 -0.37
.53 -0.9
0.9
MORE THAN 350
4
1.57
1.5
54.23
40.0
-103.0
108.7 -1.05
1.26 0.1
1.0
*INERTIA WEIGHT









1800 - 2799
2
0.67
0.7
21.04
18.5
-25.7
83.5 -0.59
1.90 -0.6
4.3
2800 - 3799
10
2.03
2.2
32.78
21.0
-34.6
28.2 -0.27
.40 -0.6
1.2
3800 - 4799
6
1.05
1.5
42.32
36. 1
-67. 3
102.8 -1.02
.99 -0.2
1.0
4800 - 5799
0








ALL VEHICLES
18
1.55
1.9
34.66
26.1
-44.5
65.0 -0.56
.84 -0.5
1.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-37

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES-HOT START DATA)
(BASEL1NE-MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
5
14.3
10.2
30.8
22.1
-9.7
7.8
-15.2
17.0
-0.0
5.0
CHRYSLER
3
16.4
30.5
39.3
17. 1
-6.4
12.7
-54.1
42.3
-7.1
3.5
FORD MOTOR CO.
5
12.3
25.5
35.6
32.2
-4.4
8.2
-27.2
34.8
-5.8
11.3
GENERAL MOTORS
5
40.8
9.9
45.0
16.6
-19.8
21.6
-20.0
58.8
-1.5
13.2
IMPORTS
0










*MODEL YEAR











1968
2
32.5
3.8
48.7
16.1
-34.2
29.4
-65.6
76.1
4. 1
11.7
1969
4
9.3
25.0
24.7
10.9
-6.9
10.2
-30.4
15.8
-3.3
6.8
1970
8
23.3
21.4
45.3
25.0
-5.2
8.8
-18.2
31.9
-7.3
9.7
1971
3
18.4
27.3
32.4
27.7
-9.6
7.9
-34.9
54.7
-2.7
4.3
1972
1
41.8
0.0
19.1
0.0
-22.0
0.0
28.3
0.0
12.9
0.0
1973
0








1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
18
21.4
21.5
37.5
22. 1
-10.5
14.1
-26.4
39.5
-3.2
9.3
TRUCK.
0










*VEHICLE OWNER











GSA
5
8.7
15.4
27.6
19.9
-11.5
5.5
-19.8
17.4
1.2
5.1
PRIVATE OWNER
13
26.3
.22.0
41.3
22.5
-10.1
16.5
-28.9
45.7
-4.9
10.1
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
42.1
10.8
41.2
16.5
-11.0
10.4
4.8
22.3
-4.9
12.4
NO CNV/NO APMP
14
15.5
20.2
36.4
23.9
-10.3
15.3
-35.3
39.3
-2.7
8.8
*DISPLACEMENT











LESS THAN 151
1
41.8
0.0
19.1
0.0
-22.0
0.0
28.3
0.0
12.9
0.0
151 - 250
6
18.9
20.7
43.8
20. 2
-9.6
9.0
-30.7
31.1
-5. 1
10.7
251 - 350
7
20.0
24.4
33.6
24.0
-3.6
8.2
-13.5
20.7
-6.3
6.7
MORE THAN 350
4
22.6
23.8
39.3
26.5
-21.0
23.6
-56.0
61.5
1.1
8.3
*INERTIA WEIGHT










1800 - 2799
2
23.6
25.7
44.1
35.3
-7.0
21.2
-28.6
80.4
-4.0
23.9
2800 - 3799
10
25.4
20.7
38.8
21.7
-9.2
7.1
-12.6
16.7
-4.3
7.7
3800 - 4799
6
14.1
24.0
33.0
22.8
-13.8
21.8
-48.5
50.4
-1.1
8.1
4800 - 5799
0










ALL VEHICLES
18
21.4
21.5
37.5
22.1
-10.5
14.1
-26.4
39.5
-3.2
9.3
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFA/i, AURORA, COLO. 80011
C-38

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
it
OF
HC

CO

CO 2
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
*VEHICLE MANUFACTURER








AMER. MOTORS
5
4.04
0.9
42.13
24.2
460.0
59.7
2.00
.80
16.8
CHRYSLER
3
3.86
1.3
30.28
21.3
545.3
47.0
2.26
.89
14.7
FORD MOTOR CO.
5
4.51
1.5
34.11
20.9
499.2
119.2
2.99
.74
16.3
GENERAL MOTORS
5
6.05
2.4
36.60
13.4
449.6
104.1
2.61
1.12
17.4
IMPORTS
0









*MODEL YEAR










1968
2
5.26
0.7
50.87
10.3
516.1
117.6
2.35
1.90
14.7
1969
4
5.47
1.5
51.78
10.1
486.7
47.4
3.07
.82
15.3
1970
8
4.85
2.2
30.81
21.2
436. 7
67.5
2.21
.73
18.1
1971
3
3.52
0.8
23.24
12.0
607.5
77. 2
2.39
1.09
13.7
1972
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
1973
0









1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
18
4.70
1.8
36.39
18.8
482.2
90.7
2.49
.91
16.5
TRUCK
0









* VEHICLE OWNER










GSA
5
4.01
0.5
36.82
15.2
477.5
118.8
2.40
.99
16.7
PRIVATE OWNER
13
4.96
2.0
36.23
20.6
- 484.0
83.4
2.52
.92
16.4
*CONTP,OL OPTIONS (COKVERTE
R, AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
6.12
2.8
34 .'85
14.7
412.1
71.5
2.34
1.09
18.5
NO CNV/NO APMP
14
4. 29
1.2
36.83
20.3
502.2
87.4
2.53
.89
15.9
^DISPLACEMENT










LESS THAN 151
1
2.78
0.0
29.99
0.0
384. 3
0.0
2.94
0.00
20.2
151 - 250
6
4.75
2.5
35.50
17.3
402.6
40. 1
2.04
.91
18.9
251 - 350
7
5.27
1.3
42.68
23.6
494.0
42.1
2.67
.86
15.6
MORE THAN 350
4
4.08
1.3
28.33
14.1
605.5
63.1
2.72
1.10
13.5
*INERTLA WEIGHT










1800 - 2799
2
2.93
0.2
21.85
11.5
388.1
5.5
2.88
.08
20.6
2800 - 3799
10
5.02
1.9
38.03
19.7
444.4
59.6
2.12
.84
17.3
3800 - 4799
6
4.75
1.5
38.51
19.7
576. 7
66.9
2.97
.96
13.7
4S00 - 5799
0








ALL VEHICLES
18
4.70
1.8
36.39
18.8
482.2
90.7
2.49
.91
16.5
2.5
1.1
3.7
3.3
2.5
1.8
2.5
2.0
0.0
2.9
2.9
3.0
2.5
2.8
0.0
1.7
2.1
1.7
0.6
2.2
1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-39

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
5
0.67
0. 8
37.88
6.4
-47. 1
34.7 -0.02
.36 -0.3
0.8
CHRYSLER
3
2.03
2.4
86.50
39.7
-27.8
63.6 -0.03
1.30 -2.4
1.6
FORD MOTOR CO.
5
1.43
2.7
44.05
26.8
-1.2
43.6 0.06
.75 -2.1
2.1
GENERAL MOTORS
5
0.72
2. 7
59.10
37.9
-37.4
64.3 -0.18
1.20 -1.8
1.0
IMPORTS
0






0.93
0.1
78.73
47.8
-111.8
21.1 -0.43
1.46 -0.1
1.2
1.39
2.6
51.97
25.8
-39.6
41.0 -0.57
.77 -1.2
0.8
0.78
2.5
43.85
14.7
-4.2
38.5 0.22
.66 -2.0
1.8
2.16
2.2
79.03
52.5
-32.4
59.5 0.30
1.16 -2.0
2.0
0.02
0.0
11.49
0.0
0.9
0.0 -0.29
0.00 -0.8
0.0
*MODEL YEAR
1968	2
1969	4
1970	8
1971	3
1972	1
1973	0
1974	0
1975	0
*VEHICLE TYPE
AUTOMOBILE	18 1.12 2.1 53.59 31.7 -28.A 50.2 -0.04 .84 -1.6 1.6
TRUCK 0
* VEHICLE OWNER
GSA	5 0.30 0.5 39.83 18.6 -49.7 37.0 -0.04 .55 -0.3 1.0
PRIVATE OWNER	13 1.44 2.5 58.89 34.6 -20.3 53.5 -0.04 .95 -2.0 1.5
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
0








A.PMP/NO CNV
4
0.69
3. 1
45.75
27.0 '
-15.1
46.7 0.14
1.10 -2.0
1.1
NO CNV/NO APMP
i 4
1.24
1.9
55.83
33.4
-32.3
52.2 -0.10
.79 -1.4
1.7
*DISPLACEMENT









LESS THAN 151
1
0.02
0.0
11.49
0.0
0.9
0.0 -0.29
0.00 -0.8
0.0
151 - 250
6
-0.06
1.2
43.21
13.6
-35.1
47.5 0.00
.72 -1.3
1.7
251 - 350
7
1.89
2.7
49. 19
21.0
-11.2
44.1 0.01
.85 -1.8
1.6
MORE THAN 350
4
1.82
1.9
87.40
46.0
-56.0
67.7 -0.14
1.29 -1.7
1.7
*INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
ALL VEHICLES 18 1.12 2.1 53.59 31.7 -28.4 50.2 -0.04 .84 -1.6 1.6
2
0.03
0.0
23.62
17.2
14.2
18.8 -0.42
.19 -2.2
1.9
10
1.28
2.6
50.56
17.3
-29.6
47.5 0.08
.80 -1.5
1.7
6
0
1.21
1.8
68.64
46.5
-40.8
59.4 -0.12
1.08 -1.4
1.5
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-40

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT STAK1 DATA)
(BASELINE—TUNEUP/FARADJ/DEV)
it
OF
HC

CO

C02
NOX MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER







AMER. MOTORS
5
11.4
10.9
50.5
13.5
-12.9
11.0
-0.3
22.2 -2.2
5.3
CHRYSLER
3
29.3
40.2
71.5
24.6
-5.7
12.8
-11.7
57.0 -19.6
14.1
FORD MOTOR CO.
5
14.1
25.1
55.5
23.8
-0.8
10.0
-13.3
44.2 -14.7
15.4
GENERAL MOTORS
5
5.2
27.4
57.3
19.6
-8.4
14.4
-9.3
52.4 -11.3
6.1
IMPORTS
0









*M0DEL YEAR










1968
2
15.1
3.8
57.8
20.1
-27.8
1.4
-14.5
73.2 -1.7
8.5
1969
4
12.6
25. 3
48.1
18. 1
-9.9
10.2
-39.4
41.5 -8.3
5.7
1970
8
8.1
25.2
60.8
16.3
-1.6
9.5
5.8
27.7 -13.7
12.8
1971
3
31.8
35.8
69.5
27.9
-6.6
12.0
0.4
55.2 -16.6
16.9
1972
1
0.7
0.0
27.7
0.0
0.2
0.0
-10.9
0.0 -4.3
0.0
1973
0








1974
0









1975
0









^VEHICLE TYPE










AUTOMOBILE
18
13.4
24.7
57.3
19.7
-7. 1
11.9
-8.3
40.4 -11.1
11.6
TRUCK
0









*VEHICLE OWNER










GSA
5
5.8
11.0
51.5
13.4
-14.0
11.0
-9. 7
45.5 -2.4
6.0
PRIVATE OWNER
13
16.4
28. 1
59.5
21.7
—4 .4
11.5
-7.8
40.2 -14.5
11.6
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
3.3
31. 3
53.6
20.5
-3.8
11.6
4.9
48.0 -12.2
6.7
NO CNV/NO AFHP
14
16. 3
23.0
58. 3
20.1
-8.0
12.3
-12.1
39.1 -10.8
12.8
*DISPLACEMENT










LESS THAN 151
1
0.7
0.0
27.7
0.0
0.2
0.0
-10.9
0.0 -4.3
0.0
151 - 250
6
1.4
17.5
56.7
12.9
-10.1
13.5
-4.7
48.8 -7.4
9.9
251 - 350
7
17.8
26. 0
54.6
20.8
-2.9
10.0
-6.5
31.7 -13.4
12.6
MORE THAN 350
4
27.0
30.8
70.1
22.8
-11.6
14.1
-16.3
56.1 -14.4
14.5
*INERTIA WEIGHT










1800 - 2799
2
1.0
0.4
50.0
31.5
3.4
4.5
-17.8
9.7 -12.1
10.9
2800 - 3799
10
13.9
24.8
58.2
14.8
-8.3
12.4
-3.2
43.0 -10.6
12.3
3800 - 4799
6
16.8
29.8
58. 1
26.5
-8.5
12.3
-13.7
45.6 -11.7
12.6
4800 - 5799
0









ALL VEHICLES
18
13.4
24.7
57. 3
19.7
-7.1
11.9
-8.3
40.4 -11.1
11.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-41

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
it OF HC	CO	C02	NOX	MPG
VEH, MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
5
4.04
0.9
42.13
24.2
460.0
59.7
2.00
.80
16.8
2.5
CHRYSLER
3
3.86
1.3
30.28
21.3
545.3
47.0
2.26
.89
14.7
1.1
FORD MOTOR CO.
5
4.51
1.5
34. 11
20.9
499.2
119.2
2.99
.74
16.3
3.7
GENERAL MOTORS
5
6.05
2.4
36.60
13.4
449.6
104.1
2.61
1.12
17.4
3.3
IMPORTS
0










*MODEL YEAR











1968
2
5.26
0.7
50.87
10.3
516.1
117.6
2.35
1.90
14.7
2.5
1969
4
5.47
1.5
51.78
10.1
486.7
47.4
3.07
.82
15.3
1.8
1970
8
4.85
2.2
30.81
21.2
436.7
67.5
2.21
.73
18.1
2.5
1971
3
3.52
0.8
23.24
12.0
607.5
77.2
2.39
1.09
13.7
2.0
1972
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
18
4.70
1.8
36.39
18.8
482.2
90.7
2.49
.91
16.5
2.9
TRUCK
0










* VEHICLE OWNER











GSA
5
4.01
0.5
36.82
15.2
477.5
118.8
2.40
.99
16.7
2.9
PRIVATE OWNER
13
4.96
2.0
36.23
20.6
484.0
83.4
2.52
.92
16.4
3.0
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.12
2.8
34.85
14.7
412.1
71.5
2.34
1.09
18.5
2.5
NO CNV/NO APMP
14
4.29
1.2
36.83
20.3
502.2
87.4
2.53
.89
15.9
2.8
~DISPLACEMENT











LESS THAN 151
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
151 - 250
6
4.75
2.5
35. 50
17.3
402.6
40.1
2.04
.91
18.9
1.7
251 - 350
7
5.27
1.3
42.68
23.6
494.0
42. 1
2.67
.86
15.6
2.1
MORE THAN 350
4
4.08
1.3
28.33
14.1
605. 5
63.1
2.72
1.10
13.5
1.7
~INERTIA WEIGHT











1800 - 2799
2
2.93
0.2
21.85
11.5
388.1
5.5
2.88
.08
20.6
0.6
2800 - 3799
10
5.02
1.9
38.03
19.7
444.4
59.6
2.12
.84
17.3
2.2
3800 - 4799
6
4.75
1.5
38.51
19.7
576.7
66.9
2.97
.96
13.7
1.4
4800 - 5799
0










ALL VEHICLES
18
4.70
1.8
36. 39
18.8
482.2
90.7
2.49
.91
16.5
2.9
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-42

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
If OF _ HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
5 -0.02
0.8
16.42
20.6
-12.2
30.8
0.35
.56 -0.3
1.1
CHRYSLER
3 0.82
1.3
38.69
27.1
4.5
37.5
0.99
.73 -1.5
1.9
FORD MOTOR CO.
5 0.08
0.3
16.60
19.3
19.6
40.9
0.68
.89 -1.2
1.5
GENERAL MOTORS
5 -2.10
2.5
11.92
14.4
47.6
64.3
0.22
1.00 -1.5
1.3
IMPORTS
0








*M0DEL YEAR









1968
2 -1.09
0. 6
12.63
8.6
40.7
130.9
0.99
.28 -0.5
2.7
1969
4 0. 15
0.3
25. 31
18.4
-13. 7
' 13.3
0.12
.90 -0.8
1.1
1970
15 -0.94
2. 3
12. 10
18.4
15.2
38.3
0.67
.63 -0.9
1.0
1971
3 0.84
1.3
37.99
27.9
18.3
29.1
0.82
.91 -1.6
1.7
1972
1 -1.15
0.0
3.56
0.0
85.6
0.0
-1.04
0.00 -3.3
0.0
1973
0








1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
IS -0.43
1.7
18.93
20. 2
16.0
48.0
0.51
.80 -1.1
1.4
TRUCK
0








*VEHICLE OWNER









GSA
5 -0.16
0.5
18. 10
21 .0
-6.3
27.6
0. 34
.61 -0.5
1.4
PRIVATE OWNER
13 -0.53
2.1
] ?. 25
20.8
24. 6
52.2
0.58
.87 -1.3
1.3
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)






CNV/A.PMP
0








CNV/NO A.PMP
0








A. PI IP/NO CNV
4 -2.26
2.8
10.22
16.0
26.2
49.5
-0.02
.98 -1.3
1.4
NO CNV/NO APMP
14 0.09
0.9
21.42
21.1
13.1
49.1
0.67
.71 -1.0
1.4
^DISPLACEMENT
LESS THAN
151
1 -1.15
0.0
3.56
0.0
85.6
0.0
-1.04
0.00 -3.3
0.0
151 - 250

6 -1.21
2.5
10.87
22.2
-1.8
31.5
0.66
.67 -0.4
1.3
251 - 350

7 -0.05
0.9
19.91
14.3
3.7
42.9
0.38
.77 -l.o
1.0
MORE THAN
350
4 0.26
1.6
33.17
24.7
47.0
62.2
0.91
.76 -1.8
1.4
* INERTIA WEIGHT
1800 - 2799
2 -0.64
0.7
2.58
1.4
39.8
64.7
0.17
1.71 -1.6
2.5
2800 - 3799
10 -0.74
2.1
17.77
19.9
5.0
41.2
0.35
.72 -0.9
1.3
3800 - 4799
6 0.16
1.2
26.32
22.4
26. 5
57.9
0.90
.62 -1.3
1.4
4S00 - 5799
0








ALL VEHICLES
18 -0.43
1.7
18.93
20.2
16.0
48.0
0.51
•H
1
o
00
1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-43

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
#
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
5
-4.3
15.2
23.0
31.6
-3.0
7.3
11.1
26.4
-2.4
6.7
CHRYSLER
3
16. 7
26.1
54.3
30.8
0.5
6.7
30.8
23.1
-11.8
15.3
FORD MOTOR CO.
5
1.9
6. 6
28.4
19.5
3.3
7.6
9.4
32.2
-8.5
9.6
GENERAL MOTORS
5
-67.0
73.7
21.5
29.9
8.6
10.9
4.1
42.3
-10.7
9.9
IMPORTS
0










*MODEL YEAR











1968
2
-26. 1
12.8
20.1
14.1
2.3
22.5
34.1
13.9
-7.5
22.0
1969
4
3.6
6.5
31.3
19.4
-2.9
2.9
-7.2
31.9
-5.1
7.3
1970
8
-30.0
67.1
22.5
32.3
3.3
7.7
18.9
23.3
-6.0
6.8
1971
3
17.1
25.7
57.3
27. 2
3.0
5.0
26.4
28.3
-13.4
13.8
1972
1
-70.6
0.0
10.6
0.0
18.2
0.0
-54.7
0.0
-19.9
0.0
1973
0










1974
0










1975
0










* VEHICLE TYPE











AUTOMOBILE
18
-16.5
50.1
29.3
28.0
2.6
9.0
12.0
31.2
-8.0
9.9
TRUCK
0










* VEHICLE OWNER











GSA
5
-4.5
11.6
27. 1
34.4
-2.1
6.7
8.8
33.1
-3.9
8.9
PRIVATE OWNER
13
-21.1
58.6
30.2
26.8
4.4
9.3
13.2
31.7
-9.5
10.1
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
-75.0
82.6
19.4
34.0
6.2
11.0
-0.9
47.1
-7.6
8.3
NO CNV/NO APMP
14
0.2
18.9
32.1
26.9
1.5
8.5
15.6
26.4
-8.1
10.5
*DISPLACEMENT











LESS THAN 151
1
-70.6
0.0
10.6
0.0
18.2
0.0
-54.7
0.0
-19.9
0.0
151 - 250
6
-36.2
76.2
14. 2
36.1
-0.4
8.3
20.7
33.8
-2.5
8.1
251 - 350
7
-3.6
19.1
32.8
14.2
0.5
8.1
6.1
23.5
-6.5
7.0
MORE THAN 350
4
4.0
33.5
50.5
26.0
6.8
8.6
25.9
23.1
-15.8
12.3
*INERTIA WEIGHT











1800 - 2799
2
-37.5
46.8
10.6
0.1
8.3
14.0
-11.0
61.9
-9.5
14.7
2800 - 3799
10
-23.7
61.0
26.9
30.3
0.8
8.9
9.5
31.8
-5.9
8.1
3800 - 4799
6
2.5
26.1
39.5
27.2
3.5
8.4
23.7
18.4
-10.8
12.3
4800 - 5799
0









ALL VEHICLES
18
-16.5
50.1
29.3
28.0
2.6
9.0
12.0
31.2
-8.0
9.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
C-44

-------
APPENDIX D
TABLES OF TEST RESULTS
DATA SET 1 PAGE D-2
D-l

-------
1968-1972 VEHICLES
DATA SET 1
11 VEHICLES
PARA. ADJ.
DEVICE
MANU. TUNE-UP
PARA. ADJ.
DEVICE
D-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(BASELINE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
11,
.46
0.
,0
153.
.54
0.
.0
576.
.0
0.
0
1.
.53
0.00
10.4
0.
,0
CHRYSLER
2
6.
.60
0.
,2
125.
,43
5.
.9
545.
,4
25.
.0
2.
.60
.43
11.6
o.
,5
FORD MOTOR CO.
3
7.
,62
3.
,4
82.
.69
21.
,9
587.
,7
113.
.0
3.
.96
.33
12.0
1.
, 1
GENERAL MOTORS
5
7,
.93
4.
.2
111.
,96
44.
,5
424.
,6
58.
3
2,
.34
.39
14.6
2.
.7
6.84
0.0
161.97
0.0
492.4
0.0
2.34
0.00
11.6
0.0
9.72
4.4
121.49
28. 1
486. 1
65. 1
2.88
1 . 24
12.5
0.5
9.30
2.2
111.70
28.0
478.9
99.6
2.51
1.07
13.4
2.7
5.33
1.9
93.53
51. 1
640.6
109.6
3.27
.52
11.0
0.3
3.22
0.0
51.96
0.0
405. 2
0.0
2.73
0.00
17.9
0.0
IMPORTS	0
"MODEL YEAR
1968	1
1969	3
1970	4
1971	2
1972	1
1973	0
19 74	0
1975	0
AVEHICLE TYPE
AUTOMOBILE	11 7.93 3.3 110.21 36.8 504.8 100.5 2.76 .88 13.0 2.4
0.0
2.4
TRUCK
0









•-VEHICLE OWNER










GSA
1
1
£.03
0.0
57.43
0.0
718.1
0. 0
3.64
0.00
10.8
PRIVATE OWNER
10
8.32
3.2
1L5.48
34. 1
4S3. 5
75. 2
2.67
.87
13.2
"CONTROL OPT10PS
(CO:
aVLRTE
R, AIR
. PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
8. 20
4.8
99. 4S
40.0
407.6
51 .1
2.34
.45
15.3
NO CNV/N'O APMP
7
7.77
2.6
116.35
36.6
560.3
74.9
2.99
1.00
11.6
^DISPLACEMENT










LESS THAN 151
1
3.22
0.0
51.96
0.0
405.2
0.0
2.73
0.00
17.9
151 - 250
1
7.94
0.0
101.14
0.0
344.6
0.0
1.87
0.00
16.8
251 - 350
6
9.74
3.1
118.35
27. 7
504.9
57.0
2.80
1.09
12.4
MORE THAN 350
3
5.87
1.6
116.35
53.5
591.2
115.4
2.96
.65
11.2
"INERTIA WEIGHT
1800 - 2799
1
3.22
0.0
51.96
0.0
405. 2
0.0
2.73
0.00
17.9
2800 - 3799
5
10.38
3.0
119.29
29.6
465.4
91 .4
2.42
.95
13.3
3800 - 4799
5
6.42
1.5
112.77
39.4
564. 1
89.7
3.10
.86
11.7
4800 - 5799
0









2.4
0.9
0.0
0.0
1.1
0.4
0.0
2.3
0.8
ALL VEHICLES 11 7.93 3.3 110.21 36.8 504.8 100.5 2.76 .88 13.0 2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
( 1968-1972 VEHICLES—COLD START DATA)




(MANU.
TUNE-
-UP)





#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
12.59
0.0
156.17
0.0
551.4
0.0
1.52
0.00
10.6
0.0
CHRYSLER
2
6.73
1.5
99.33
6.8
538.8
72.6
3.62
.59
12.4
1.0
FORD MOTOR CO.
3
5.78
1.6
59.90
26.6
614.4
103.6
4.21
.70
12.4
1.9
GENERAL MOTORS
5
4.68
1.9
62.24
19.9
511.7
144.4
2.83
1.37
14.9
3.3
IMPORTS
0










*MODEL YEAR











1968
1
4.84
0.0
69.74
0.0
759.1
0.0
5.20
0.00
10.0
0.0
1969
3
7.63
0.2
92.81
11.0
501.5
41.4
3.87
1.10
13.2
0.6
1970
4
6.64
4.0
72.65
57.0
488.0
85.1
2.54
1.22
14.9
3.5
1971
2
5.14
0.7
80.92
19.3
662.0
101.5
3.35
.20
11.1
0.9
1972
1
2.22
0.0
45.11
0.0
491.2
0.0
1.89
0.00
15.6
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
6.07
2.7
76.8S
35.1
543.3
114.1
3.23
1.26
13.4
2.7
TRUCK
0










*VEHICLE OWNER











GSA
1
4.65
0.0
67.29
0.0
733.8
0.0
3.49
0.00
10.4
0.0
PRIVATE OWNER
10
6.21
2.8
77.84
36.8
529.7
101.3
3.21
1.32
13.7
2.7
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
4.64
2.2
60.36
22.5
449.8
47.9
2.24
.43
16.1
2.2
NO CNV/NO APMP
7
6.89
2.8
86.32
38.8
604.5
102.0
3.80
1.23
11.8
1.6
*DISPLACEMENT











LESS THAN 151
1
2.22
0.0
45.11
0.0
491.2
0.0
1.89
0.00
15.6
0.0
151 - 250
1
4.03
0.0
43.92
0.0
381.0
0.0
1.86
0.00
19.2
0.0
251 - 350
6
7.57
2.8
87.52
42.6
512.6
46.1
3.32
1.27
13.4
1.7
MORE THAN 350
3
5.04
0.5
77.20
15.1
694.4
91.1
3.97
1.08
10.7
0.9
*INERTIA WEIGHT











1800 - 2799
1
2.22
0.0
45.11
0.0
491.2
0.0
1.89
0.00
15.6
0.0
2800 - 3799
5
6.80
3.5
76.57
50.1
484.2
74.2
2.57
1.06
14.7
3.1
3800 - 4799
5
6.11
1.5
83.55
15.8
623.7
118.2
4.16
.86
11.6
1.4
4800 - 5799
0










ALL VEHICLES
11
6.07
2.7
76.88
35.1
548.3
114.1
3.23
1.26
13.4
2.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-4

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1963-19 72 VEHICLES--COLD START DATA)
(PARA ADJ/DEVICE)

# OF HC

CO

C02
NOX

VEH. MEAN
S.D.
MEAN
S.D.
MEAN S.D.
MEAN S.D.
*VEHICLE MANUFACTURER





AMER. MOTORS
1 7.81
0.0
80.72
0.0
507.4 0.0
1.97 0.00
CHRYSLER
-2 5.10
0.2
58.18
0.8
579.2 59.0
2.74 .33
FORD MOTOR CO.
3 7.48
2.7
43.79
14.2
601.3 136.7
3.59 .45
GENERAL MOTORS
5 6.64
2.1
60.57
20.0
479.3 80.1
2.36 1.01
IMPORTS
0





MPG
*MODEL YEAR
* INERTIA WEIGHT
0.0
1.1
2.3
2.1
1968	1 4.38 0.0 75.38 0.0 609.9 0.0 1.90 0.00 12.0 0.0
1969	3 6.88 1.8 65.51 13.9 504.8 39.7 3.39 .53 14.1 0.3
1970	4 8.52 1.3 51.95 25.2 485.4 51.1 2.21 1.12 15.0 1.3
1971	2 5.09 0.2 52.17 7.7 68S.9 97.6 2.81 .42 11.3 1.2
1972	1 4.38 0.0 47.22 0.0 420.1 0.0 3.49 0.00 17.5 0.0
1973	0
1974	0
1975	0
-VEHICLE TYPE
AUTOMOBILE	11 6.70 2.0 57.39 17.7 533.3 99.9 2.73 .90 14.0 2.0
TRUCK	0
"VEHICLE OWNER
GSA	1 4.96 0.0 46.72 0.0 758.9 0.0 3.10 0.00 10.5 0-0
PRIVATE OWNER	10 6.87 2.0 5S.46 18.3 510.7 69.8 2.69 .94 14.4 1.7
""CONTROL OPTIONS (CONVERTER, AIR PUI1P)
CNV/A.PHP	0
CNY'/NO A.PMP
0










A.PMP/KO Ci\'V
4
7. 20
2.0
56.87
21.0
446.6
38.0
2.47
1.13
16.0
1.3
NO CNV/'NO APMP
7
6.41
2.1
57.69
17.4
582.8
89.7
2.88
. 80
12.9
1.5
-DISPLACEMENT











LESS THAN 151
1
4.38
0.0
47. 22
0.0
4 20. 1
0.0
3.49
0.00
17.5
0.0
151 - 250
1
7.31
0.0
65. 23
0.0
411.9
0.0
0.99
0.00
16.5
0.0
251 - 350
6
7.90
1.8
56. 52
22.5
507.4
27.6
3.01
.80
14.3
0.7
MORE THAN 350
3
4.85
0.4
59.91
14.5
663.2
83.0
2.50
.60
11.5
0.9
1800 - 2799
1
4.33
0.0
47. 22
0.0
420. i
0. 0
3.49
0.00
17.5
0.0
2800 - 3799
5
8.52
1.2
57.87
25. 5
480.5
45. 6
2.41
1.06
14.9
1.1
3800 - 4799
5
5.34
1 . 1
58.94
10.4
608. 7
95. 3
2.90
.77
12.5
L. 5
4800 - 5799
5










ALL VEHICLES
11
6. 70
2.0
57. 39
17.7
533.3
99.9
2.73
.90
14.0
2.0
AUTOMOTIVE TESTING LABORATORIES, INC .
19900 E. COLFAX, AURORA, COLO. 80011
D-5

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)



(BASELINE-MANU. TUNE-UP)





#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN :
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
12.59
0.0
156.17
0.0
551 .4
0.0
1.52
0.00
10.6
0.0
CHRYSLER
2
6.73
1.5
99.33
6.8
538.8
72.6
3.62
.59
12.4
1.0
FORD MOTOR CO.
3
5. 78
1.6
59.90
26.6
614.4
103.6
4.21
.70
12.4
1.9
GENERAL MOTORS
5
4.68
1.9
62.24
19.9
511.7
144.4
2.83
1.37
14.9
3.3
IMPORTS
0










*MODEL YEAR











1968
1
4.84
0.0
69. 74
0.0
759. 1
0.0
5.20
0.00
10.0
0.0
1969
3
7.63
0.2
92.81
11.0
501.5
41.4
3.87
1.10
13.2
0.6
1970
4
6.64
4.0
72.65
57.0
488.0
85.1
2.54
1.22
14.9
3.5
1971
2
5. 14
0.7
80.92
19.3
662.0
101.5
3.35
.20
11.1
0.9
1972
1
2.22
0.0
45.11
0.0
491 .2
0.0
1.89
0.00
15.6
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
6.07
2.7
76.88
35. 1
548.3
114. 1
3.23
1.26
13.4
2.7
TRUCK
0










'-VEHICLE OWNER











GSA
1
4.65
0.0
67. 29
0.0
733.8
0.0
3.49
0.00
10.4
0.0
PRIVATE OWNER
10
6.21
2.8
77.84
36.8
529.7
101.3
3.21
1.32
13.7
2.7
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
4.64
2.2
60.36
22.5
449.8
47.9
2.24
,43
16.1
2.2
NO CNV/NO APMP
7
6.89
2.8
86.32
38.8
604.5
102.0
3.80
1.23
11.8
1.6
*DISPLACEMENT











LESS THAN 151
1
2.22
0.0
45.11
0.0
491 .2
0.0
1.89
0.00
15.6
0.0
151 - 250
1
4.03
0.0
43.92
0.0
381.0
0.0
1.86
0.00
19.2
o.o
251 - 350
6
7.57
2.8
87.52
42.6
512.6
46. 1
3.32
1.27
13.4
1.7
MORE THAN 350
3
5.04
0.5
77.20
15.1
694.4
91.1
3.97
1.08
10.7
0.9
*INERTIA WEIGHT











1800 - 2799
1
2.22
0.0
45. 11
0.0
491.2
0.0
1.89
0.00
15.6
0.0
2800 - 3799
5
6.80
3.5
76.57
50.1
484.2
74.2
2.57
1.06
14.7
3.1
3800 - 4799
5
6.11
1.5
83.55
15.8
623.7
118.2
4.16
.86
11.6
1.4
4800 - 5799
0










ALL VEHICLES
11
6.07
2.7
76.88
35.1
548.3
114.1
3.23
1.26
13.4
2.7


AUTOMOTIVE
TESTING LABORATORIES,INC.






19900
E. COLFAX,
AURORA
, COLO.
80011




D-6

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(BASELINE-MANU. TUNE-UP)
It OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX
MEAN S;D.
MPG
MEAN S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
-1.13
0.0
-2.63
0.0
24.6
0.0
0.01
0.00 -0.2
0.0
CHRYSLER
2
-0. 12
1.7
26.10
12.7
6.6
47. 7
-1.02
1.02 -0.8
0.5
FORD MOTOR CO.
3
1.84
3.4
22.80
39.5
-26.7
10. 1
-0.25
.37 -0.4
1.2
GENERAL MOTORS
5
3.25
2.4
49.72
31.5
-87.1
106.5
-0.49
1.43 -0.3
2.1
IMPORTS
0









*MODEL YEAR










1968
1
2.00
0.0
92.23
0.0
-266.7
0.0
-2.86
0.00 1.5
0.0
1969
3
2.08
4. 5
28.68
25.0
-15.4
50.4
-0.99
.65 -0.7
0.7
1970
4
2.67
2.9
39.05
30.8
-9.1
31.6
-0.03
.22 -1.5
0.9
1971
2
0. 24
1.2
12.61
31.8
-21.4
8.1
-0.07
.32 -0.0
0.6
1972
1
1 .00
0.0
6.85
0.0
-86.0
0.0
0.84
0.00 2.3
0.0
1973
0









1974
0









1975
0









^VEHICLE TYPE
AUTOMOBILE
TRUCK
11
0
1.85
2.8
33.32
32.2
-43. 5
82.4
-0.48
1.02
-0.4
1.4
* VEHICLE OWNER











GSA
PRIVATE OWNER
1
10
-0.62
2.10
0.0
2.8
-9.86
37.64
0.0
'30.3
-15.7
-46. 2
0.0
86. 3
0.15
-0. 54
0.00
1.05
0. 4
-0.5
0.0
1.5
"CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PHP
A.PMP/NO CNV '
NO' CNV/NO APMP
0
0
4
7
3. 56
0. 88
2.7
2.5
39. 09
30.03
24.0
37.4
-42.2
-44 . 1
41.0
102.3
0.10
-0.81
.61
1. 10
-0.8
-0.2
9. 1
I! i
'-'DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
1
6
3
1.00
3.91
2.17
0.83
0.0
0.0
3.6
1.3
6.85
57.22
30.84
39. 15
0.0
0.0
27. 2
51.2
-86.0
-36.4
-7.7
-103.2
0.0
0.0
38.6
141.7
0.84
0.01
-0.51
-1 .00
0.00
0.00
.68
1.62
2.3
-2.4
-1.0
0.5
0.0
0.0
0.8
1.0
*INERTIA WEIGHT
1800 - 2799
1
1.00
0.0
6.85
0.0
-86.0
0.0 0.84
0.00 2.3
0.0
2800 - 3799
5
3.57
3.2
42.72
27.9
-18.8
35.0 -0.15
.34 -1.4
0.8
3800 - 4799
5
0.31
1.3
29. 22
38.7
-59.6
119.2 -1.07
1.22 0.1
1.0
4800 - 5799
0







ALL VEHICLES
11 1.85 2.8 33.32 32.2 -A3.5 82.A -0.48 1.02 -0.4 1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-7

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)



(BASELINE-MANU. TUNE-UP)





it
OF
RC

CO

C02
NOX
MPC

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
-9.9
0.0
-1.7
0.0
4.3
0.0
0.7
0.0
-2.0
0.0
CHRYSLER
2
-2.2
26.2
20.6
9. 1
1.4
8.8
-43.0
46. 2
-6.7
3.6
FORD MOTOR CO.
3
14. 2
35. 1
21.3
43.7
-4.8
2.4
-5.9
9. 1
-2.9
9.7
GENERAL MOTORS
5
37.9
10.3
40.4
18.0
-19.5
21.2
-23.1
59.8
-2.0
13.7
IM PORTS
0









*MODEL YEAR











1968
1
29.2
0.0
56.9
0.0
-54.2
0.0
-122.2
0.0
13.1
0.0
1969
3
11.1
35.3
21.6
14.5
-4.0
10.9
-40.3
31.9
-5.6
6.0
1970
4
30.8
28.8
40. 1
30.8
-2.7
7. 1
0.0
6.5
-10.7
5.9
1971
2
0.5
22.4
4.9
31.3
-3.5
1.9
-3.1
10. 2
-0.1
5.7
1972
1
31.1
0.0
13. 2
0.0
-21.2
0.0
30.8
0.0
12.6
0.0
1973
0










1974
0










1975
0










* VEHICLE TYPE











AUTOMOBILE
11
19.8
26.7
27.7
26.6
-9.5
17.0
-19.9
43.3
-3. 1
9.9
TRUCK
0










* VEHICLE OWNER











GSA
1
-15.4
0.0
-17.2
0.0
-2.2
0.0
4.1
0.0
3.9
0.0
PRIVATE OWNER
10
23.3
25.4
32.2
23.2
-10.3
17.7
-22.3
44.8
-3.8
10.2
*C0NTR0L OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A. PMP/NO CNV
4
40.0
10.5
36. 2
17.8
-10.9
9.9'
1.7
25.9
-5.8
12.5
NO CNV/NO APMP
7
8. 2
26.6
22.9
30.8
-8.8
20.7
-32.2
47.9
-1.6
8.9
^DISPLACEMENT











LESS THAN 151
1
31. 1
0.0
13.2
0.0
-21.2
0.0
30.8
0.0
12.6
0.0
151 - 250
1
49.2
0.0
56.6
0.0
-10.6
0.0
0.5
0.0
-14.2
0.0
251 - 350
6
17.9
31.0
28. 1
25. 2
-2.0
8.2
-20.2
30.3
-7.6
6.0
MORE THAN 350
3
10.1
23.0
22.3
37.3
-20.4
29.3
-42.8
69.2
4.3
8.6
*INERTIA WEIGHT











1800 - 2799
1
31.1
0.0
13.2
0.0
-21.2
0.0
30.8
0.0
12.6
0.0
2800 - 3799
5
34.4
26.2
39.7
26.7
-5.0
8.0
-6.3
15.3
-10.3
5.2
3800 - 4799
5
2.9
21.0
18.7
26.8
-11.8
24.3
-43.5
53.6
1.0
8.5
4800 - 5799
0










ALL VEHICLES
11
19.8
26.7
27.7
26.6
-9.5
17.0
-19.9
43.3
-3.1
9.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-8

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1968-19 72 VEHICLES—COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AI1ER. MOTORS
1
7.81
0.0
80-72
0.0
CHRYSLER
2
5.10
0.2
58.18
0.8
FORD MOTOR CO.
3
7.48
2.7
43.79
14.2
GENERAL MOTORS
5
6.64
2.1
60.57
20.0
IMPORTS
0


*MODEL YEAR





1968
1
4.38
0.0
75.38
0.0
1969
3
6.88
1.8
65.51
13.9
1970
4
8.52
1.3
51.95
25. 2
1971
2
5.09
0.2
52. 17
7.7
1972
I
4.38
0.0
47. 22
0.0
1973
0



1974
0




1975
0




"VEHICLE TYPE





AUTOMOBILE
11
6.70
2.0
57.39
17.7
TRUCK
0




-VEHICLE OWNER





GSA
1
4.96
0.0
46. 72
0.0
PRIVATE OWNER
10
6. 87
'> 11
58.^6
18.3
"CONTROL OPTIONS(CONVERTER,AIR
PUMP)

CNV/A.PMP
0




CNV/NO A.PMP
0




A.PMP/NO CNV
4
7. 20
2.0
56.87
21.0
NO CNV/NO APMP
7
6.41
2.1
57.69
17.4
'¦DISPLACEMENT





LESS THAN 151
1
4. 38
0.0
47.22
0.0
151 - 250
1
7.31
0.0
65.23
0.0
251 - 350
6
7.90
1.8
56. 52
22. 5
MORE THAN 350
3
4.85
0.4
59.91
14.5
*INERTIA WEIGHT





1800 - 2799
•1
4. 3o
0-0
47.22
0.0
2800 - 3799
5
8.52
1.2
57.87
25. 5
3800 - 4 799
5
5. 34
1.1
58.94
10.4
4800 - 5799
0



ALL VEHICLES
11
6. 70
2.0
57. 39
17.7
507.4 0.0	1.97	0.00	13.5	0.0
579. 2 59.0	2. 7 A	.33	13.0	1.1
601.3 136.7	3.59	.45	13.1	2.3
479.3 80.1	2.36	1.01	15.2	2.1
609.9	0.0	1.90	0.00	12.0	0.0
504.8	39.7	3.39	.53	14.1	0-3
485.4	51.1	2.21	1.12	15.0	1.3
689.9	97.6	2.81	.42	11.3	1.2
420.1	0.0	3.49	0.00	17.5	0.0
533.3 99.9 2.73 .90 14.0 2.0
758.9 0.0 3.10 0.00 10.5 0.0
510.7 09.8 2.69 .94 14.4 1.7
446.6 38.0 2.47 1.13 16.0 1.3
582.8 89.7 2.88 .80 12.9 1.5
4 20.1	0.0
411.9 0.0
507.4	27.6
663.2 83.0
420.1 0.0
480.5 45.6
608.7 95.3
533.3 99.9 2.73 .90 14.0 2.0
3.49
0.00
17.5
0.0
0.99
0.00
16.5
0.0
3.01
.80
14.3
0.7
2.50
. 60
11.5
0.9
3.49
0.00
17.5
0.0
2.41
1.06
14.9
1.1
2.90
.77
12.5
1.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-9

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)

OF
HC

CO

CO 2
NOX MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
3.65
0.0
72.82
0.0
68.6
0.0
-0.44
0.00 -3.1
0.0
CHRYSLER
2
1.51
0.0
67.25
6. 7
-33.7
34.0
-0.14
.76 -1.3
0.6
FORD MOTOR CO.
3
0.14
0.9
38.91
29.0
-13.6
23.8
0.36
.16 -1.1
1.3
GENERAL MOTORS
5
1.29
3.2
51.39
31 .8
-54.7
40.8
-0.02
.89 -0.6
1.0
IMPORTS
0









*MODEL YEAR










1968
1
2.46
0.0
86. 59
• 0.0
-117.5
0.0
0.44
0.00 -0.4
0.0
1969
3
2.84
2.9
55.98
16.4
-18.8
27.4
-0.51
.75 -1.6
0.2
1970
4
0.78
2.2
59.74
16.6
-6.4
56.8
0.30
.56 -1.6
1.4
1971
2
0. 29
1.7
41.36
43.4
-49.3
12.0
0.47
.10 -0.3
0.9
1972
1
-1.16
0.0
4. 74
0.0
-14.9
0.0
-0.76
0.00 0.4
0.0
1973
0





'



1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
11
1.23
2.3
52.82
26.8
-28.5
47.4
0.03
.67 -1.1
1 . 1
TRUCK
0









*VEHICLE OWNER










GSA .
1
-0.93
0.0
10.71
0.0
-40.8
0.0
0.54
0.00 0.3
0.0
PRIVATE OWNER
10
1.45
2.3
57.03
24. 1
-27.2
49.8
-0.03
.68-1.2
1.1
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
1.00
3.6
42.58
28.8
-39.0
23.9
-0.13
.99 -0.6
1.1
NO CNV/NO APMP
7
1.36
1.5
58.66
25.9
-22.4
57.9
0.12
.48 -1.3
1.1
^DISPLACEMENT










LESS THAN 151
1
-1.16
0.0
4. 74
0.0
-14.9
0.0
-0.76
0.00 0.4
0.0
151 - 250
1
0.63
0.0
35.91
0.0
-67.3
0.0
0.88
0.00 0.3
0.0
251 - 350
6
1 .84
2.7
61.83
12. 7
-2.5
39.6
-0.20
.66 -1.9
0.6
MORE THAN 350
3
1.02
1.8
56.44
40.3
-72.0
40.3
0.46
.07 -0.3
0.6
*INERTIA WEIGHT










1800 - 2799
1
-1.16
0.0
4.74
0.0
-14.9
0.0
-0.76
0.00 0.4
0.0
2800 - 3799
5
1.86
3.1
61.42
14.8
-15.1
52.8
0.01
.82 -1.6
1.2
3800 - 4799
5
1.08
1.3
53.83
30.0
-44.6
47.4
0.20
.50 -0.8
0.8
4800 - 5799
0






ALL VEHICLES
11
1.23
2.3
52.82
26.8
-28.5
4 7.4
0.03
.67 -1.1
1.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-10

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
( 1968-1972 VEHICLES—COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
if
OF
HC

CO

C02
NOX

MPG

VEH.
MEAN S
.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
.D. MEAN S.
D.
^VEHICLE MANUFACTURER









AMER. MOTORS
1
31 .8
0.0
47.4
0.0
11.9
0.0
-28.8
0.0
-29.5
0.0
CHRYSLER
2
22.8
0.3
53.6
2.8
-6.1
6.0
-7.9
30.6
-11.4
4.4
FORD MOTOR CO.
3
-2.6
18.0
43.1
26.2
-1.9
3.3
.9.4
4.8
-8.2
10.5
GENERAL MOTORS
5
5.3
34.7
41.7
21. 1
-12.9
8.8
-0.0
41.8
-4.8
7.1
IMPORTS
0










"MODEL YEAR











1968
1
36.0
0.0
53.5
0.0
-23.9
0.0
18.8
0.0
-3.5
0.0
1969
3
25.3
15.7
45. 7
5.8
-4.4
6.7
-26.6
32.4
-12.4
2.1
19 70
4
5. 2
22.6
54. 6
16. 1
-3.3
13.0
10.9
31.5
-14.3
13.0
1971
2
-0.3
32.3
37. 1
26. 1
-8.0
3.2
14.3
0.8
-2.6
8.1
1972
1
-36.0
0.0
9. 1
0.0
-3.7
0.0
-27.8
0.0
2.2
0.0
1973
0










1974
0










1975
0










-VEHICLE TYPE











AUTOMOBILE
11
8. 7
26.2
44.7
18.4
-6.4
9.9
-1.5
30. 3
-9.2
9. S
TRUCK
0









"VEHICLE OWNER











GSA
1
-23. i
0.0
18.6
0.0
-5.7
0.0
14.8
0.0
3.1
0.0
PRIVATE OWNER
10
11.9
25.2
4 7. ^
i 7. i
-6.4-
10 ¦ 4
-3 . 1
31.4
-10.4
9.4
-CONTROL OPT IONS(CONVERTER, AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.FMP/NO CNV
4
-2 . 3
34.9
38.7
23.2
-10.1
7.3
-4 . 8
46.7
-5.1
8.1
NO CNV/NO APMP
7
15.1
20. 1
48. 2
16.0
-4.2
11.0
0.3 •
20. 6
-11.5
10.5
"DISPLACEMENT











LESS THAN 151
1
-36.0
0.0
9. 1
0.0
-3.7
0.0
-27.8
0.0
2.2
0.0
151 - 250
1
7.9
0.0
35. 5
0.0
-19.5
o.o
47. ]
0.0
1.7
0.0
251 - 350
6
14.8
23.1
53. 3
1 2.0
-1.2
7.9
-13.9
29.3
-16.0
7.1
MORE THAN 350
3
11.8
31.0
42. 6
20. 7
-13.3
9.5
15.8
2.7
-2.9
5.7
-INERTIA WEIGHT











1S00 - 2799
1
-36.0
0.0
9.1
0.0
-3.7
o.o
-27.8
0.0
2.2
0.0
2800 - 3799
5
12.6
25.6
52.8
14.5
-5.1
11.9
-2.8
40.9
-13.9
11.3
3800 - 4799
5
13.9
22.5
43. 8
15. 3
-S.2
9.7
5?0
19.8
-b . 7
6.8
4 800 - 5799
0










ALL VEHICLES
11
8.7
26.2
44. 7
18.4
-6.4
9.9
-1 .5
30.3
-9.2
9.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-ll

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES—COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
// OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
10. 33
0.0
108.74
0.0
584.9
0.0
1.85
0.00
11.2
0.0
CHRYSLER
2
5.64
3.3
51.46
52.4
535.0
29.9
2.14
1.04
14.1
1.4
FORD MOTOR CO.
3
5.74
1.7
43.47
27.9
582.0
126.9
3.33
.43
13.7
3.1
GENERAL MOTORS
5
6.56
2.3
48.35
14.2
463.5
107.4
2.53
1.09
16.4
3.2
IMPORTS
0










6. 15
0.0
52.02
0.0
623. 3
0.0
3.66
0.00
12.2
0.0
7.73
0.3
77.30
10.0
520.6
30.6
3.26
.43
13.3
0.7
7.81
2.6
52.26
39.6
464. 1
100.8
1.90
.79
16.2
3.6
3.87
0.8
25.53
15.8
638.4
116.3
2.46
1.48
13.1
2.7
3.34
0.0
39. 77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
*MODEL YEAR
1968	1
1969	3
1970	4
1971	2
1972	1
1973	0
1974	0
1975	0
*VEHICLE TYPE
AUTOMOBILE	11 6.51 2.4 53.07 29.3 519.8 105.6 2.63 .95 14.8 3.0
TRUCK 0
*VEHICLE OWNER
GSA	1 4.46 0.0 36.68 0.0 720.6 0.0 3.51 0.00 11.2 0.0
PRIVATE OWNER	10 6.72 2.4 54.71 30.4 499.8 86.3 2.54 .95 15.1 2.9
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP
0










A. PMP/NO CNV
4
6. 66
2.6
47.43
16.3
423.5
68.8
2.25
1.02
17.4
2.5
NO CNV/NO APMP
7
6.43
2.4
56. 30
35.6
574.9
80.5
2.85
.91
13.2
2.2
^DISPLACEMENT











LESS THAN 151
1
3.34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
151 - 250
1
9.63
0.0
49.33
0.0
338.4
0.0
0.96
0.00
19.9
0.0
251 - 350
6
7.46
1.8
65. 27
33.9
513. 3
48.1
2.74
.73
14.2
2.3
MORE THAN 350
3
4.63
1.4
34.36
18.9
633.4
82.7
2.86
1.26
12.8
2.0
*INERTIA WEIGHT











1800 - 2799
1
3. 34
0.0
39.77
0.0
400.1
0.0
2.98
0.00
18.8
0.0
2800 - 3799
5
7.73
2.2
55.65
35.1
470.1
88.3
2.16
.89
15.8
3.3
3800 - 4799
5
5.93
2.0
53.15
29.4
593.6
81.1
3.04
.97
12.9
1.4
4800 - 5799
ALL VEHICLES 11 6.51 2.4 53.07 29.3 519.8 105.6 2.63 .95 14.8 '3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-12

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(BASELINE—TUHEUP/PARADJ/DEV)

OF
HC

CO

(
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
^VEHICLE MANUFACTURER




AMER. MOTORS
1
1. 13
0.0
44.80
0.0
-8.9
CHRYSLER
2
0.96
3.5
73.97
58.4
10.4
FORD MOTOR CO.
3
1.88
3.4
39. 23
33.2
5.7
GENERAL MOTORS
5
1.37
3.4
63.61
36.1
-38.9
IMPORTS
0





*MODEL YEAR






1968
L
0.69
0.0
109.95
0.0
-130.9
1969
3
1.99
4.6
44. 19
32. 1
-34.5
1970
4
1. 50
3.1
59.44
14.3
14.9
1971
2
1.51
2.8
68. 00
66.8
2.2
1972
1
-0.12
0.0
12.19
0.0
5.1
1973
0





1974
0





1975
0





-VEHICLE TYPE






AUTOMOBILE
11
1.41
2.9
57.13
35.7
-15.0
TRUCK
0





* VEHICLE OWNER






GSA
1
-0.43
0.0
20. 75
0.0
-2.5
PRIVATE OWNER
10
1. 60
3.0
60.77
35.4
-16.3
'¦CONTROL OPTIONS (COl.'VERTE
!¦., AT. K
PUMP)


CNV/A.PMP
0





CNV/NO A.PMP
0





A. Pi i?/NO CNV
4
1.54
3.9
52.02
29.0
-15.9
NO CKV/NO API IP
7
1.34
2.5
60. 05
40.9
-] 4. 6
^DISPLACEMENT






LESS THAN 151
1
-0. 12
0.0
12. 19
0.0
5. 1
151 - 250"
1
-1.69
0.0
51.81
0.0
6. 2
251 - 350
6
2.27
3.4
53. 09
24.8
-8.4
MORE THAN 350
3
1.24
2.0
81 .98
53.1
-42.2
"INERTIA WEIGHT






1800 - 2799
1
-0-12
0.0
12. 19
0.0
5.1
2800 - 3799
5
2.64
3.7
63.64
15.6
-4.7
3800 - 4799
5
0.49
1.9
59.62
48.7
-29.4
4S00 - 5799
0





ALL VEHICLES
11
1.41
2.9
57. 13
35.7
-15.0
)2	NOX	MPG
S.D. MEAN S.D. MEAN S.D.
0.0	-0.32	0.00 -0.9	0.0
4.9	0.^6	1.47 -2.4	1.9
45.0	0.58	.45 -1.7	2.6
64.3	-0.19	1.04 -1.8	1.1
0.0 -1.32	0.00 -0.7	0.0
48.4 -0.38	.86 -0.8	0.8
27.3 0.61	.62 -2.9	1.6
6.6 0.82	.97 -2.1	2.4
0.0 -0.25	0.00 -0.9	0.0
-15.0 51.1 0.12 .92-1.8 1.6
0.0
53. 7
44.6
57.9
0/13 0-00 -0.4
0.12
0.09
0.14
9 7 -J.9
.96 -2.1
.97 -1.6
0.0 -0.25 0.00 -0.9
49.7
59. 7
0.
0.0
i . 6
1.1
1.8
0.0 -0.25	0.00	-0.9	0.0
0.0 0.91	0.00	-3.1	0-0
46.7 0.07	.86	-1.8	1.7
77.0 0.10	1.41	-1.6	1.9
.94 -2.6
0.0
1.5
0.06 1.08 -1.2 1.5
-15.0 51.1 0.12 .92 -1.8 1.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-13

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1968-1972 VEHICLES—COLD START DATA)


(BASELINE—TUNEUP/PARADJ/DEV)



//
OF
HC

CO

C02
NOX MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S. D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
9.9
0.0
29.2
0.0
-1.5
0.0
-20.9
0.0 -8.2
0.0
CHRYSLER
2
13.8
53. 1
57.9
43.8
1.9
1.0
13.2
54.3 -21.3
17.6
FORD MOTOR CO.
3
15.5
33.7
45.6
30.6
1.1
8.6
14.3
11.4 -13.5
20.8
GENERAL MOTORS
5
9.0
26.0
52.7
18.0
-8.4
13.9
-8.4
47.9 -12.2
7.1
IMPORTS
0









*MODEL YEAR










1968
1
10.1
0.0
67.9
0.0
-26.6
0.0
-56.4
0.0 -6.1
0.0
1969
3
9.7
36.9
33.8
17.5
-8.1
11.5
-22.3
34.2 -6.4
6.0
1970
4
13.2
30.7
56.8
21.8
3.1
5.1
20.9
29.6 -21.2
12. 1
1971
2
20.3
43.8
62.5
37. 3
0.4
1.1
27.6
33.9 -18.7
21.3
1972
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0 -5.1
0.0
1973
0









1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
11
11.7
28. 1
49.6
24.0
-3.3
10.8
0.6
37.6 -13.9
12.4
TRUCK
0









* VEHICLE OWNER










GSA
1 "
-10.7
0.0
36. 1
0.0
-0.3
0.0
3.6
0.0 -3.6
0.0
PRIVATE OWNER
10
14.0
28.6
50.9
24.8
-3.6
11.3
0.3
39.6 -14.9
12.6
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PHP/NO CNV
4
8.8
30.0
48.9
18.3
-3.9
10.9
3.6
45.8 -13.7
7.2
NO CNV/NO APMP
7
13.4
29. 2
50.0
28.1
-3.0
11.6
-1.1
36.0 -13.9
15.2
*DISPLACEMENT










LESS THAN 151
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0 -5.1
0.0
151 - 250
1
-21.3
0.0
51.2
0.0
1.8
0.0
48. 7
0.0 -18.4
0.0
251 - 350
6
17.2
29.3
46. 2
24.2
-2.3
10.4
-5. 3
33.7 -14.2
13.2
MORE THAN 350
3
16.9
31.6
64. 3
26.6
-8.6
15.6
-0.4
54.1 -14.5
16.7
*INERTIA WEIGHT










1800 - 2799
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0 -5.1
0.0
2800 - 3799
5
20.4
31.1
56. 2
18.9
-1.6
11.3
5.8
42.5 -19.1
11.5
3800 - 4799
5
6. 1
28.5
48.1
29.1
-5.9
12.1
-2.7
40.7 -10.4
13.5
4800 - 5799
0









ALL VEHICLES
11
11.7
28. 1
49.6
24.0
-3.3
10.8
0.6
37.6 -13.9
12.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-14

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
¦¦•VEHICLE TYPE
AUTOMOBILE
TRUCK
-VEHICLE OWNER
1	10.33
2	5.64
3	5.74
5 6.56
0.0 108.74
3.3 51.46
1 .7 43.47
2.3 48.35
0.0
584.9
0.0
1.85
0.00
11.2
0.0
52.4
535.0
29.9
2.14
1.04
14.1
1.4
27.9
582.0
126.9
3.38
.43
13.7
3.1
14.2
463.5
107.4
2.53
1.09
16.4
3.2
1
3
4
1
0
0
0
11
0
6.15
0.0
52.02
0.0
623.3
0.0
3.66
0.00
12.2
0.0
7.73
0.3
77. 30
10.0
520.6
30. 6
3.26
.43
13.3
0.7
7.81
2.6
52. 26
39. 6
464. 1
100.8
1 .90
.79
16.2
3.6
3.87
0.8
25.53
15.8
638.4
116.3
2.46
1.48
13. 1
2.7
3.34
0.0
39. 77
0.0
400. 1
0.0
2.98
0.0 0
-18.8
0.0
6.51 .2.4 53.07 29.3 519.8 105.6 2.63 .95 14.8 3.0
GSA	1	4.46	0.0	36.68 0.0
FR1VATE OV::;er	lc	6.72	2. 4	54.71 30.4
--'CONTROL OPTIONS(CONVERTER,AIK	PUMP)
CNV/A.PMP	0
CNV/NO A.L'MP	0
A.PMP/NO CNV	4	6.66	2.6	47.43 16.3
NO CNV/NO API IP	7	6.43	2. 4	56.30 35.6
^'DISPLACEMENT
LESS THAN 151	1	3.34	0.0	39.77 0.0
151 - 250	1	9.63	0.0	49.33 0.0
251 - 350	6	7.46	1.8	65.27 33.9
MORE THAN 350	3	4.63	1.4	34.36 18.9
-INERTIA WEIGHT
1800 - 2 799	1	3.34	0.0	39.7 7 0.0
2800-3799	5	7.73	2.2	55.65 35.1
3800 - A799	5	5.93	2.0	53.15 29.4
4800 - 5799	0
720.6 0.0
499.8 86.3
3.51 0.00 11.2 0.0
2.54 .95 15.1 2.9
423.5 68.8 2.25 1.02 17.4
574.9 80.5 2.85 .91 13.2
400.1	0.0
338.4	0.0
513.3 48.1
63314	82.7
2.2
2.98 0.00 18.8	0.0
0.96	0.00 19.9	0.0
2.74	.73	14.2	2.3
2.86	1.26	12.8	2.0
400.1 0.0 2.9S 0.00 18.8 0.0
470.1 88.3 2.16 .89 15.8 3.3
593.6 81.1 3.04 .97 12.9 1.4
ALL VEHICLES
11 6.51 2.4 53.07 29.3 519.8 105.6 2.63 .95 14.8 3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-15

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AMD/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
// OF HC	CO	C02	NOX	MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
2. 26
0.0
47.43
0. 0
-33.5
0.0
-0.33
0.00
-0.6
0.0
CHRYSLER
2
1.08
1.8
47.87
45. 7
3.8
42.7
1.48
.45
-1.6
2.4
FORD MOTOR CO.
3
0.04
0.2
16.43
12.4
32.4
50. 7
0.83
.74
-1.3
1.5
GENERAL MOTORS
5
-1.88
2.2
13.89
13.8
48. 2
66.2
0.30
1.06
-1.5
1.2
E-1PORTS
0










*MODEL YEAR











1968
1
-1.31
0.0
17.72
0.0
135.8
0.0
1.54
0.00
-2.2
0.0
1969
3
-0.09
0.1
15.51
7.6
-19.1
11.5
0.61
.94
-0.1
0.2
19.70
4
-1.17
3.3
20. 39
22.8
23.9
54.0
0.64
.71
-1.3
1.1
1971
2
1.27
1.5
55.39
35.0
23.6
14.7
0.89
1. 29
-2.1
1.8
1972
1
-1.12
0.0
5.34
0.0
91.1
0.0
-1.09
0.00
-3.2
0.0
1973
0










1974
0










1975
0










^VEHICLE TYPE
AUTOMOBILE	11 -0.44 2.1 23.81 23.5 28.4 56.2 0.60 .94 -1.4 1.3
TRUCK	0
^VEHICLE OWNER
GSA	1 0.19 0.0 30.61 0.0 13.2 0.0-0.02 0.00-0.8 0.0
PRIVATE OWNER	10-0.50 2.2 23.13 24.7 29.9 59.0 0.66 .97-1.4 1.3
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 -2.02 2.5 12.94 15.8 26.3 51.6 -0.01 .93 -1.3 1 .3
NO CNV/NO APtlP	7 0.46 1 .4 30.03 25.9 29.6 62. 7 0.95 .81 -1.4 1.4
*DISPLACEMENT
LESS THAN 151
1
-1.12
0.0
5. 34
0.0
91. 1
0.0
-1.09
0.00 -3.2
0.0
151 - 250
1
-5.60
0-0
-5.41
0.0
42.6
0.0
0.90
0.00 -0.7
0.0
251 - 350
6
0.11
1.2
22.25
14.6
-0.7
46. 0
0.58
.80 -0.8
1.1
MORE THAN 350
3
0.41
1.8
42.83
33.0
61.0
65.6
1.11
.98 -2.1
1.3
MNERTIA WEIGHT










1800 - 2799
1
-1.12
0.0
5.34
0.0
91.1
0.0
-1.09
0.00 -3.2
0.0
2800 - 3799
5
-0.93
2.9
20.92
19.8
14. 1
51.6
0.41
.79 -1.1
1.1
3800 - 4799
5
0. 19
1.3
30.40
29.0
30.1
63.2
1.13
.70 -1.3
1.5
4800 - 5799
0'









ALL VEHICLES
11
-0.44
2.1
23.81
23.5
28.4
56.2
0.60
.94 -1.4
1.3
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-16

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AJIER. MOTORS
1
18.0
0.0
30.4
0.0
-6.1
0.0
-21.7
0.0 -6.0
CHRYSLER
2
19.6
31.4
49.9
49.4
0.2
7.9
42.4
19.3 -14.0
FORD MOTOR CO.
3
1.2
2.8
30.2
18.5
5.6
9.2
18.3
16.9 -9.8
GENERAL MOTORS
5
-48.9
53.5
19.5
22. 0
8.3
10.9
5.4
42.7 -11.0
IMPORTS
0








*MODEL YEAR









1968
1
-27. 1
0.0
25. 4
0.0
17.9
0.0
29.6
0.0 -22.0
1969
3
-1.2
1.5
16.5
7.8
-3.9
2.5
11.6
25.3 -0.8
1970
4
-37. 2
70.5
25. 3
26. 2
5.1
10. 2
20. 7
30.0 -9.3
1971
2
23.0
26. 7
65. 1
27.8
3.8
2.8
27.8
40.1 -18.1
1S72
1
-50.5
0.0
11.8
0. 0
18.5
0.0
-57. 7
0.0 -20.3
1973
0








1974
0








1975
0








*VEHICLE TYPE









AUTOMOBILE
11
-16.7
47.4
29.0
25.3
4.8
9.6
13. 2
34.0 -10.7
TRUCK
0








"VEHICLE OWNER









C-SA
1
4. 1
0.0
45.5
0.0
1.8
0.0
-0.6
0.0 -7.8
PRIVATE OWNER
10
-18.8
49. 4
2 7.3
26.0
5. 1
10. 1
14. 6
35.5 -1 1.0
'•"CONTROL OPTION
S(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A. PMP/NO CNV
4
-54.4
60.1
18. 1
25. 1
5.9
10.9
-0.6
46.8 -8.2
NO CNV/NO API IP
7
4.8
21.1
35. 2
25.0
4.1
9.7
21.1
25.1 -12.2
'• DISPLACEMENT









LESS THAN 151
1
-50.5
0.0
11.8
0.0
18.5
0.0
-57.7
0.0 -20.3
151 - 250
1
-139.0
o.o
-12.3
0.0
11.2
0.0
48.4
0.0 -3.6
251 - 350
6
-2.2
15.0
27.2
13.9
-0.4
o. 4
11.5
24.3 -6.0
MORE THAN 350
3
6. 3
34.5
51.9
30.2
8.5
8.4
28.4
28.3 -19.4
* INERTIA WEIGHT









1800 - 2799
1
-50.5
0.0
11.8
0.0
18.5
0.0
-57.7
0.0 -20.3
2800 - 3 799
5
-29. 7
63.4
25. 3
22. 7
3.0
10.0
13.1
31.1 -7.8
3800 - 4799
5
3.0
24.8
36. 1
30- 5
3.8
8.9
27.5
20.2 -11.7
4 800 - 5799
0








ALL VEHICLES
11
-16.7
47.4
29.0
25. 3
4.8
9.6
13.2
34.0 -10.7
0.0
9.5
0.0
1.1
7.7
L4.6
0.0
0.0
8.3
0.0
0.0
7.7
10.5
0.0
7.A
12.9
AUTOMOTIVE TESTING LABORATORIES„INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-17

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)


(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)




#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









A11ER. MOTORS
1
10.33
0.0
108.74
0.0
584.9
0.0
1.85
0.00
n.2,
0.0
CHRYSLER
2
5.64
3.3
51.46
52.4
535.0
29.9
2.14
1.04
14. l!
1.4
FORD MOTOR CO.
3
5. 74
1.7
43.47
27.9
582.0
126.9
3.38
.43
13.7
3.1
GENERAL MOTORS
5
6. 56
2.3
48. 35
14.2
463.5
107.4
2.53
1.09
16.4
3.2
IMPORTS
0








I

*MODEL YEAR











1968
1
6.15
0.0
52.02
0.0
623.3
0.0
3.66
0.00
12.2
0.0
1969
3
7.73
0.3
7 7.30
10.0
520.6
30.6
3.26
.43
13.3
0.7
1970
4
7.81
2.6
52.26
39.6
464.1
100.8
1.90
.79
16.2
3.6
1971
2
3.87
0.8
25.53
15.8
638.4
116.3
2.46
1.48
13. 1
2.7
1972
1
3.34
0.0
39.77
0.0
400.1
0.0
2.98
0.00
18.8
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
6.51
2.4
53.07
29.3
519.8
105.6
2.63
.95
14.8
3.0
TRUCK
0










"VEHICLE OWNER











GSA
1
4.46
0.0
36.68
0.0
720.6
0.0
3.51
0.00
11.2
0.0
PRIVATE OWNER
10
6.72
2.4
54. 71
30.4
499.8
86. 3
2.54
.95
15.1
2.9
^CONTROL OPTIONS
; (CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.66
2.6
47.43
16.3
423.5
68.-8
2.25
1.02
17.4
2.5
NO CNV/NO APMP
7
6.43
2.4
56. 30
35.6
574.9
80.5
2.85
.91
13.2
2.2
^DISPLACEMENT











LESS THAN 151
1
3. 34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
151 - 250
1
9.63
0.0
49.33
0.0
338.4
0.0
0.96
0-00
19.9
0.0
251 - 350
6
7.46
1.8
65.27
33.9
513.3
48. 1
2.74
.73
14.2
2.3
MORE THAN 350
3
4.63
1.4
34.36
18.9
633.4
82.7
2.86
1.26
12.8
2.0
*INERTIA WEIGHT











1800 - 2799
1
3.34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
2800 - 3799
5
7.73
2.2
55.65
35.1
470.1
88.3
2.16
.89
15.8
3.3
3800 - 4799
5
5.93
2.0
53.15
29.4
593.6
81.1
3.04
.97
12.9
1.4
4800 - 5799
0










ALL VEHICLES
11
6.51
2.4
53.07
29.3
519.8
105.6
2.63
.95
14.8
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-18

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
ft OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
I
-2.52
0.0 -
¦28.02
0.0
-77.5
0.0
0.12
0.00 2.2
0.0
CHRYSLER
2
-0.55
3.5
6. 72
51.6
44.2
29.1
0.60
.71 -1.1
2.5
FORD MOTOR CO.
3
1.74
3. 1
0.32
15.8
19.3
50. 1
0.21
.60 -0.6
1.9
GENERAL MOTORS
5
0.08
2.0
12.22
8. 1
15.8
41.4
-0. 18
.91 -1.2
1.4
IMPORTS
0









*MODEL YEAR










1968
1
-1.77
0.0
23. 36
0.0
-13.4
0.0
-1.76
0.00 -0.3
0.0
1969
3
-0.85
2.1 -
¦11.79
21.7
-15. 7
34. 1
0. 14
.11 0.8
0.6
1970
4
0.72
3.8
-0. 30
19.3
21.3
6 8.0
0.31
.34 -1.2
2.5
1971
2
1.22
1.0
26.63
23.5
51.5
18.7
0. 35
1.07 -1.8
1 . 5
1972
1
1.04
0.0
7.45
0.0
20.0
0.0
0.51
0.00 -1.3
0.0
1973
0









1974
0









1975
0









-¦VEHICLE TYPE










AUTOMOBILE
11
0.18
2.5
4. 32
22.0
13.4
48.0
0.10
.74 -0.7
1.8
TRUCK
0







-VEHICLE OWNER










GSA
1
0.50
0.0
10.04
0.0
38.3
0.0
-0.M
0.00 -0.7
0.0
PRIVATE OWNER
10
0.15
2.7
3. 75
23. 1
i 0. 9
49. 8
0. 15
.76 -0.7
1.9
"CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO ci;v
4
0. 54
2.0
9.44
6.0
23.1
44. 0
0.22
.23 -1.4
1.5
110 CNV/NO APMP
7
-0.02
2.9
1.39
27.6
7.9
52.7
0.03
.93 -0.3
1.9
-DISPLACEMENT










LESS THAN 151
1
1.04'
0.0
7.45
0.0
20.0
0.0
0.51
0.00 -1.3
0.0
151 - 250
1
-2.32
0.0
15.90
0.0
73.5
0.0
0.03
0.00 -3.4
0.0
251 - 350
6
0.44
3.2
-8. 75
18.8
-5.9
51.3
0.27
.27 0.1
1.7
MORE THAN 350
3
0. 22
1.9
25.54
16.7
29.9
39. 7
-0.36
1.43 -1.3
1.4
-INERTIA WEIGHT










1800 - 2799
1
1.04
0.0
7.45
0.0
20.0
0.0
0.51
0.00 -1.3
0.0
2800 - 3799
5
0.78
3.3
2.22
17.7
10.4
63.8
0. 26
.32 -0.9
2.2
3800 - 4799
5
-0.59
1.9
5.79
29.8
15. 1
40. 8
-0.14
1.06 -0.4
1.6
480u - 5799
0









ALL VEHICLES
11
0. 18
2.5
4. 32
22.0
13.4
48.0
0.10
.74 -0.7
1.8
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
D-19

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
-32.3
0.0
-34.7
0.0
-15.3
0.0
6.1
0.0
16.5
0.
CHRYSLER
2
-11.8
69.3
12. 2
88.9
7.4
4.3
23.6
28.6
-9.3
20'.
FORD MOTOR CO.
3
17.8
30.5
6.9
33.9
2.9
9.2
4.9
17.4
-4.7
13.
GENERAL MOTORS
5
-1.6
32. 1
18.5
9.5
3.9
9.5
-12.0
45.4
-7.3
8.
IMPORTS
0










*MODEL YEAR











1968
1
-40.4
0.0
31.0
0.0
-2.2
0.0
-92.6
0.0
-2.4
0.
1969
3
-18.8
37.8
-22.5
33.9
-3.4
6.7
3.8
2.5
5.4
4.
1970
4
3.8
42.4
6.7
29.6
5.0
14.3
10.9
8.2
-7.2
16.
1971
2
23.6
19.2
48. 3
37.9
7.7
3.8
15.3
40.3
-15.3
11.
1972
1
23.7
0.0
15.8
0.0
4.8
0.0
14.6 •
0.0
-7.4
0.
1973
0










1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
11
-1.0
36. 1
9.3
36.0
2.5
9.6
0.7
34.1
-4.8
12.
TRUCK
0










*VEHICLE OWNER











GSA
1
10.1
0.0
21.5
0.0
5.0
0.0
-13.2
0.0
-7.0
0.
PRIVATE OWNER
10
-2.1
37.9
8.1
37.7
2.3
10. 1
2.1
35.6
-4.6
13.
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
8.0
27.3
15.4
7.4
5.5
10.3
8.1
6.8
-8.6
9.
NO CNV/NO APMP
7
-6.1
41.4
5.9
45.8 '
0.8
9.6
-3.5
43.1
-2.7
14.
*DISPLACEMENT











LESS THAN 151
1
23. 7
0.0
15.8
0.0
4.8
0.0
14.6
0.0
-7.4
0.
151 - 250
1
-31.7 .
0.0
24.4
0.0
17.8
0.0
3.0
0.0
-20.4
0.
251 - 350
6
-1.6
40.9
-10.8
32.6
-1.3
10.1
8.7
7.4
1.3
12.
MORE THAN 350
3
2.3
39.4
42.5
28.6
4.4
6.3
-20.7
68.5
-11.0
11.
*INERTIA WEIGHT











1800 - 2799
1
23.7
0.0
15.8
0.0
4.8
0.0
14.6
0.0
-7.4
0.
2800 - 3799
5
5.5
36.9
8.4
25.9
2.5
13.5
9.1
8.2
-5.5
15.
3800 - 4799
5
-12.4
39.1
9.0
50.6
2.1
6.9
-10.4
50.5
-3.7
12.
4800 - 5799
0










ALL VEHICLES
11
-1.0
36.1
9.3
36.0
2.5
9.6
0.7
34.1
-4.8
12.
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
0
1
5
3
0
1
6
7
0
5
0
2
1
4
0
0
1
1
0
0
9
5
D-20

-------
APPENDIX E
TABLES OF TEST RESULTS
DATA SET 1
DATA SET 2
DATA SET 3
DATA SET 4
DATA SET 5
DATA SET 6
VEH. #3025
VEH. #3031
PAGE E-2
PAGE E-14
PAGE E-26
PAGE E-45
PAGE E-57
PAGE E-66
PAGE E-71
PAGE E-72
E-l

-------
1973-1974 VEHICLES
DATA SET 1
3 VEHICLES
E-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
it OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	2
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2
1974	1
1975	0
*VEHICLE TYPE
AUTOMOBILE	3
TRUCK	0
*VEHICLE OWNER
4.58
3.72
0.0
0.3
72.11
75.03
0.0
18.5
587.7 0.0 1-66 0.00 12.4 0.0
490.9 179.4 1.52 .31 15.2 5.1
4.25
3.52
0.5
0.0
80.11
61.94
11.3
0.0
602.7 21.3 1.70 .06 12.0 0.6
364.1 0.0 1.30 0.00 18.8 0.0
4.01 0.5 74.06 13.2 523.2 138.6 1.57 .23 14.2 4.0
GSA
PRIVATE OWNER
3 4.01
0
0.5
74.06
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 4.58 0.0 72.11
NO CNV/NO APMP	2 3.72 0.3 75.03
^DISPLACEMENT
LESS THAN 151	0
151 - 250	1 3.52 0.0 61.94
251 - 350	0
MORE THAN 350	2 4.25 0.5 80.11
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 3.52 0.0 61.94
3800 - 4799	2 4.25 0.5 80.11
4800 - 5799	0
13.2 523.2 138.6 1.57 .23 14.2 4.0
0.0 587.7 0.0 1.66 0.00 12.4 0.0
18.5 490.9 179.4 1.52 .31 15.2 5.1
0.0 364.1 0.0 1.30 0.00 18.8 0.0
11.3 602.7 21.3 1.70 .06 12.0 0.6
0.0 364.1 0.0 1.30 0.00 18.8 0-0
11.3 602.7 21.3 1.70 .06 12.0 0.6
ALL VEHICLES
3 4.01 0.5 74.06 13.2 523.2 138.6 1.57 .23 14.2 4.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARAMETRIC ADJ.)
§	OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 4.70 0.0 28.57 0.0 589.9 0.0 2.17 0.00 13.7 0-0
CHRYSLER	2 3.03 0.5 43.36 2.2 492.3 193.1 1.80 .71 16.5 5.4
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
1974	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 3.59 1.0 38.43 8.7 524.9 147.7 1.92 .54 15.5 4.2
TRUCK	0
*VEHICLE OWNER
GSA	3 3.59 1.0 38.43 8.7 524.9 147.7 1.92 .54 15.5 4.2
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 4.70 0.0 28.57 0.0 589.9 0.0 2.17 0.00 13.7 0.0
NO CNV/NO APMP	.2 3.03 0.5 43.36 2.2 492.3 193.1 1.80 .71 16.5 5.4
*DISPLACEMENT
LESS THAN 151	0
151 - 250	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
251 - 350	0
MORE THAN 350	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
3800 - 4799	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
4800 - 5799	0
ALL VEHICLES 3 3.59 1.0 38.43 8.7 524.9 147.7 1.92 .54 15.5 4.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-4

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARAMETRIC ADJ.)
$	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 4.70 0.0 28.57 0.0 589.9 0.0 2.17 0.00 13.7 0.0
CHRYSLER	2 3.03 0.5 43.36 2.2 492.3 193.1 1.80 .71 16.5 5.4
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
1974	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 3.59 1.0 38.43 8.7 524.9"147.7 1.92 .54 15.5 4.2
TRUCK	0
*VEHICLE OWNER
GSA	3 3.59 1.0 38.43 8.7 524.9 147.7 1.92 .54 15.5 4.2
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 4.70 0.0 28.57 0.0 589.9 0.0 2.17 0.00 13.7 0.0
NO CNV/NO APMP	2 3.03 0.5 43.36 2.2 492.3 193.1 1.80 .71 16.5 5.4
~DISPLACEMENT
LESS THAN 151	0
151 - 250	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
251 - 350	0
MORE THAN 350	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 3.37 0.0 44.92 0.0 355.8 0.0 1.30 0.00 20.3 0.0
3800 - 4799	2 3.69 1.4 35.19 9.4 609.4 27.6 2.23 .09 13.1 0.7
4800 - 5799	0
ALL VEHICLES 3 3.59 1.0 38.43 8.7 524.9 147.7 1.92 .54 15.5 4.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-5

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARAMETRIC ADJ.)
#	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 -0.12 0.0 ,43.54 0.0 -2.2 0.0 -0.51 0-00 -1.3 0.0
CHRYSLER	2 0.69 0.8 31.66 20.7 -1.4 13.7 -0.28 .40 -1.3 0.3
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 0.56 1.0 44.92 2.0 -6.6 6.3-0.54 .04-1.2 0.1
1974	1 0.15 0.0 17.02 0.0 8.3 0.0 0.00 0.00 -1.5 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 0.42 0.7 35.62 16.2 -1.7 9.7 -0.36 .31 -1.3 0.2
TRUCK	0
*VEHICLE OWNER
GSA	3 0.42 0.7 35.62 16.2 -1.7 9.7 -0.36 .31 -1.3 0.2
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 -0.12 0.0 43.54 0.0 -2.2 0.0 -0.51 0.00 -1.3 0.0
NO CNV/NO APMP	2 0.69 0.8 31.66 20.7 -1.4 13.7-0.28 .40-1.3 0.3
^DISPLACEMENT
LESS THAN 151	0
151 - 250	1 0.15 0.0 17.02 0.0 8.3 0.0 0.00 0.00 -1.5 0.0
251 - 350	0
MORE THAN 350	2 0.56 1.0 44.92 2.0 -6.6 6.3 -0.54 .04 -1.2 0.1
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 0.15 0.0 17.02 0.0 8.3 0-0 0.00 0.00 -1.5 0.0
3800-4799	2 0.56 1.0 44.92 2.0 -6.6 6.3-0.54 .04-1.2 0.1
4800 - 5799	0
ALL VEHICLES 3 0.42 0.7 35.62 16.2 -1.7 9.7 -0.36 .31 -1.3 0.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-6

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1973-197A VEHICLES-HOT START DATA)
(BASELINE—PARAMETRIC ADJ.)
#	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 -2.6 0.0 60.A 0.0 -0.4 0.0 -30.7 0.0 -10.2 0.0
CHRYSLER	2 17.8 19.2 40.0 17.7 0.2 2.9 -16.1 22.8 -8.7 0.8
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973'	2 14.4 24.0 56.5 5.5 -1.1 1.0 -31.5 1.0 -9.7 0.6
1974	1 4.3 0.0 27.5 0.0 2.3 0.0 0.0 0.0 -8.1 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 11.0 18.0 46.8 17.2 0.0 2.1 -21.0 18.2 -9.2 1.0
TRUCK	0
*VEHICLE OWNER
GSA	3 11.0 18.0 46.8 17.2 0.0 2.1 -21.0 18.2 -9.2 1.0
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 -2.6 0.0 60-4 0.0 -0.4 0.0 -30.7 0.0 -10.2 0.0
NO CNV/NO APMP	2 17.8 19.2 40.0 17.7 0.2 2.9 -16.1 22.8 -8.7 0.8
*DISPLACEMENT
LESS THAN 151	0
151 - 250	1 4.3 0.0 27.5 0.0 2.3 0.0 0.0 0.0 -8.1 0.0
251 - 350	0
MORE THAN 350	2 14.4 24.0 56.5 5.5 -1.1 1.0 -31.5 1.0 -9.7 0.6
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 4.3 0.0 27.5 0.0 2.3 0.0 0.0 0.0 -8.1 0.0
3800 - 4799	2 14.4 24.0 56.5 5.5 -1.1 1.0 -31.5 1.0 -9.7 0.6
4800 - 5799	0
ALL VEHICLES 3 11.0 18.0 46.8 17.2 0.0 2.1 -21.0 18.2 -9.2 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-7

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE-PARA ADJ/DEVICE)
it	OF HC CO C02 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 A.31 0-0 21.47 0.0 610.5 0.0 2.54 0.00 13.5 0.0
CHRYSLER	2 2.85 0.3 39.77 0.4 496.1 190.7 2.20 .57 16.5 5.5
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 3.47 1.2 30.46 12.7 620.7 14.5 2.57 .04 13.1 0.6
1974	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
TRUCK	0
*VEHICLE OWNER
GSA	3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
PRIVATE OWNER	0
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 4.31 0.0 21.47 0.0 610.5 0.0 2.54 0.00 13.5 0.0
NO CNV/NO APMP	2 2.85 0.3 39.77 0.4 496.1 190.7 2.20 .57 16.5 5.5
~DISPLACEMENT
LESS THAN 151	0
151 - 250	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
251 - 350	0
MORE THAN 350	2 3.47 1.2 30.46 12.7 620.7 14.5 2.57 .04 13.1 0.6
~INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
3800-4799	2 3.47 1.2 30.46 12.7 620.7 14.5. 2.57 .04 13.1 0.6
4800 - 5799	0
ALL VEHICLES 3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-8

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE-PARA ADJ/DEVICE)
#	OF HC CO CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 0.27 0.0 50.64 0.0 -22.8 0.0 -0.88 0.00 -1.1 0.0
CHRYSLER	2 0.87 0.6 35.25 19.0 -5.2 11.3 -0.68 .25 -1.4 0.4
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 0.78 0.7 49.65 1.4 -18.0 6.8 -0.87 .01 -1.1 0.0
1974	1 0.44 0.0 21.85 0.0 2.8 0.0 -0.50 0.00 -1.7 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 0.67 0.5 40. 38 16. 1 -11. 1 12.9 -0.75 .21 -1.3 0.3
TRUCK	0
*VEHICLE OWNER
GSA	3 0.67 0.5 40.38 16. 1 -11.1 12.9 -0.75 .21 -1.3 0.3
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 0.27 0.0 50.64 0.0 -22.8 0.0 -0.88 0.00 -1.1 0.0
NO CNV/NO APMP	2 0.87 0.6 35.25 19.0 -5.2 11.3-0.68 .25-1.4 .0.4
*DISPLACEMENT
LESS THAN 151	0
151 - 250	1 0.44 0.0 21.85 0.0 2.8 0.0 -0.50 0.00 -1.7 0.0
251 - 350	0
MORE THAN 350	2 0.78 0.7 49.65 1.4 -18.0 6.8 -0.87 .01 -1.1 0.0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 0.44 0.0 21.85 0.0 2.8 0.0 -0.50 0.00 -1.7 0.0
3800 - 4799	2 0.78- 0.7 49.65 1.4 -18.0 6.8 -0.87 .01 -1.1 0.0
4800 - 5799	0
ALL VEHICLES 3 0.67 0.5 40.38 16.1 -11.1 12.9 -0.75 .21 -1.3 0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES-HOT START DATA)
(BASELINE-PARA ADJ/DEVICE)
0	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 5.9 0.0 70.2 0.0 -3.9 0.0 -53.0 0.0 -8.8 0.0
CHRYSLER	2 22.7 14.4 45.2 14.1 -0.7 2.1 -43.9 7.8 -9.2 0.4
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 19.4 19.1 62.7 10.6 -3.0 1.2 -51.2 2.5 -9.2 0.5
1974	1 12.5 0.0 35.3 0.0 0.8 0.0 -38.5 0.0 -8.9 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 17.1 14.1 53.6 17.5 -1.7 2.3 -47.0 7.6 -9.1 0.4
TRUCK	0
*VEHICLE OWNER
GSA	3 17.1 14.1 53.6 17.5 -1.7 2.3 -47.0 7.6 -9.1 0.4
PRIVATE OWNER	0
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 5.9 0.0 70.2 0.0 -3.9 0.0 -53.0 0.0 -8.8 0.0
NO CNV/NO APMP	2 22.7 14.4 45.2 14.1 -0.7 2.1 -43.9 7.8 -9.2 0.4
*DISPLACEMENT
LESS THAN 151	0
151 - 250	I 12.5 0.0 35.3 0.0 0.8 0.0 -38.5 0.0 -8.9 0.0
251 - 350	0
MORE THAN 350	2 19.4 19.1 62.7 10.6 -3.0 1.2 -51.2 2.5 -9.2 0.5
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 12.5 0.0 35.3 0.0 0.8 0.0 -38.5 0.0 -8.9 0.0
3800 - 4799	2 19.4 19.1 62.7 10.6 -3.0 1.2 -51.2 2.5 -9.2 0.5
4800 - 5799	0
ALL VEHICLES 3 17.1 14.1 53.6 17.5 -1.7 2.3 -47.0 7.6 -9.1 0.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-10

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
$	OF HC CO C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 4.31 0.0 21.47 0.0 610.5 0.0 2.54 0.00 13.5 0.0
CHRYSLER	2 2.85 0.3 39.77 0.4 496.1 190.7 2.20 .57 16.5 5.5
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 3.47 1.2 30.46 12.7 620.7 14.5 2.57 .04 13.1 0.6
1974	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
TRUCK	0
*VEHICLE OWNER
GSA	3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 4.31 0.0 21.47 0.0 610.5 0.0 2.54 0.00 13.5 0.0
NO CNV/NO APMP	2 2.85 0.3 39.77 0.4 496.1 190.7 2.20 .57 16.5 5.5
*DISPLACEMENT
LESS THAN 151	0
151 - 250	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
251 - 350	0
MORE THAN 350	2 3.47 1.2 30.46 12.7 620.7 14.5 2.57 .04 13.1 0.6
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 3.08 0.0 40.09 0.0 361.3 0.0 1.80 0.00 20.4 0.0
3800 - 4799	2 3.47 1.2 30.46 12.7 620.7 14.5 2.57 .04 13.1 0.6
4800 - 5799	0
ALL VEHICLES 3 3.34 0.9 33.67 10.6 534.3 150.1 2.31 .45 15.5 4.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-ll

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
f? OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 0.39 0.0 7.10 0.0 -20.6 0.0 -0.37 0.00 0.2 0.0
CHRYSLER	2 0.17 0.2 3.59 1.8 -3.8 2.4 -0.40 .14 -0.1 0.1
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 0.22 0.2 4.72 3.4 -11.4 13.1 -0.34 .05 0.1 0.1
1974	1 0.29 0.0 4.83 0.0 -5.5 0.0 -0.50 0.00 -0.1 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 0.25 0.2 4.76 2.4 -9.4 9.8 -0.39 .10 0.0 0.2
TRUCK	0
*VEHICLE OWNER
GSA	3 0.25 0.2 4.76 2.4 -9.4 9.8 -0.39 .10 0.0 0.2
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 0.39 0.0 7.10 0.0 -20.6 0.0-0.37 0.00 0.2 0.0
NO CNV/NO APMP	2 0.17 0.2 3.59 1.8 -3.8 2.4-0.40 .14-0.1 0.1
~DISPLACEMENT
LESS THAN 151	0
151 - 250	1 0.29 0.0 4.83 0.0 -5.5 0.0 -0.50 0.00 -0.1 0.0
251 - 350	0
MORE THAN 350	2 0.22 0.2 4.72 3.4 -11.4 13.1 -0.34 .05 0.1 0.1
~INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 0.29 0.0 4.83 0.0 -5.5 0.0 -0.50 0.00 -0.1 0.0
3800 - 4799	2 0.22 0.2 4.72 3.4 -11.4 13.1 -0.34 .05 0.1 0.1
4800 - 5799	0
ALL VEHICLES 3 0.25 0.2 4.76 2.4 -9.4 9.8 -0.39 .10 0.0 0.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-12

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
#	OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
A11ER. MOTORS	1 8.3 0.0 24.9 0.0 -3.5 0.0 -17. 1 0.0 1.2 0.0
CHRYSLER	2 5.4 4.5 8.2 3.6 -0.9 0.9 -25.8 18.0 -0.5 0.3
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	0
*M0DEL YEAR
1968-	0
1969	0
1970	0
1971	0
1972	0
1973	2 5.3 4.3 15.2 13.6 -1.9 2.2 -15.0 2.8 0.5 1.0
1974	1 8.6 0.0 10.8 0.0 -1.5 0.0 -38.5 0.0 -0.7 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	3 6.4 3.6 13.7 10.0 -1.8 1.6 -22.9 13.7 0.1 1.0
TRUCK	0
*VEHICLE OWNER
GSA	3 6.4 3.6 13.7 10.0 -1.8 1.6 -22.9 13.7 0.1 1.0
PRIVATE OWNER	0
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	1 8.3 0.0 24.9 0.0 -3.5 0.0 -17.1 0.0 1.2 0.0
NO CNV/NO APMP	2 5.4 4-.5 8. 2 3.6 -0.9 0.9 -25.8 18.0 -0.5 0.3
~DISPLACEMENT
LESS THAN 151	0
151 - 250	1 8.6 0.0 10.8 0.0 -1.5 0.0 -38.5 0.0 -0.7 0.0
251 - 350	0
MORE THAN 350	2 5.3 4.3 15.2 13.6 -1.9 2.2 -15.0 2.8 0.5 1.0
~INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	1 8.6 0-0 10.8 0.0 -1.5 0.0 -38.5 0.0 -0.7 0.0
3800 - 4799	2 5.3 4.3 15.2 13.6 -1.9 2.2 -15.0 2.8 0.5 1.0
4800 - 5799	0
ALL VEHICLES 3 6.4 3.6 13.7 10.0 -1.8 1.6 -22.9 13.7 0.1 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-13

-------
1973-1974 VEHICLES
DATA SET 2
6 VEHICLES
E-14

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
4.92
0.0
67.08
0.0
590.5
0.0
3.41
0.00
12.5
0.0
CHRYSLER
2
2.98
0.7
57.61
19.2
509.6
236.8
2.59
1.37
15.4
5.2
FORD MOTOR CO.
1
3.40
0.0
97.95
0.0
346.4
0.0
0.74
0.00
17.4
0.0
GENERAL MOTORS
0










IMPORTS
2
3.43
0.9
68.70
3.1
269.1
72.0
1.19
1.00
23.3
4.2
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
2
3.70
1.7
55.55
16.3
633.8
61.2
3.48
.11
12.1
0.5
1974
4
3.44
0.5
76.63
14.4
306.7
60.1
1.19
.68
20.7
3.9
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
3.53
0.9
69.61
17.2
415.7
177.3
1.95
1.30
17.9
5.4
TRUCK
0










*VEHICLE OWNER











GSA
3
3.63
1.2
60.77
14.6
536.6
173.8
2.86
1.08
14.4
4.0
PRIVATE OWNER
3
3.42
0.7
78.45
17.0
294.9
67.7
1.04
.75
21.3
4.5
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
2
4. 16
1.1
82.51
21.8
468.4
172.6
2.07
1.89
14.9
3.5
NO CNV/NO APMP
4
3.21
0.7
63.15
12.9
389.4
199.3
1.89
1.27
19.3
5.9
^DISPLACEMENT











LESS THAN 151
3
3.42
0.7
78.45
17.0
294.9
67.7
1.04
.75
21.3
4.5
151 - 250
1
3.48
0.0
71.19
0.0
342.2
0.0
1.62
0.00
19.1
0.0
251 - 350
0









MORE THAN 350
2
3.70
1.7
55.55
16.3
633.8
61.2
3.48
. 11
12.1
0.5
*INERTIA WEIGHT











1800 - 2799
2
3.43
0.9
68.70
3.1
269.1
72.0
1.19
1.00
23.3
4.2
2800 - 3799
2
3.44
0.1
84.57
18.9
344.3
3.0
1.18
.62
18.2
1.2
3800 - 4799
2
3.70
1.7
55.55
16.3
633.8
61.2
3.48
.11
12.1
0.5
4800 - 5799
0









ALL VEHICLES
6
3.53
0.9
69.61
17.2
415.7
177.3
1.95
1.30
17.9
5.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-15

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP)
it OF HC	CO	C02	NOX	MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
3.94
0.0
37.85
0.0
587.8
0.0
3.47
0.00
13.4
0.0
CHRYSLER
2
2.64
0.8
35.75
20.0
502.0
180.7
2.56
.88
16.2
4.2
FORD MOTOR CO.
1
2.06
0.0
78.00
0.0
395.5
0.0
0.57
0.00
16.9
0.0
GENERAL MOTORS
0










IMPORTS
2
3.62
1.3
62.33
2.1
271.9
87.5
1.23
.98
24.0
6.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 3.00 1.3 29.73 11.5 608.8 29.7. 3.32 .21 13.3 0.1
1974	4 3.13 1.0 63.14 11.6 328.4 82.9,1.24 .79 21.0 5.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 3.09 1.0 52.00 20.1 421.9 159.0 1.94 1.24 18.5 5.5
TRUCK.	0
^VEHICLE OWNER
GSA	3 3.07 0.9 36.45 14.2 530.6 137.1 2.86 .82 15.3 3.4
PRIVATE OWNER	3 3.10 1.3 67.56 9.2 313.1 94.4 1.01 .79 21.6 5.9
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	2 3.00 1.3 57.93 28.4 491.6 136.0 2.02 2.05 15.2 2.5
NO CNV/NO APMP 4 3.13 1.0 49.04 19.2 387.0 176.3 1.89 1.08 20.1 6.2
~DISPLACEMENT
LESS THAN 151	3 3.10 1.3 67.56 9.2 313.1 94.4 1.01 .79 21.6 5.9
151 - 250
1
3.21
0.0
49.89
0.0
374.2
0.0
1.93
0.00
19.2
0.0
251 - 350
0










MORE THAN 350
2
3.00
1.3
29.73
11.5
608.8
29.7
3.32
.21
13.3
0.1
*INERTIA WEIGHT











1800 - 2799
2
3.62
1.3
62.33
2.1
271.9
87.5
1.23
.98
24.0
6.0
2800 - 3799
2
2.64
0.8
63.94
19.9
384.8
15.1
1.25
.96
18.0
1.6
3800 - 4799
2
3.00
1.3
29.73
11.5
608.8
29.7
3.32
.21
13.3
0.1
4800 - 5799
0










ALL VEHICLES
6
3.09
1.0
52.00
20.1
421.9
159.0
1.94
1.24
18.5
5.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-16

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
3.94
0.0
37.85
0.0
587.8
0.0
3.47
0.00
13.4
0.0
CHRYSLER
2
2.64
0.8
35.75
20.0
502.0
180.7
2.56
.88
16.2
4.2
FORD MOTOR CO.
1
2.06
0.0
78.00
0.0
395.5
0.0
0.57
0.0Q
16.9
0.0
GENERAL MOTORS
0









IMPORTS
2
3.62
1.3
62.33
.2.1
271.9
87.5
1.23
.98
24.0
6.0
*M0DEL. YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
2
3.00
1.3
29.73
11.5
608.8
29.7
3.32
.21
13.3
0.1
1974
4
3.13
1.0
63.14
11.6
328.4
82.9
1.24
.79
21.0
5.0
1975
0










^VEHICLE TYPE











AUTOMOBILE
6
3.09
1.0
52.00
20.1
421.9
159.0
1.94
1.24
18.5
5.5
TRUCK
0










*VEHICLE OWNER











GSA
3
3.07
0.9
36.45
14.2
530.6
137.1
2.86
.82
15.3
3.4
PRIVATE OWNER
3
3.10
1.3
67.56
9.2
313.1
94.4
1.01
.79
21.6
5.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
2
3.00
1.3
57.93
28.4
491.6
136.0
2.02
2.05
15.2
2.5
NO CNV/NO APMP
4
3.13
1.0
49.04
19.2
387.0
176.3
1.89
1.08
20.1
6.2
*DISPLACEMENT











LESS THAN 151
3
3.10
1.3
67.56
9.2
313.1
94.4
1.01
.79
21.6
5.9
151 - 250
1
3.21
0.0
49.89
0.0
374.2
0.0
1.93
0.00
19.2
0.0
251 - 350
'0










MORE THAN 350
2
3.00
1.3
29.73
11.5
608.8
29.7
3.32
.21
13.3
0.1
*INERTIA WEIGHT











1800 - 2799
2
3.62
1.3
62.33
2. 1
271.9
87.5
1.23
.98
24.0
6.0
2800 - 3799
2
2.64
0.8
63.94
19.9
384.8
15.1
1.25
.96
18.0
1.6
3800 - 4799
2
3.00
1.3
29.73
11.5
608.8
29.7
3.32
.21
13.3
0.1
4800 - 5799
0










ALL VEHICLES
6
3.09
1.0
52.00
20. 1
421.9
159.0
1.94
1.24
18.5
5.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-17

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU: TUNE-UP)

# OF HC

CO

C02
NOX
MPG

VEH. MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S.D.
MEAN S
*VEHICLE MANUFACTURER







AMER. MOTORS
1 0.98
0.0
29.23
0.0
2.7
0.0
-0.06 0.00
-1.0
CHRYSLER
2 0.34
0. 1
21.86
0.8
7.7
56.1
0.03 .49
-0.8
FORD MOTOR CO.
1 1.34
0.0
19.95
o.o
-49.1
0.0
0.17 0.00
0.4
GENERAL MOTORS
0







IMPORTS
2 -0.19
0.4
6.36
5.1
-2.9
15.5
-0.04 .01
-0.8
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 0.70 0.4 25.82
1974	4 0.31 0.7 13.49
1975	0
*VEHICLE TYPE
AUTOMOBILE	6
TRUCK	0
* VEHICLE OWNER
0.0
1.0
0.0
1.8
4.8 25.0 31.5 0.16 .31 -1.2 0.3
8.8 -21.7 24.5 -0-06 .20 -0.3 1.2
0.44 0.6 17.60 9.6 -6.1 33.8 0.02 .23-0.6 1.0
GSA	3 0.56 0.4 24.32
PRIVATE OWNER 3 0.32 0.9 10.89
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
4.3 6.0 39.8 0.00 .35 -0.8 0.7
8.6 -18.3 28.9 0.03 .12 -0.4 1.4
1.0
1.2
A.PMP/NO CNV
2
1.16
0.3
24.59
6.6
-23.2
36.6
0.05
.16 -0.3
NO CNV/NO APMP
4
0.08
0.4
14.11
9.4
2.4
34.1
-0.00
.29 -0.8
*DISPLACEMENT









LESS THAN 151
3
0.32
0.9
10.89
8.6
-18.3
28.9
0.03
.12 -0.4
151 - 250
1
0.27
0.0
21.30
0.0
-32.0
0.0
-0.3L
0.00 -0.1
251 - 350
0








MORE THAN 350
2
0.70
0.4
25.82
4.8
25.0
31.5
0.16
.31 -1.2
*INERTIA WEIGHT









1800 - 2799
2
-0.19
0.4
6.36
5.1
-2.9
15.5
-0.04
.01 -0.8
2800 - 3799
2
0.80
0.8
20.62
1.0
-40.6
12.1
-0.07
.34 0.2
3800 - 4799
2
0.70
0.4
25.82
4.8
25.0
31.5
0.16
.31 -1.2
4800 - 5799
0







ALL VEHICLES
6
0.44
0.6
17.60
9.6
-6.1
33.8
0.02
.23 -0.6
1.4
0.0
0.3
1.8
0.4
0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-18

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE— MANU. TUNE-UP)
P OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
0.0
11.6
0.0
-1.8
-4.2
23.0
0.0
21.1
0.0
-4.3 9.1 9.1 7.1 -0.3 5.7 -5.9 6.1 -2.6 7.1
*VEHICLE MANUFACTURER
AMER. MOTORS	1 19.9 0.0 43.6 0.0 0.5
CHRYSLER	2 12.3 6.4 40.4 14.8 -1.2
FORD MOTOR CO.	1 39.4 0.0 20-4 0.0 -14.2
GENERAL MOTORS	0
IMPORTS	2
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	2 18.4 2.2 47.2 5.2
1974	4 9.6 21.3 17.1 10.8
1975	0
*VEHICLE TYPE
AUTOMOBILE	6
TRUCK	0
*VEHICLE OWNER
GSA	3 14.8 6.3 41.5
PRIVATE OWNER	3 10.3 26.1 12.9
-7.9
-6.5
2.5
10.7
8.2
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	2
NO CNV/NO APMP	4
*DISPLACEMENT
29. 7
4.0
13.8
11.6
32.0
24.8
16.4
20.4
-6.9 10.3
-0.7 7.4
10. 6
-5.1
0.0
8.5
0.0
3.7 4.6 4.5 8.8 -10.2 3.3
-6.0 7.6 -2.0 18.1 -0.8 4.8
12.6 17.1 27.2 17.8 -2.8 8.0 0.2 14.9 -3.9 6.3
-0.6 8.2 -3.4 15.0 -7.0 6.0
-4.9 9.0 3.7 17.2 -0.9 5.8
17.5 -2.7
12.7 -4.6
7.3
6.8
LESS THAN 151
3
10.3
26. 1
12.9
8.2
-4.9
9.0
3.7
17.2 -0.9
5.8
151 - 250
1
7.8
0.0
29.9
0.0
-9.4
0.0
-19.1
0.0 -0.5
0.0
251 - 350
0









MORE THAN 350
2
18.4
CM
•
CN
47.2
5.2
3.7
4.6
4.5
CM
O
1
00
•
oo
3.3
*INERTIA WEIGHT
1800 -'2799
2
-4.3
9.1
9.
1
7.1
-0.3
5.7
-5.9
6.1
-2.6
2800 - 3799
2
23.6
22.4
25.
1
6.8
-11.8
3.4
1.9
29.8
1.0
3800 - 4799
2
18.4
2.2
47.
2
5.2
3.7
4.6
4.5
8.8
-10.2
4800 - 5799
0










ALL VEHICLES
6
12.6
17.1
27.
2
17.8
-2.8
8.0
0.2
14.9
-3.9
7.1
2.2
3.3
6.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 800H
E-19

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
4.32
0.0
22.54
0.0
581.2
0.0
4
.36
0.00
14.1
0.0
CHRYSLER
2
2.74
0.1
24.49
9.5
485.9
157.8
3
.42
.82
17.3
4.6
FORD MOTOR CO.
1
2.75
0.0
67.95
0.0
363.9
0.0
1
.29
0.00
18.5
0.0
GENERAL MOTORS
0











IMPORTS
2
3.37
1.3
37.99
1.4
281.8
82.7
2
.06
1.48
25.9
6.2
*MODEL YEAR












1968
0











1969
0











1970
0











1971
0











1972
0











1973
2
3.49
1.2
20.16
3.4
589.3
11.5
4
.18,
.25
14.0
0.1
1974
4
3.08
0.8
43.78
16.4
325.5
69.5
2
.06
1.06
22.7
5.2
1975
0











*VEHICLE TYPE












AUTOMOBILE
6
3.21
0.8
35.91
17.7
413.4
146.6
2
.77
1.37
19.8
6.0
TRUCK
0











*VEHICLE OWNER












GSA
3
3.27
0.9
23.84
6.8
517.7
124.4
3
.73
.79
16.2
3.7
PRIVATE OWNER
3
3.16
1.0
47.98
17.3
309.2
75.2
1
.81
1.14
23.5
6.1
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)








CNV/A.PMP
0











CNV/NO A.PMP
0











A.PMP/NO CNV
2
3.53
1.1
45.24
32.1
472.5
153.7
2
.82
2.17
16.3
3.1
NO CNV/NO APMP
4
3.05
0.8
31.24
9.6
383.9
156.4
2
.74
1.25
21.6
6.7
*DISPLACEMENT












LESS THAN 151
3
3. 16
1.0
47.98
17.3
309.2
75.2
1
.81
1.14
23.5
6.1
151 - 250
1
2.82
0.0
31.20
0.0
374.3
0.0
2
.84
0.00
20.5
0.0
251 - 350
0











MORE THAN 350
2
3.49
1.2
20.16
3.4
589.3
11.5
4
.18
.25
14.0
0.1
*INERTIA WEIGHT












1800 - 2799
2
3.37
1.3
37.99
1.4
281.8
82.7
2
.06
1.48
25.9
6.2
2800 - 3799
2
2.78
0.0
49.57
26.0
369.1
7.4
2
.06
1.10
19.5
1.4
3800 - 4799
2
3.49
1.2
20.16
3.4
589.3
11.5
4
.18
.25
14.0
0.1
4800 - 5799
0











ALL VEHICLES
6
3.21
0.8
35.91
17.7
413.4
146.6
2
.77
1.37
19.8
6.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-20

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
#
OF
HC

CO

C02 NOX
MP
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
MEAN
*VEHICLE MANUFACTURER







AMER. MOTORS
1
0.60
0.0
44.54
0.0
9.3
0.0 -0.95
0.00
-1.6
CHRYSLER
2
0.24
0.6
33.12
9.7
23.7
79.0 -0.83
.55
-1.8
FORD MOTOR CO.
1
0.65
0.0
30.00
0.0
-17.5
0.0 -0.55
0.00
-1.1
GENERAL MOTORS
0








IMPORTS
2
0.07
0.4
30.71
1.6
-12.8
fx.
00
0
1
O
.48
-2.7
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
2
0. 22
0.5
35.40
12.9
44.5
49.7 -0.69
.36
-1.9
1974
4
0.36
0.4
32.85
4.9
-18.8
11.0 -0.88
.39
-2.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
6
0. 31
0.4
33.70
7.0
2.3
40.4 -0.82
.36
-2.0
TRUCK
0








*VEHICLE OWNER









GSA
3
0.36
0.5
36.93
9.5
18.9
56.5 -0.87
.40
-1.8
PRIVATE OWNER
3
0.26
0.4
30.47
1.2
-14.3
8.0 -0.76
.39
-2.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
2
0.63
0.0
37.27
10.3
-4.1
19.0 -0.75
.28
-1.4
NO CNV/NO APMP
4
0. 15
0.4
31.91
5.9
5.5
50.6 -0.85
.42
-2.3
*DISPLACEMENT









LESS THAN 151
3
0.26
0.4
30.47
1.2
-14.3
8.0 -0.76
.39
-2.2
151 - 250
1
0.66
0.0
39.99
0.0
-32.1
0.0 -1.22
0.00
-1.4
251 - 350
0








MORE THAN 350
2
0.22
0.5
35.40
12.9
44.5
49.7 -0.69
.36
-1.9
*INERTIA WEIGHT









1800 - 2799
2
0.07
0.4
30.71
1.6
-12.8
10.7 -0.87
.48
-2.7
2800 - 3799
2
0.65
0.0
34.99
7.1
-24.8
10.3 -0.88
.47
-1.3
3800 - 4799
2
0.22
0.5
35.40
12.9
44.5
49.7 -0.69
.36
-1.9
4800 - 5799
0








ALL VEHICLES
6
0.31
0.4
33.70
7.0
2.3
40.4 -0.82
.36
-2.0
0.0
0.6
0.0
2.0
0.3
1.3
1.7
0.0
0.4
2.0
0.2
0.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-2I

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
// OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
12.2
0.0
66.4
0.0
1.6
0.0
-27.9
0.0 -12.9
0.0
CHRYSLER
2
6.1
18.2
57.9
2.4
1.2
14.9
-43.8
44.5 -13.3
8.0
FORD MOTOR CO.
1
19.1
0.0
30.6
0.0
-5.1
o.o
-74.3
0.0 -6.6
0.0
.GENERAL MOTORS
0








IMPORTS
2
3.4
11.4
44.7
0.4
-4.4
2.8
-85.9
31.5 -10.9
6.7
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
2
2.7
13.5
63.0
4.8
6.7
7.2
-20.1
11.0 -15.9
4.3
1974
4
11.2
11.2
44.0
10.5
-5.8
2.9
-80.4
19.3 -9.0
4.5
1975
0









* VEHICLE TYPE










AUTOMOBILE
6
8.4
11.4
50.4
12.9
-1.6
7.5
-60.3
34.9 -11.3
5.3
TRUCK
0









*VEHICLE OWNER










GSA
3
8.1
13.4
60.7
5.2
1.3
10.6
-38.5
32.8 -13.2
5.7
PRIVATE OWNER
3
8.7
12.1
40.0
8.1
-4.6
2.0
-82.1
23.2 -9.5
5.3
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
2
15.7
4.9
48.5
25.3
-1.7
4.7
-51.1
32.9 -9.8
4.4
NO CNV/NO APMP
4
4.8
12.5
51.3
7.8
-1.6
9.3
-64.9
39.8 -12.1
6.2
*DISPLACEMENT










LESS THAN 151
3
8. 7
12.1
40.0
8. 1
-4.6
2.0
-82.1
23.2 -9.5
5.3
151 - 250
1
19.0
0.0
56.2
0.0
-9.4
0.0
-75.3
0.0 -7.6
0.0
251 - 350
0








MORE THAN 350
2
2.7
13.5
63.0
4.8
6.7
7.2
-20.1
11.0 -15.9
4.3
*INERTIA WEIGHT










1800 - 2799
2
3.4
11.4
44.7
0.4
-4.4
2.8
-85.9
31.5 -10.9
6.7
2800 - 3799
2
19.0
0.1
43.4
18.1
-7.2
3.1
-74.8
0.7 -7.1
0.7
3800 - 4799
2
2.7
13.5
63.0
4.8
6.7
7.2
-20.1
11.0 -15.9
4.3
4800 - 5799
0









ALL VEHICLES
6
8.4
11.4
50.4
12.9
-1.6
7.5
-60.3
34.9 -11.3
5.3
AUTOMOTIVE TESTING LABORATORIES,INC.
. 19900 E. COLFAX, AURORA, COLO. 80011
E-22

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
4.32
0.0
22.54
0.0
581.2
0.0
4.36
0.00
14.1
0.0
CHRYSLER
2
2.74
0.1
24.49
9.5
485.9
157.8
3.42
.82
17.3
4.6
FORD MOTOR CO.
1
2.75
0.0
67.95
0.0
363.9
0.0
1.29
0.00
18.5
0.0
GENERAL MOTORS
0










IM PORTS
2
3.37
1.3
37.99
1.4
281.8
82.7
2.06
1.48
25.9
6.2
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
2
3.49
1.2
20. 16
3.4
589.3
11.5
4.18
.25
14.0
0.1
1974
4
3.08
0.8
43.78
16.4
325.5
69.5
2.06
1.06
22.7
5.2
1975
0










* VEHICLE TYPE











AUTOMOBILE
6
3.21
0.8
35.91
17.7
413.4
146.6
2.77
1.37
19.8
6.0
TRUCK
0










*VEHICLE OWNER











GSA
3
3.27
0.9
23.84
6.8
517.7
124.4
3.73
.79
16.2
3.7
PRIVATE OWNER
3
3.16
1.0
47.98
17.3
309.2
75.2
1.81
1.14
23.5
6.1
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
2
3.53
1.1
45. 24
32.1
4 72.5
153.7
2.82
2.17
16.3
3.1
NO CNV/NO APMP
4
3.05
0.8
31.24
9.6
383.9
156.4
2.74
1.25
21.6
6.7
*DISPLACEMENT











LESS THAN 151
3
3.16
1.0
47.98
17.3
309.2
75.2
1.81
1.14
23.5
6.1
151 - 250
1
2.82
0.0
31.20
0.0
374.3
0.0
2.84
0.00
20.5
0.0
251 - 350
0








MORE THAN 350
2
3.49
1.2
20. 16
3.4
589.3
11.5
4.18
.25
14.0
0.1
*INERTIA WEIGHT











1800 - 2799
2
3.37
1.3
37.99
1.4
281.8
82.7
2.06
1.48
25.9
6.2
2800 - 3799
2
2.78
0.0
49.57
26.0
369.1
7.4
2.06
1.10
19.5
1.4
3800 - 4799
2
3.49
1.2
20.16
3.4
589.3
11.5
4.18
.25
14.0
0.1
4800 - 5799
0










ALL VEHICLES
6
3.21
0.8
35.91
17.7
413.4
146.6
2.77
1.37
19.8
6.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-23

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1 -0.38
0.0
15.31
0.0
6.6
0.0 -0.89
0.00 -0.6
0.0
CHRYSLER
2 -0.10
0.7
11.26
10.5
16.1
22.9 -0.86
.06 -1.1
0.4
FORD MOTOR CO.
1 -0.69
0.0
10.05
0.0
31.6
0.0 -0.72
0.00 -1.6
0.0
GENERAL MOTORS
0







IMPORTS
2 0.26
0.0
24.34
3.5
-9.9
4.8 -0.83
.49 -1.9
0.3
*MODEL YEAR








1968
0







1969
0







1970
0







1971
0







1972
0







1973
2 -0.49
0.1
9.57
8.1
19.5
18.2 -0.85
.05 -0.7
0.1
1974
4 0.05
0.5
19.35
7.0
2.9
19.9 -0.82
.30 -1.7
0.3
1975
0







*VEHICLE TYPE








AUTOMOBILE
6 -0.13
0.5
16.09
8.3
8.4
19.4 -0.83
.23 -1.4
0.6
TRUCK
0







* VEHICLE OWNER








GSA
3 -0.19
0.5
12.61
7.8
12.9
17.1 -0.87
.05 -0.9
0.4
PRIVATE OWNER
3 -0.06
0.5
19.58
8.6
3.9
24.2 -0.79
.36 -1.8
0.3
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0







CNV/NO A.PMP
0







A.PMP/NO CNV
2 -0.53
0.2
12.68
3.7
19.1
17.7 -0.80
.12 -1.1
0.7
NO CNV/NO APMP
4 0.08
0.4
17.80
9.9
3.1
20.2 -0.85
.29 -1.5
0.6
*DISPLACEMENT








LESS THAN 151
3 -0.06
0.5
19.58
8.6
3.9
24.2 -0.79
.36 -1.8
0.3
151 - 250
1 0.39
0.0
18.69
0.0
-0.1
0.0. -0.91
0.00 -1.4
0.0
251 - 350
0







MORE THAN 350
2 -0.49
0.1
9.57
8.1
19.5
18.2 -0.85
•
0
Ln
1
O
0.1
*INERTIA WEIGHT








1800 - 2799
2 0.26
0.0
24.34
3.5.
-9.9
4.8 -0.83
.49 -1.9
0.3
2800 - 3799
2 -0.15
0.8
14.37
6.1
15.7
22.4 -0.81
.13 -1.5
0.2
3800 - 4799
2 -0.49
0.1
9.57
8.1
19.5
18.2 -0.85
.05 -0.7
0.1
4800 - 5799
0







ALL VEHICLES
6 -0.13
0.5
16.09
8.3
8.4
19.4 -0.83
.23 -1.4
0.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-24

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)

OF
HC

CO

CO 2
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
-9.6
0.0
40.4
0.0
1.1
0.0
-25.6
0.0
-4.7
0.0
CHRYSLER
2
-8.2
28.7
27.6
14.0
2.6
3.6
-36.5
15.1
-6.4
0.9
FORD MOTOR CO.
1
-33.5
0.0
12.9
0.0
8.0
0.0
-126.3
0.0
-9.4
0.0
GENERAL MOTORS
0










IMPORTS
2
7.5
2.9
39.0
4.3
-4.1
3.1
-75.0
19.6
-8.2
1.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
2
-19.1
13.3
29.1
16.1
3.1
2.8
-25.7
0.1
-5.2
0.7
1974
4
-1.6
21.5
32.1
13.1
-0.1
6.0
-80.9
34.9
-8.2
1.1
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
-7.4
19.8
31.1
12.5
1.0
5.1
-62.5
39.3
-7.2
1.8
TRUCK
0










*VEHICLE OWNER











GSA
3
-8. 7
20.3
31.9
12.3
2.1
2.7
-32.9
12.4
-5.8
1.2
PRIVATE OWNER
3
-6. 1
23.8
30.3
15.4
-0. 1
7.3
-92.1
32. 7
-8.6
1.0
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
2
-21.6
16.9
26.7
19.5
4.6
4.9
-76.0
71.2
-7.0
3.3
NO CNV/NO APMP
4
-0.3
19.0
33.3
10.7
-0.8
4.7
-55.7
26.5
-7.3
1.3
*DISPLACEMENT











LESS THAN 151
3
-6.1
23.8
30.3
15.4
-0.1
7.3
-92.1
32.7
-8.6
1.0
151 - 250
1
12.1
0.0
37.5
0.0
-0.0
0.0
-47.2
0.0
-7.0
0.0
251 - 350
0








MORE THAN 350
2
-19.1
13.3
29.1
16.1
3.1
2.8
-25.7
0.1
-5.2
0.7
*INERTIA WEIGHT











1800 - 2799
2
7.5
2.9
39.0
4.3
-4.1
3.1
-75.0
19.6
-8.2
1.0
2800 - 3799
2
-10.7
32.3
25.2
17.4
4.0
5.7
-86.7
56.0
-8.2
1.7
3800 - 4799
2
-19.1
13.3
29. 1
16.1
3.1
2.8
-25.7
0.1
-5.2
0.7
4800 - 5799
0









ALL VEHICLES
6
-7.4
19.8
31.1
12.5
1.0
5.1
-62.5
39.3
-7.2
1.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-25

-------
1973-1974 VEHICLES
DATA SET 3
9 VEHICLES
E-26

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
#	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.69 0.0 115.81 0.0 704.8 0.0 1.03 0.00 9.9 0.0
CHRYSLER	7 3.84 1.1 78.63 18.2 624.1 120.3 2.75 .77 12.0 2.3
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 4.72 0-0 62.29 0.0 349.1 0.0 1.21 0.00 19.2 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.83 1.0 81.55 22.5 608.2 152.3 2.43 1.04 12.6 3.5
1974	1 4.65 0.0 76.14 0.0 557.1 0.0 2.04 0.00 12.8 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE
6
3.76
1.1
76.98
20.7
541.0
138.1
2.30
1.03
13.8
3.4
TRUCK
3
4.24
1.1
88.87
24.1
725.4
26.0
2.55
,1.06
10.1
0.5
*VEHICLE OWNER











GSA
5
4.01
0.8
91.21
22.9
657.7
141.3
2.33
1.06
11.4
2.9
PRIVATE OWNER
4
3.81
1.4
68.11
10.1
533.4
129.9
2.46
1.03
14.1
3.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.20
0.9
81.62
24.8
630.3
154.1
2.58
1.04
12.1
3.2
NO CNV/NO APMP
5
4.50
0.7
80.41
20.8
580.2
148.2
2.23
1.02
13.0
3.7
^DISPLACEMENT











LESS THAN 151
1
4.72
0.0
62.29
0.0
349.1
0.0
1.21
0.00
19.2
0.0
151 - 250
1
3.64
0.0
73.65
0.0
407. 7
0.0
2.94
0.00
16.6
0.0
251 - 350
2
4.34
0.4
76.62
0.7
565.6
12.1
2.75
1.00
12.7
0.2
MORE THAN 350
5
3.65
1.3
87.87
26.9
706.9
36.2
2.36
1.09
10.4
0.9
*INERTIA WEIGHT











1800 - 2799
1
4.72
0.0
62.29
0.0
349. 1
0.0
1.21
0.00
19.2
0.0
2800 - 3799
3
4.11
0.5
75.63
1.8
513.0
91.6
2.81
.72
14.0
2.3
3800 - 4799
5
3.65
1.3
87.87
26.9
706.9
36.2
2.36
1.09
10.4
0.9
4800 - 5799
0








ALL VEHICLES
9
3.92
1.0
80.95
21.2
602.5
143.5
2.38
.98
12.6
3.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-27

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP)
1t	OF HC CO CO 2 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.11 0.0 42.58 0.0 625.7 0.0 3.24 0.00 12.6 0.0
CHRYSLER	7 3.15 0.9 46.50 12.6 631.8 127.5 3.20 .93 12.7 2.1
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 5.38 0.0 70.84 0.0 365.1 0.0 1.13 0.00 18.0 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.24 1.0 47.61 14.3 608.1 149.9 3.15 .97 13.2 2.7
1974	1 4.63 0.0 58.00 0.0 548.5 0.0 1.52 0.00 13.6 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 3.65 1.3 55.05 12.2 540.1 124.6 2.72 1.19 14.2 2.5
TRUCK	3 2.88 0.4 36.19 5.4 724.1 86.7 3.47 .61 11.3 1.2
*VEHICLE OWNER
GSA	5 3.03 0.4 43.39 13.4 642.6 147.6 3.28 .54 12.7 2.5
PRIVATE OWNER	4 3.84 1.6 55.48 12.6 550.1 134.5 2.59 1.50 14.0 2.7
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 2.90 0.8 46.49 13.1 635.5 168.7 3.34 .49 12.8 2.9
NO CNV/NO APMP	5 3.78 1.2 50.58 15.6 574.2 129.1 2.68 1.35 13.6 2.5
*DISPLACEMENT
LESS THAN 151
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
151 - 250
1
3.41
0.0
65.83
0. 0
414.9
0.0
2.73
0.00
16.8
0.0
251 - 350
2
4.12
0.7
55.33
3.8
577.6
41.2
2.89
1.93
13.1
0.6
MORE THAN 350
5
2.70
0.6
38.31
4.9
695.6
75.2
3.42
.44
11.7
1.0
*INERTIA WEIGHT











1800 - 2799
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
2800 - 3799
3
3.88
0.7
58.83
6. 6
523.4
98.4
2.83
1.37
14.3
2.2
3800 - 4799
5
2.70
0.6
38.31
4.9
695.6
75.2
3.42
.44
11.7
1.0
4800 - 5799
0










ALL VEHICLES
9
3.39
1.1
48.77
13.8
601.5
141.6
2.97
1.06
13.3
2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-28

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
4.91
0.0
33.34
0.0
598.5
0.0
3.51
0.00
13.3
0.0
CHRYSLER
7
3.32
1.0
37.67
11.2
582.0
96.9
3.84
1.14
13.8
1.9
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.00
21.4
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
3.50
1.1
36.14
9.5
563.7
124.0
3.70
1.22
14.6
3.3
1974
1
4.36
0.0
49.50
0.0
497.7
0.0
2.64
0.00
15.1
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
3.49
1.2
41.09
10.5
511.0
116.3
3.50
1.27
15.6
3.3
TRUCK
3
3.80
0.9
30.70
3.4
647.2
57.9
3.73
1.30
12.6
0.9
*VEHICLE OWNER











GSA
5
3.68
1.2
36.21
11.2
591.3
108.0
3.67
.92
13.7
2.2
PRIVATE OWNER
4
3.48
1.0
39.40
9.4
512.7
130. 5
3.47
1.63
15.8
3.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.35
1.5
39.60
11.4
578.1
111.3
4.06
.78
13.9
2.4
NO CNV/NO APMP
5
3.79
0.7
36.05
9.6
539.0
133.2
3.19
1.41
15.2
3.7
^DISPLACEMENT











LESS THAN 151
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.00
21.4
0.0
151 - 250
1
2.09
0.0
55.62
0.0
416.6
0.0
3.64
0.00
17.4
0.0
251 - 350
2
3.80
0.8
38.17
16.0
542.6
63.6
4.10
2.06
14.5
0.8
MORE THAN 350
5
3.69
1.2
33.01
4.6
634.1
46.1
3.72
.93
12.8
0.7
*INERTIA WEIGHT











1800 - 2799
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.00
21.4
0.0
2800 - 3799
3
3.23
1.1
43.99
15.2
500.6
85. 5
3.94
1.48
15.4
1.8
3800 - 4799
5
3.69
1.2
33.01
4.6
634.1
46.1
3.72
.93
12.8
0.7
4800 - 5799
0









ALL VEHICLES
9
3.59
1.1
37.63
9.9
556.4
118.1
3.58
1.20
14.6
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-29

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
if
OF
HC

CO

C02
NOX
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
3.11
0.0
42.58
0.0
625.7
0.0
3.24
0.00
CHRYSLER
7
3.15
0.9
46.50
12.6
631.8
127.5
3.20
.93
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
3.24
1.0
47.61
14.3
608.1
149.9
3.15
.97
1974
1
4.63
0.0
58.00
0.0
548.5
0.0
1.52
0.00
1975
0








*VEHICLE TYPE









AUTOMOBILE
6
3.65
1.3
55.05
12. 2
540.1
124.6
2.72
1.19
TRUCK
3
2.88
0.4
36.19
5.4
724.1
86.7
3.47
.61
*VEHICLE OWNER









GSA
5
3.03
0.4
43.39
13.4
642.6
147.6
3.28
.54
PRIVATE OWNER
4
3.84
1.6
55.48
12. 6
550.1
134.5
2.59
1.50
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
2.90
0.8
46.49
13. 1
635.5
168.7
3.34
.49
NO CNV/NO APMP
5
3.78
1.2
50.58
15.6
574.2
129.1
2.68
1.35
*DISPLACEMENT









LESS THAN 151
1
5..38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
151 - 250
1
3.41
0.0
65.83
0. 0
414.9
0.0
2.73
0.00
251 - 350
2
4.12
0.7
55.33
3.8
577.6
41.2
2.89
1.93
MORE THAN 350
5
2.70
0.6
38.31
4.9
695.6
75.2
3.42
.44
*INERTIA WEIGHT









1800 - 2799
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
2800 - 3799
3
3.88
0.7
58.83
6.6
523.4
98.4
2.83
1.37
3800 - 4799
5
2.70
0.6
38.31
4.9
695.6
75.2
3.42
.44
4800 - 5799
0








ALL VEHICLES
9
3.39
1.1
48.77
13.8
601.5
141.6
2.97
1.06
MPG
MEAN S.D.
0.0
2.1
0.0
2.7
0.0
2.5
1.2
2.5
2.7
2.9
2.5
0.0
0.0
0.6
1.0
0.0
2.2
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-30

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
it OF HC
VEH. MEAN S.D.
CO	C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
0.58
0.69
1
7
0
0
1	-0.66
0
0
0
0
0
8
1
0
6
3
0.0 73.23 0.0 79.1 0.0 -2.21 0.00 -2.7 0.0
1.0 32.13 22.8 -7.7 38.6 -0.45 .66 -0.7 0.9
0.0 -8.55 0.0 -16.0 0.0 0.08 0.00 1.2 0.0
0.59 1.0 33.93 29.8 0.1 47.5 -0.73 .79 -0.7 1.3
0.02 0.0 18.14 0.0 8.6 0.0 0.52 0.00 -0.7 0.0
0.11
1.36
0.4
1.4
21.93
52.68
5 0.98 1.1 47.82
4 -0.04 0.5 12.63
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4
NO CNV/NO APMP	5
~DISPLACEMENT
0.30
0.71
0.2
1.3
35.12
29.83
27.6
19.5
27.7
14.5
29.5
30.8
0.9
1.3
15.1
-16.6
41.0 -0.42
61.0 -0.92
56.2 -0.95
18.1 -0.13
.99 -0.4
.46 -1.2
.92 -1.3
.56 0.1
-5.2 61.4 -0.76 1.04 -0.7
6.0 32.7 -0.45 .77 -0.6
1.3
1.2
1.2
0.8
1.3
1.3
LESS THAN 151
1
-0.66
0.0
-8.55
0.0
-16.0
0.0 0.08
0.00 1.2
0.0
151 - 250
1
0.23
0.0
7.82
0.0
-7.2
0.0 0.21
0.00 -0.2
0.0
251 - 350
2
0.22
0.3
21. 29
4.5
-12.0
29.1 -0.14
.93 -0.4
0.4
MORE THAN 350
5
0.95
1.1
49.55
24.7
11.3
58.7 -1.06
.76 -1.3
1.3
~INERTIA WEIGHT









1800 - 2799
1
-0.66
0.0
-8.55
0.0
-16.0
0.0 0.08
0.00 1.2
0.0
2800 - 3799
3
0.22
0.2
16.80
8.4
-10.4
20.8 -0.02
.68 r0.3
0.3
3800 - 4799
5
0.95
1.1
49.55
24. 7
11.3
58.7 -1.06
.76 -1.3
1.3
4800 - 5799
0








ALL VEHICLES
9
0.53
1.0
32. 18
28.4
1.0
44.5 -0.59
.85 -0.7
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-31

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
15.7
0.0
63.2
0.0
11.2
0.0
-214.6
0.0
-27.8
0.0
CHRYSLER
7
15.3
18.3
38.6
19.9
-1.3
5.5
-21.6
42.4
-6.3
9.1
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
o
•
(
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
13.5
19.4
37.0
28.0
-0.5
6.9
-48.1
76.5
-7.4
12.6
1974
1
0.4
0.0
23.8
0.0
1.5
0.0
25.5
0.0
-5.7
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
3.8
10.2
24.1
25.4
-0.6
6.3
-34.8
89.6
-4.9
11.9
TRUCK
3
28.6
22.6
58.4
5.7
0.4
8.3
-50.0
51.1
-12.0
12.2
* VEHICLE OWNER











GSA
5
21.6
19.0
49.8
22.4
2.1
7.8
-71.5
91.2
-13.0
12.9
PRIVATE OWNER
4
0.2
10.3
17.7
21.2
-3.2
3.2
-0.4
21.1
-0.1
5.0
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PHP
0










A.PMP/NO CNV
4
8.6
5.1
39.1
23.9
-0.8
8.6
-59.8
103.8
-7.3
13.7
NO CNV/NO APMP
5
14.9
25.6
32.7
31.0
0.2
5.4
-24.0
51.6
-7.2
11.7
*DISPLACEMENT











LESS THAN 151
1
-14.0
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
0.0
151 - 250
1
6.3
0.0
10.6
0.0
-1.8
0.0
7.1
0.0
-1.1
0.0
251 - 350
2
5.4
7.1
27.8
5.6
-2.1
5.1
1.3
34.2
-3.4
3.3
MORE THAN 350
5
21.1
19.5
53.5
14.4
1.7
8.2
-75.1
87.6
-12.8
13.2
*INERTIA WEIGHT











1800 - 2799
1
-14.0
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
0.0
2800 - 3799
3
5.7
5.0
22.0
10.7
-2.0
3.6
3.3
24.4
-2.6
2.7
3800 - 4799
5
21.1
19.5
53.5
14.4
1.7
8.2
-75.1
87.6
-12.8
13.2
4800 - 5799
0










ALL VEHICLES
9
12.1
18.6
35.5
26.5
-0.2
6.5
-39.9
75.7
-7.2
11.8
AUTOMOTIVE TESTING LABORATORIES,INC.
.19900 E. COLFAX, AURORA, COLO. 80011
E-32

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
if	OF HC	CO	CO2	NOX	MPG.
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 4.91 0.0 33.34 0.0 598.5 0.0 3.51 0.00 13.3 0.0
CHRYSLER	7 3.32 1.0 37.67 11.2 582.0 96.9 3.84 1.14 13.8 1.9
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 4.19 0.0 41.63 0.0 335.4 0.0 1.80 0.00 21.4 0.0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.50 1.1 36.14 9.5 563.7 124.0 3.70 1.22 14.6 3.3
1974	1 4.36 0.0 49.50 0.0 497.7 0.0 2.64 0.00 15.1 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 3.49 1.2 41.09 10.5 511.0 116.3 3.50 1.27 15.6 3.3
TRUCK	3 3.80 0.9 30.70 3.4 647.2 57.9 3.73 1.30 12.6 0.9
*VEHICLE OWNER
GSA	5 3.68 1.2 36.21 11.2 591.3 108.0 3.67 .92 13.7 2.2
PRIVATE OWNER	4 3.48 1.0 39.40 9.4 512.7 130.5 3.47 1.63 15.8 3.9
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 3.35 1.5 39.60 11.4 578.1 111.3 4.06 .78 13.9 2.4
NO CNV/NO APMP	5 3.79 0.7 36.05 9.6 539.0 133.2 3.19 1.41 15.2 3.7
~DISPLACEMENT
LESS THAN
151
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.00
21.4
0.0
151 - 250

1
2.09
0.0
55.62
0.0
416. 6
0.0
3.64
0.00
17.4
0.0
251 - 350

2
3.80
0.8
38.17
16.0
542.6
63.6
4. 10
2.06
14.5
0.8
MORE THAN
350
5
3.69
1.2
33.01
4.6
634.1
46. 1
3.72
.93
12.8
0.7
~INERTIA WEIGHT
1800 - 2799
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.00
21.4
0.0
2800 - 3799
3
3.23
1.1
43.99
15.2
500.6
85. 5
3.94
1.48
15.4
1.8
3800 - 4799
5
3.69
1.2
33.01
4.6
634.1
46.1
3.72
.93
12.8
0.7
4800 - 5799
0









ALL VEHICLES
9
3.59
1.1
37.63
9.9
.556.4
118.1
00
m
•
1.20
14.6
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-33

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
J? OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
-1.22
0.0
82.47
0.0
106.3
0.0 -2.48
0.00 -3.4
0.0
CHRYSLER
7
0.52
1.2
40.96
24.9
42.1
53.1 -1.10
.75 -1.8
0.8
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
0.53
0.0
20.66
0.0
13.7
0.0 -0.59
0.00 -2.2
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
0.33
1.3
45.40
28.0
44.4
55.5 -1.27
.85 -2.0
1.0
1974
1
0.29
0.0
26.64
0.0
59.4
0.0 -0.60
0.00 -2.2
0.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
6
0.27
0.9
35.89
25.9
30.0
45.6 -1.20
.85 -1.8
1.0
TRUCK
3
0.44
1.9
58.17
27.1
78.2
57.9 -1.17
.97 -2.5
0.5
*VEHICLE OWNER









GSA
5
0.33
1.7
55.00
30.1
66.4
59.9 -1.34
.96 -2.3
1.0
PRIVATE OWNER
4
0.33
0.5
28.71
14.9
20.7
30.1 -1.01
.72 -1.7
0.7
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
-0.15
1.2
42.01
31.0
52.2
54.2 -1.48
.89 -1.8
1.3
NO CNV/NO APMP
5
0.71
1.2
44.36
27.0
41.2
56.3 -0.97
.80 -2.2
0.6
~DISPLACEMENT









LESS THAN 151
1
0.53
0.0
20.66
0.0
13.7
0.0 -0.59
0.00 -2.2
0.0
151 - 250
1
1.55
0.0
18.03
0.0
-8.9
0.0 -0.70
0.00 -0.8
0.0
251 - 350
2
0.53
0.3
38.45
16.7
23.0
51.5 -1.35
1.05 -1.8
0.6
MORE THAN 350
5
-0.04
1.6
54.85
30.3
72.8
50.9 -1.35
.95 -2.3
1.0
~INERTIA WEIGHT









1800 - 2799
1
0.53
0.0
20.66
0.0
13.7
0.0 -0.59
0.00 -2.2
0.0
2800 - 3799
3
0.87
0.6
31.64
16.7
12.4
40.8 -1.13
.83 -1.5
0.7
3800 - 4799
5
-0.04
1.6
54.85
30.3
72.8
50.9 -1.35
.95 -2.3
1.0
4800 - 5799
0








ALL VEHICLES
9
0.33
1.2
43.32
27.0
46.1
52.1 -1.19
.83 -2.0
0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-34

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	7
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8
1974	1
1975	0
*VEHICLE TYPE
AUTOMOBILE	6
TRUCK	3
* VEHICLE OWNER
GSA	5
PRIVATE OWNER	4
-33. 1
9.1
4.5
6.2
5.1
3.8
0.0
28.9
71.2
49.3
30.7
0.0
26.
39,
51.8
35.0
43.2
63.3
4.2 38.5 57.1
5.2 15.1 40.9
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4
NO CNV/NO APMP	5
^DISPLACEMENT
-5.9
13. 1
33.3
24.9
47.2
52.1
0.0
19.7
11. 2 0.0 33.2 0.0
20.1
0.0
19.8
12.5
20.6
16.3
23.2
18.7
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
15.1 0.0 -240.8 0.0 -34.8 0.0
6.0 7.8 -44.5 35.5 -16.1 8.9
3.9 0.0 -48.8 0.0 -11.6 0.0
6.3
10.7
4.8
10.7
9.0
3.9
7.0
6.6
7.8 -71.5
0.0 -29.4
7.0	-71.3
8.1	-57.8
8.7 -87.6
5.3 -40.8
75.6 -17.7 10.8
0.0 -17.4 0.0
84.3 -14.4 10.9
53.5 -24.3 3.5
94.8 -22.5 11.2
16.7 -11.7 4.3
7.8 -87.5 103.6 -17.3 14.1
8.1 -50.3 39.8 -18.0 7.4
LESS THAN
151
1
11.2
0.0
33.2
0.0
3.9
0.0
-48.8
0.0 -11.6
0.0
151 - 250

1
42.6
0.0
24.5
0.0
-2.2
0.0
-23.8
0.0 -4.8
0.0
251 - 350

2
12.8
9.3
50. 1
21.4
4.2
9.2
-44.9
21.9 -14.0
4.7
MORE THAN
350
5
-7.5
32.3
58.3
18.3
10. 2
7.1
-87.8
94.6 -23.0
10.3
*INERTIA WEIGHT
1800 - 2799
1
11.2
0.0
33.2
0.0
3.9
0.0
-48.8
0.0 -11.6
0.0
2800 - 3799
3
22.7
18.4
41.6
21.1
2.0
7.5
-37.9
19.7 -10.9
6.3
3800 - 4799
5
-7.5
32.3
58.3
18.3
10. 2
7.1
-87.8
94.6 -23.0
10. 3
4800 - 5799
0









ALL VEHICLES
9
4.7
28.7
49.9
19.6
6.8
7.4
-66.8
72.1 -17.7
10.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-35

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
( BASELINE—TUNEUP / PARAD J / DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
3.60
0.0
46.38
0.0
598.6
0.0
2.44
0.00
13.0
0.0
CHRYSLER
7
4.06
2.0
42.38
22.0
567.5
89.2
4.11
.97
13.8
1.6
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
»
00
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
3.62
1.1
37.99
12.1
554.1
114.6
3.82
1.22
14.6
3.0
1974
1
7.95
0.0
84.21
0.0
475.9
0.0
2.36
0.00
14.0
0.0
1975
0










* VEHICLE. TYPE











AUTOMOBILE
6
4.07
2.2
48.56
20.5
508.2
117.9
3.21
1.30
15.3
3.2
TRUCK
3
4.15
0.9
32.26
12. 1
619.9
37.5
4.56
.32
13.0
0.4
*VEHICLE OWNER











GSA
5
3.88
0.7
40.06
14.2
575.0
92.8
4.06
.95
13.8
1.9
PRIVATE OWNER
4
4.37
2.7
46.96
25.9
508.4
132.9
3.15
1.51
15.4
3.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.41
1.5
43.93
11.5
558.4
98.2
3.65
.98
14.1
2.1
NO CNV/NO APMP
5
4.64
2.0
42.49
25.1
535.0
129.6
3.66
1.54
14.9
3.4
~DISPLACEMENT











LESS THAN 151
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
151 - 250
1
3.35
0.0
57. 16
0.0
416.8
0.0
4.21
0.00
17.2
0.0
251 - 350
2
5.53
3.4
56.79
38.8
527.4
72.9
3.77
2.00
14.0
0.0
MORE THAN 350
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
*INERTIA WEIGHT











1800 - 2799
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
2800 - 3799
3
4.81
2.7
56.91
27.4
490.6
82.1
3.92
1.44
15.0
1.8
3800 - 4799
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
4800 - 5799
0










ALL VEHICLES
9
4.10
1.8
43.13
19.1
545.4
110.3
3.66
1.24
14.5
2.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-36

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973—1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 0.09 0.0 69.43 0.0 106.2 0.0 -1.41 0.00 -3.1 0.0
CHRYSLER	7 -0.22 1.7 36.25 28.4 56.6 65.6 -1.36 .91 -1.8 1.1
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 -0.13 0.0 17.21 0.0 11.8 0.0 -0.51 0.00 -1.7 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 0.21 1.0 43.55 23.6 54. 1 65. 1 -1.39 .81 -2. 1 1.1
1974	1 -3.30 0.0 -8.07 0.0 81.2 0.0 -0.32 0.00 -1.2 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 -0.31 1.5 28.42 27.0 32.9 48.5 -0.91 .64 -1.5 0.9
TRUCK	3 0.09 1.7 56.61 22.7 105.5 63.2 -2.00 .77 -2.9 0.6
*VEHICLE OWNER
GSA	5 0.13 1.2 51.15 25.7 82.7 68.1-1.74 .65-2.5 1.1
PRIVATE OWNER	4-0.56 1.9 21.15 23.2 25.1 38.3-0.69 .70-1.3 0.3
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4-0.22 0.9 37.69 22.8 71.9 86.9 -1.07 .59-2.0 1.5
NO CNV/NO APMP	5 -0.15 1.9 37.92 34.3 45.3 39.0 -1.43 1.04 -1.9 0.7
*DISPLACEMENT
LESS THAN 151	1 -0.13 0.0 17.21 0.0 11.8 0.0 -0.51 0.00 -1.7 0.0
151 - 250	1 0.29 0.0 16.49 0.0 -9.1 0.0 -1.27 0.00 -0.6 0.0
251 - 350	2 -1.19 3.0 19.83 39.5 38.2 60.8 -1.02 1.00 -1.3 0.2
MORE THAN 350	5 0.13 1.2 53.40 22.2 87.0 61.3-1.52 .95-2.5 1.0
*INERTIA WEIGHT
1800 - 2799	1 -0.13 0.0 17.21 0.0 11.8 0.0 -0.51 0.00 -1.7 0.0
2800 - 3799	3 -0.70 2.3 18.72 28.0 22.4 50.9 -1.11 .72 -1.1 0.5
3800 - 4799	5 0.13 1.2 53.40 22.2 87.0 61.3 -1.52 .95 -2.5 1.0
4800 - 5799	0
ALL VEHICLES 9-0.18 1.5 37.82 28.0 57.1 61.6-1.27 .84-2.0 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-37

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	7
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
*MODEL YEAR
2.4
-5.0
0.0
37.9
60.0
44.5
0.0
29.8
-2.8 0.0 27.6 0.0
15.1 0.0-136.9 0.0 -31.6 0-0
8.1 9.3 -61.5 70.4 -16.9 11.9
3.4 0.0 -42.1 0.0 -9.1 0-0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8
1974	1
1975	0
*VEHICLE TYPE
AUTOMOBILE	6
TRUCK	3
*VEHICLE OWNER
GSA	5
PRIVATE OWNER	4
4.4 22.7 51.2
-71.0 0.0 -10.6
-4.2
-3.4
0.0
-9.0
33.9 35.0
38.2 63.1
27.5
42.7
54.3
31.9
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
18.6
0.0
27.7
14.6
20.7
31.7
7.5
14.6
5.3
14.4
8.8 -74.2
0.0 -15.7
7.6 -49.1
8.0 -105.1
11.2 9.4 -99.1
4.7 6.8 -28.6
68.1 -18.7 12.2
0.0 -9.2 0.0
46.3 -12.2
96.1 -28.6
9.9
7.0
76.0 -24.1 12.7
20.8 -9.5 1.5
A.PMP/NO CNV
4
-4.0
25.7
44.4
15.8
9.6
11.9
-57.5
55.7
-19.6
16.1
NO CNV/NO APMP
5
-3.9
40.9
44.4
35.7
7.3
6.1
-75.9
79.7
-16.1
8.9
~DISPLACEMENT











LESS THAN 151
1
-2.8
0.0
27.6
0.0
3.4
0.0
-42.1
0.0
-9.1
0.0
151 - 250
1
8.0
0.0
22.4
0.0
-2.2
0.0
-43.2
0.0
-3.4
0.0
251 - 350
2
-24.2
66.1
25.7
51.3
6.9
10.9
-32.8
24.3
-10.4
1.7
MORE THAN 350
5
1.5
28.2
59.6
12.1
12.0
8.0
-91.7
84.1
-25.1
10.8
~INERTIA WEIGHT











1800 - 2799
1
-2.8
0.0
27.6
0.0
3.4
0.0
-42.1
0.0
-9.1
0.0
2800 - 3799
3
-13.5
50.3
24.6
36.3
3.8
9.3
-36.3
18.2
-8.1
4.2
3800 - 4799
5
1.5
28.2
59.6
12.1
12.0
8.0
-91.7
84.1
-25.1
10.8
4800 - 5799
0










ALL VEHICLES
9
-4.0
32.9
44.4
27.0
8.3
8.5
-67.7
66.6
-17.6
11.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-38

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
if	OF HC CO C02 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.60 0.0 46.38 0-0 598.6 0.0 2.44 0.00 13.0 0.0
CHRYSLER	7 4.06 2.0 42.38 22.0 567.5 89.2 4.11 .97 13.8 1.6
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 4.85 0.0 45.08 0.0 337.3 0.0 1.72 0.00 21.0 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.62 1.1 37.99 12.1 554.1 114.6 3.82 1.22 14.6 3.0
1974	1 7.95 0.0 84.21 0.0 475.9 0.0 2.36 0.00 14.0 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 4.07 2.2 48.56 20.5 508.2 117.9 3.21 1.30 15.3 3.2
TRUCK	3 4.15 0.9 32.26 12.1 619.9 37.5 4.56 .32 13.0 0.4
*VEHICLE OWNER
GSA	5 3.88 0.7 40.06 14.2 575.0 92.8 4.06 .95 13.8 1.9
PRIVATE OWNER	4 4.37 2.7 46.96 25.9 508.4 132.9 3.15 1.51 15.4 3.7
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 3.41 1.5 43.93 11.5 558.4 98.2 3.65 .98 14.1 2.1
NO CNV/NO APMP	5 4.64 2.0 42.49 25.1 535.0 129.6 3.66 1.54 14.9 3.4
DISPLACEMENT
LESS THAN 151
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
151 - 250
1
3.35
0.0
57.16
0.0
416.8
0.0
4.21
0.00
17.2
0.0
251 - 350
2
5.53
3.4
56.79
38.8
527.4
72.9
3.77
2.00
14.0
0.0
MORE THAN 350
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
*INERTIA WEIGHT











1800 - 2799
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
2800 - 3799
3
4.81
2.7
56.91
27.4
490.6
82.1
3.92
1.44
15.0
1.8
3800 - 4799
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
ALL VEHICLES 9 4.10 1.8 43.13 19.1 545.4 110.3 3.66 1.24 14.5 2.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-39

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 -0.49 0.0 -3.80 0.0 27.1 0.0 0.80 0.00 -0.4 0.0
CHRYSLER	7 -0.91 1.3 4.11 15.9 64.2 82.9 -0.91 .54 -1.2 1.1
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 0.53 0.0 25.76 0.0 27.8 0.0 -0.59 0.00 -3.0 0.0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 -0.38 0.8 9.62 11.2 54.0 78.4 -0.67 .78 -1.4 1.2
1974	1 -3.32 0.0 -26.21 0.0 72.6 0.0 -0.84 0.00 -0.4 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6-0.42 1.5 6.49 19.3 32.0 24.1-0.48 .82-1.1 1.0
TRUCK	3 -1.28 0.5 3.93 8.8 104.3 122.5 -1.09 .35 -1.7 1.6
*VEHICLE OWNER
GSA	5 -0.85 0.7 3.33 7.7 67.6 100.6 -0.79 .94 -1.2 1.3
PRIVATE OWNER	4 -0.52 1.9 8.52 24.0 41.7 21.2 -0.56 .49 -1.4 1.1
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 -0.51 0.9 2.57 8.6 77.1 113.0 -0.32 1.00 -1.3 1.5
NO CNV/NO APMP	5-0.86 1.6 8.09 20.8 39.3 21.4-0.98 .31-1.3 1.0
~DISPLACEMENT
LESS THAN
151
1 0.53
0.0
25.76
0.0
27.8
0.0 -0.59
0.00 -3.0
0.0
151 - 250

1 0.06
0.0
8.67
0.0
-1.9
0.0 -1.48
0.00 -0.4
0.0
251 - 350

2 -1.41
2.7
-1.46
35.0
50. 2
31.7 -0.89
.07 -0.9
0.6
MORE THAN
350
5 -0.82
0.8
3.85
8.2
75.7
95.1 -0.46
.92 -1.3
1.3
~INERTIA WEIGHT
1800 - 2799
1
0.53
0.
0
25.76
0.0
27.
8
0.0
-0.59
0.00
-3.0
2800 - 3799
3
-0.92
2.
1
1.92
25.4
32.
8
37.5
-1.09
.34
-0.7
3800 - 4799
5
-0.82
0.
8
3.85
8.2
75.
7
95.1
-0.46
.92
-1.3
4800 - 5799
0











ALL VEHICLES
9
1
o
•
1.
3
5.64
15.9
56.
1
73.6
-0.69
.74
-1.3
0.0
0.5
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-40

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(L973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO	CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	7
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
*MODEL YEAR
-15.8
-25.0
0.0
34.1
-8.9
11.0
0.0
31.5
9.9 0.0 36.4 0.0
4.3 0.0 24.7 0.0 -2.9 0.0
9.0 10.1 -32.5 22.3 -10.3 11.2
7.6 0.0 -52.2 0.0 -16.6 0.0
1968
1969
1970
1971
1972
1973
1974
1975
0
0
0
0
0
8
1
0
-13.6
-71.7
26.9 18.7
0.0 -45.2
22.0
0.0
7.7
13.2
9.3 -24.9
0.0 -55.3
28.4 -11.0 10.7
0.0 -3.3 0.0
*VEHICLE TYPE
AUTOMOBILE	6 -8.4	32.8	11.2
TRUCK	3	-43.5	10.0	12.3
*VEHICLE OWNER
CSA	5	-28.9	22.1	8.2
PRIVATE OWNER	4	-9.1	41.8	15.8
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4
NO CNV/NO APMP	5
^DISPLACEMENT
-14.3
-24.8
29.4
36.1
4. 1
17.6
33.4 5.8 4.5 -25.8
26.6 13.3 14.4 -33.2
21.1	8.7 12.1 -25.8
41.2	7.8 3.9 -31.4
20.1 9.8 13.6 -11.0
36.7 7.1 3.9 -42.1
34.1 -7.3 5.6
16.5 -15.9 16.5
31.9 -10.6 13.8
28.0 -9.6 5.5
33.8 -12.0 15.3
15.0 -8.6 5.4
LESS THAN 151
1
9.9
0.0
36.4
0.0
7.6
0.0
-52.2
0.0
-16.6
0.0
151 - 250
1
1.8
0.0
13.2
0.0
-0.5
0.0
-54.2
0.0
-2.3
0.0
251 - 350
2
-29.1
60.3
-0.5
63.2
8.9
6.1
-38.7
23.4
-6.9
5.0
MORE THAN 350
5
-26.9
25.8
11.2
22.9
9.9
11.2
-14.2
29.5
-11.7
13.1
*INERTIA WEIGHT











1800 - 2799
1
9.9
0.0
36.4
0.0
7.6
0.0
-52.2
0.0
-16.6
0.0
2800 - 3799
3
-18.8
46.2
4. 1
45.4
5.8
6.9
-43.9
18.8
-5.4
4.4
3800 - 4799
5
-26.9
25.8
11.2
22.9
9.9
11.2
-14.2
29.5
-11.7
13.1
4800 - 5799
0










ALL VEHICLES
9
-20.1
31.7
11.6
29.6
8.3
00
•
-28.3
28.5
-10.2
10.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-41

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
If
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
3.60
0.0
46.38
0.0
598.6
0.0
2.44
0.00
13.0
0.0
CHRYSLER
7
4.06
2.0
42.38
22.0
567.5
89.2
4.11
.97
13.8
1.6
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
3.62
1.1
37.99
12.1
554. 1
114.6
3.82
1.22
14.6
3.0
1974
1
7.95
0.0
84.21
0.0
475.9
0.0
2.36
0.00
14.0
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
4.07
2.2
48.56
20.5
508.2
117.9
3.21
1.30
15.3
3.2
TRUCK
3
4.15
0.9
32.26
12.1
619.9
37.5
4.56
.32
13.0
0.4
* VEHICLE OWNER











GSA
5
3.88
0.7
40.06
14.2
575.0
92.8
4.06
.95
13.8
1.9
PRIVATE OWNER
4
4.37
2.7
46.96
25.9
508.4
132.9
3.15
1.51
15.4
3.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.41
1.5
43.93
11.5
558.4
98.2
3.65
.98
14.1
2.1
NO CNV/NO APMP
5
4.64
2.0
42.49
25. 1
535.0
129.6
3.66
1.54
14.9
3.4
*DISPLACEMENT











LESS THAN 151
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
151 - 250
1
3.35
0.0
57.16
0.0
416.8
0.0
4.21
0.00
17.2
0.0
251 - 350
2
5.53
3.4
56.79
38.8
527.4
72.9
3.77
2.00
14.0
0.0
MORE THAN 350
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
*INERTIA WEIGHT











1800 - 2799
1
4.85
0.0
45.08
0.0
337.3
0.0
1.72
0.00
21.0
0.0
2800 - 3799
3
4.81
2.7
56.91
27.4
490.6
82.1
3.92
1.44
15.0
1.8
3800 - 4799
5
3.52
1.3
34.47
10.9
619.9
30.5
3.89
1.00
13.0
0.3
4800 - 5799
0










ALL VEHICLES 9 4.10 1.8 43.13 19.1 545.4 110.3 3.66 1.24 14.5 2.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-42

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
9 OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	7
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1.31 0.0-13.04 0.0 -0.1 0.0 1.07 0.00 0.3 0.0
-0.74 1.5 -4.71 16.5 14.4 49.4 -0.26 .95 -0.0 0.8
-0.66 0.0 -3.45 0.0 -1.9 0.0 0.08 0.00 0.5 0.0
1973
1974
1975
8 -0.12
1 -3.59
0
0.9
0.0
-1.85
-34.71
10. 2
0.0
9.7
21.8
46.1
0.0
-0.12
0.28
.99
0.00
-0.1
1.1
0.7
0.0
*VEHICLE TYPE










AUTOMOBILE
TRUCK
6 -0.58
3 -0.35
1.7
0.8
-7.47
-1.56
15.3
15.0
2.9
27.3
11.2
81.2
0.30
-0.83
.54
1.21
0.3
-0.4
0.4
1.0
*VEHICLE OWNER










GSA
PRIVATE OWNER
5 -0.20
4 -0.89
1.1
1.9
-3.85
-7.56
11.8
19.2
16.3
4.4
59.4
14.1
-0.40
0.32
1. 19
. 20
-0.1
0.3
0.8
0.6
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
0
0
4	-0.07
5	-0.86
1.2
1.6
-4.33
-6.44
11.3
18.0
19.7
4.1
47.3
44.1
0.41
-0.47
.69
.98
-0.2
0.3
0.7
0.7
^DISPLACEMENT










LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1 -0.66
1	-1.26
2	-1.73
5 0. 17
0.0
0.0
2.6
1.0
-3.45
-1.54
-18.62
-1.45
0.0
0.0
22.8
13.5
-1.9
-0.2
15.2
14.2
0.0
0.0
9.3
60.3
0.08
-0.57
0.32
-0.17
0.00
0.00
.06
1.	26
0.5
0.2
0.5
-0.2
0.0
0.0
0.8
0.8
*INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
1 -0.66
3 -1.57
5 0.17
0.0
1.9
1.0
-3.45
-12.93
-1.45
0.0
18.9
13.5
-1.9
10.1
14.2
0.0
11.1
60. 3
0.08
0.02
-0.17
0.00
.52
1 .26
0.5
0.4
-0.2
0.0
0.6
0.8
4800 - 5799
ALL VEHICLES
9 -0.51 1.4 -5.50 14.5 11.0 43.3 -0.08 .93 0.1 0.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-43

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
#
OF
HC
CO

C02
NOX
MPG

VEH.
MEAN
S.D. MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
26.7
0.0 -39.1
0.0
-0.0
0.0
30.5
0.0
2.4
0.0
CHRYSLER
7
-20.9
39.8 -11.5
39.5
2.1
7.8
-10.8
29.3
-0.6
6.0
FORD MOTOR CO.
0









GENERAL MOTORS
0









IMPORTS
1
-15.8
0.0 -8.3
0.0
-0.6
0.0
4.4
0.0
2.2
0.0
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
8
-6.6
30.2 -7.2
30.6
1.2
7.2
-6.4
30.4
-0.8
5.1
1974
1
-82.3
0.0 -70.1
0.0
4.4
0.0
10.6
0.0
7.0
0.0
1975
0









*VEHICLE TYPE










AUTOMOBILE
6
-16.8
45.6 -17.2
33.3
0.6
2.1
8.5
15.0
1.8
2.9
TRUCK
3
-11.5
22.6 -8.1
46.7
3.5
12.9
-30.5
35.7
-3.5
8.1
*VEHICLE OWNER










GSA
5
-13.6
34.8 -13.3
36.1
2.1
9.3
-15.3
36.5
-1.4
6.5
PRIVATE OWNER
4
-16.8
47.0 -15.4
40.1
0.9
2.7
9.0
4.5
1.8
3.7
"CONTROL OPTIONS
! (CONVERTER,AIR PUMP)







CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
-6.9
42.1 -14.9
33.2
2.9
7.1
10.1
19.2
-1.9
5.7
NO CNV/NO APMP
5
-21.6
37.8 -13.6
41.1
0.5
7.2
-16.1
32.0
1.6
5.3
"DISPLACEMENT










LESS THAN 151
1
-15.8
0.0 -8.3
0.0
-0.6
0.0
4.4
0.0
2.2
0.0
151 - 250
1
-60.3
0.0 -2.8
0.0
-0.0
0.0
-15.7
0.0
1.3
0.0
251 - 350
2
-39.2
61.1 -39.8
42.9
2.9
2.1
8.5
2.9
3.1
5.5
MORE THAN 350
5
3.8
26.4 -7.4
40.3
1.8
9.5
-9.2
38.9
-1.9
6.3
"INERTIA WEIGHT










1800 - 2799
1
-15.8
0.0 -8.3
0.0
-0.6
0.0
4.4
0.0
2.2
0.0
2800 - 3799
3
-46.2
44.9 -27.4
37.1
1.9
2.3
0.5
14.1
2.5
4.0
3800 - 4799
5
3.8
26.4 -7. '4
40.3
1.8
9.5
-9.2
38.9
-1.9
6.3
4800 - 5799
0









ALL VEHICLES
9
-15.0
37.9 -14.2
35.5
1.6
6.8
-4.5
29.0
0.0
5.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E.^COLFAX, AURORA, COLO. 80011
E-44

-------
1973-1974 VEHICLES
DATA SET A
15 VEHICLES
E-45

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
4.30
0.9
91.44
34.5
647.6
80.8
2.22
1.68
11.2
1.8
CHRYSLER
9
3.65
1.1
73.96
19.5
598.7
142.9
2.71
.83
12.8
3.1
FORD MOTOR CO.
1
3.40
0.0
97.95
0.0
346.4
0.0
0.74
0.00
17.4
0.0
GENERAL MOTORS
0










IMPORTS
3
3.86
1.0
66.56
4.3
295.8
68.7
1.20
.71
21.9
3.8
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
3.80
1.1
76.35
23.3
613.3
136.3
2.64
1.02
12.5
3.1
1974
5
3.68
0.7
76.54
12.4
356.8
123.5
1.36
.70
19.2
4.9
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
3.64
0.9
73.30
18.5
478.4
165.1
2.13
1.13
15.8
4.8
TRUCK
3
4.24
1.1
88.87
24.1
725.4
26.0
2.55
1.06
10.1
0.5
* VEHICLE OWNER











GSA
8
3.87
0.9
79.79
24.7
612.3
154.8
2.53
1.02
12.5
3.5
PRIVATE OWNER
7
3.64
1.0
72.54
13.3
431.2
161.9
1.85
1. 14
17.2
5.2
*C0NTR0L OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
6
3.52
1.0
81.92
21.6
576.4
164.9
2.41
1.20
13.0
3.2
NO CNV/NO APMP
9
3.92
0.9
72.74
19.0
495.4
189.7
2.08
1.07
15.8
5.6
*DISPLACEMENT











LESS THAN 151
4
3.75
0.8
74.41
16.1
308.4
61.6
1.08
.62
20.8
3.8
151 - 250
2
3.56
0.1
72.42
1.7
374.9
46. 3
2.28
.93
17.8
1.8
251 - 350
2
4.34
0.4
76.62
0.7
565.6
12.1
2.75
1.00
12.7
0.2
MORE THAN 350
7
3.66
1.3
78.63
27.9
686.0
52.7
2.68
1.04
10.9
1.1
*1NERTIA WEIGHT











1800 - 2799
3
3.86
1.0
66.56
4.3
295.8
68.7
1.20
.71
21.9
3.8
2800 - 3799
5
3.84
0.5
79.21
10.7
445.5
112.8
2.16
1.07
15.7
2.9
3800 - 4799
7
3.66
1.3
78.63
27.9
686.0
52.7
2.68
1.04
10.9
1.1
4800 - 5799
0










ALL VEHICLES
15
3.76
1.0
76.41
19.9
527.8
178.8
2.21
1.09
14.7
4.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-46

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
2
3.52
0.6
40.21
3.3
606.7
26.8
3.35
.16
13.0
0.6
CHRYSLER
9
3.04
0.9
44.11
13.9
602.9
139.8
3.05
.91
13.5
2.8
FORD MOTOR CO.
1
.2.06
0.0
78.00
0.0
395.5
0.0
0.57
0.00
16.9
0.0
GENERAL MOTORS
0










IMPORTS
3
4.21
1.4
65. 17
5.1
303.0
82.0
1.20
.70
22.0
5.5
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
3.19
1.0
44.03
15.2
608.2
132.6
3.19
.86
13.3
2.4
1974
5
3.43
1.1
62.11
10.3
372.4
121.8
1.30
.70
19.5
5.4
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
3.37
1.1
53.53
16.0
481.0
149.5
2.33
1.23
16.4
4.6
TRUCK
3
2.88
0.4
36.19
5.4
724.1
86.7
3.47.
.61
11.3
1.2
* VEHICLE OWNER











GSA
8
3.05
0.6
40.79
13. 2
600. 6
145.5
3.12
.63
13.7
2.9
PRIVATE -OWNER
7
3.53
1.4
60.66
12.2
448.5
167.5
1.91
1.43
17.3
5.6
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
6
2.93
0.8
50.30
17.3
587.6
162.2
2.90
1.20
13.6
2.8
NO CNV/NO APMP
9
3.49
1.1
49.90
16. 1
491.0
172.4
2.33
1.23
16.5
5.4
*DISPLACEMENT











LESS THAN 151
4
3.67
1.5
68.38
7.7
326.1
81.3
1.04
.65
20.7
5.1
151 - 250
2
3.31
0.1
57.86
11.3
394.5
28.8
2.33
.57
18.0
1.7
251 - 350
2
4.12
0.7
55.33
3.8
577 .6
41.2
2.89
1.93
13.1
0.6
MORE THAN 350
7
2.79
0.7
35.86
7.4
670.8
75.5
3.39
.37
12.2
1.2
*INERTIA WEIGHT











1800 - 2799
3
4.21
1.4
65.17
5.1
303.0
82.0
1.20
.70
22.0
5.5
2800 - 3799
5
3.38
0.9
60.88
11.3
468.0
103.2
2.20
1.39
15.8
2.7
3800 - 4799
7
2.79
0.7
35.86
7.4
670.8
75.5
3.39
.37
12.2
1.2
4800 - 5799
0









ALL VEHICLES
15
3.27
1.0
50.06
16.0
529.6
169.6
2.56
1.21
15.3
4.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-47

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
3.52
0.6
40.21
3.3
606.7
26.8
3.35
.16
13.0
0.6
CHRYSLER
9
3.04
0.9
44.11
13.9
602.9
139.8
3.05
.91
13.5
2.8
FORD MOTOR CO.
1
2.06
0.0
78.00
0.0
395.5
0.0
0.57
0.00
16.9
0.0
GENERAL MOTORS
0










IMPORTS
3
4.21
1.4
65.17
5.1
303.0
82.0
1.20
.70
22.0
5.5
~MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
3.19
1.0
44.03
15.2
608.2
132.6
3.19
.86
13.3
2.4
1974
5
3.43
1.1
62.11
10.3
372.4
121.8
1.30
.70
19.5
5.4
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
3.37
1.1
53.53
16.0
481.0
149.5
2.33
1.23
16.4
4.6
TRUCK
3
2.88
0.4
36.19
5.4
724.1
86.7
3.47
.61
11.3
1.2
*VEHICLE OWNER











GSA
8
3.05
0.6
40.79
13. 2
600.6
145.5
3.12
.63
13.7
2.9
PRIVATE OWNER
7
3.53
1.4
60.66
12.2
448.5
167.5
1.91
1.43
17.3
5.6
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A. PMP/NO CNV
6
2.93
0.8
50.30
17.3
587.6
162.2
2.90
1.20
13.6
2.8
NO CNV/NO APMP
9
3.49
1.1
49.90
16.1
491.0
172.4
2.33
1.23
16.5
5.4
~DISPLACEMENT











LESS THAN 151
4
3.67
1.5
68.38
7.7
326.1
81.3
1.04
.65
20.7
5.1
151 - 250
2
3.31
0.1
57.86
11.3
394.5
28.8
2.33
.57
18.0
1.7
251 - 350
2
4.12
0.7
55.33
3.8
577.6
41.2
2.89
1.93
13.1
0.6
MORE THAN 350
7
2.79
0.7
35.86
7.4
670.8
75.5
3.39
.37
12.2
1.2
~INERTIA WEIGHT











1800 - 2799
3
4.21
1.4
65.17
5.1
303.0
82.0
1.20
.70
22.0
5.5
2800 - 3799
5
3.38
0.9
60.88
11.3
468.0
103.2
2.20
1.39
15.8
2.7
3800 - 4799
7
2.79
0.7
35.86
7.4
670.8
75.5
3.39
.37
12.2
1.2
4800 - 5799
0










ALL VEHICLES
15
3.27
1.0
50.06
16.0
529.6
169.6
2.56
1.21
15.3
4.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-48

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
0.78
0.3
51.23
31. 1
40.9
54.0 -1.14
1.52 -1.9
1.3
CHRYSLER
9
0.61
0.9
29.85
20.2
-4.3
39.4 -0.34
.63 -0.7
0.8
FORD MOTOR CO.
1
1.34
0.0
19.95
0.0
-49.1
0.0 0.17
0.00 0.4
0.0
GENERAL MOTORS
0








IMPORTS
3
-0.35
0.4
1.39
9.3
-7.2
13.3 -0.00
.07 -0.1
1.7
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
10
0.61
0.9
32.31
26.6
5.1
44.4 -0.55
.80 -0.8
1.2
1974
5
0.25
0.7
14.42
7.9
-15.6
25.2 0.06
.31 -0.4
1.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
12
0.27
0.5
19.77
19.8
-2.6
36.0 -0.20
.72 -0.5
1.1
TRUCK
3
1.36
1.4
52.68
19.5
1.3
61.0 -0.92
.46 -1.2
1.2
*VEHICLE OWNER









GSA
8
0.82
0.9
39.00
24. 3
11.7
47.7 -0.59
.87 -1.1
1.0
PRIVATE OWNER
7
0.12
0.6
11.89
11.5
-17.3
21.0 -0.06
.41 -0.1
1.0
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
6
0.59
0.5
31.61
23.6
-11.2
51.1 -0.49
.91 -0.6
1.2
NO CNV/NO APMP
9
0. 43
1.0
22.84
24.0
4.4
31.2 -0.25
.62 -0.7
1.2
^DISPLACEMENT









LESS THAN 151
4
0.07
0.9
6.03
12.0
-17.7
23.6 0.04
.10 0.0
1.4
151 - 250
2
0.25
0.0
14.56
9.5
-19.6
17.5 -0.05
.37 -0.1
0.1
251 - 350
2
0. 22
0.3
21.29
4.5
-12.0
29.1 -0.14
.93 -0.4
0.4
MORE THAN 350
7
0.88
0.9
42.77
23.3
15.2
50.1 -0.71
.87 -1.3
1.1
*INERTIA WEIGHT









1800 - 2799
3
-0.35
0.4
1.39
9.3
-7.2
13.3 -0.00
.07 -0.1
1.7
2800 - 3799
5
0.46
0.5
18.33
6.3
-22.5
22.9 -0.04
.51 -0.1
0.4
3800 - 4799
7
0.88
0.9
42.77
23.3
15.2
50.1 -0.71
.87 -1.3
1.1
4800 - 5799
0








ALL VEHICLES
15
0.49
0.8
26.35
23.4
-1.8
39.4 -0.35
.73 -0.7
1.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-49

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
17.8
3.0
53.4
13.9
5.8
,7.6
-108.2
150.5
-17.8
14.1
CHRYSLER
9
14.6
16.1
39.0
18.0
-1.2
6.3
-17.7
38.3
-6.3
8.4
FORD MOTOR CO.
1
39.4
0.0
20.4
0.0
-14.2
0.0
23.0
0.0
2.5
0.0
GENERAL MOTORS
0










IMPORTS
3
-7.5
8.5
1.5
14.1
-1.7
4.7
-1.7
8.4
0.4
7.2
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
14.5
17.2
39.0
25.1
0.4
6.5
-37.6
71.1
-8.0
11.2
1974
5
7.8
18.9
18.5
9.9
-4.5
7.4
3.5
19.9
-1.8
4.7
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
8.2
14.2
25.6
21.0
-1.7
7.0
-17.3
63.9
-4.4
9.1
TRUCK
3
28.6
22.6
58.4
5.7
0.4
8.3
-50.0
51.1
-12.0
12.2
*VEHICLE OWNER











GSA
8
19.1
15.1
46.7
18.4
1.1
7.5
-46.0
77.8
-10.7
10.7
PRIVATE OWNER
7
4.5
17.6
15.6
15.9
-3.9
5.7
1.4
18.1
-0.4
4.9
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
6
15.6
13.1
36.7
20.2
-2.8
8.7
-36.3
88.6
-5.7
11.4
NO CNV/NO APMP
9
10.0
20.2
29.2
25.6
-0.2
6.0
-15.6
38.6
-6.0
9.3
~DISPLACEMENT











LESS THAN 151
4
4.2
24.5
6.2
14.9
-4.8
7.3
4.5
14.1
0.9
6.0
151 - 250
2
7.0
1.0
20.3
13.6
-5.6
5.4
-6.0
18.6
-0.8
0.4
251 - 350
2
5.4
7.1
27.8
5.6
-2.1
5.1
1.3
34.2
-3.4
3.3
MORE THAN 350
7
20.3
16.0
51.7
12.3
2.2
7.0
-52.4
81.4
-12.0
10.9
~INERTIA WEIGHT











1800 - 2799
3
-7.5
8.5
1.5
14.1
-1.7
4.7
-1.7
8.4
0.4
7.2
2800 - 3799
5
12.9
15.3
23.3
8.4
-5.9
6.2
2.7
22.8
-1.2
2.9
3800 - 4799
7
20.3
16.0
51.7
12.3
2.2
7.0
-52.4
81.4
-12.0
10.9
4800 - 5799
0










ALL VEHICLES
15
12.3
17.4
32.2
23.1
-1.3
7.0
-23.9
61.4
-5.9
9.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-50

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
#
OF
HC

CO

CO 2
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN.
S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
2
3.96
0.5
34.46
16.9
589.9
12.3
3.40
1.36
13.5
0.8
CHRYSLER
9
3.77
1.8
38.41
20.9
549.4
101.9
3.95
.94
14.6
2.6
FORD MOTOR CO.
1
2.75
0.0
67.95
0.0
363.9
0.0
1.29
0.00
18.5
0.0
GENERAL MOTORS
0










IMPORTS
3
3.86
1.2
40.36
4.2
300.3
66.6
1.95
1.06
24.3
5.3
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
3.59
1.0
34.43
13.1
561.1
102.2
3.89
1.09
14.5
2.6
1974
5
4.05
2.3
51.87
23.0
355.6
90.3
2.12
.93
21.0
6.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
3.64
1.6
42.24
19.4
460.8
136.2
2.99
1.30
17.6
5.2
TRUCK
3
4.15
0.9
32.26
12.1
619.9
37.5
4.56
.32
13.0
0.4
*VEHICLE OWNER











GSA
8
3.65
0.8
33.98
14.1
553.5
101.1
3.94
.85
14.7
2.7
PRIVATE OWNER
7
3.85
2.1
47.40
20.9
423.0
148.5
2.57
1.44
18.9
6.2
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
6
3.45
1.3
44.37
16.9
529.8
111.7
3.38
1.31
14.8
2.4
NO CNV/NO APMP
9
3.94
1.7
37.49
19.6
467.8
154.6
3.25
1.41
17.9
5.9
~DISPLACEMENT











LESS THAN 151
4
3.59
1.2
47.25
14.2
316.2
63.0
1.78
.93
22.8
5.2
151 - 250
2
3.09
0.4
44.18
18.4
395.6
30.1
3.52
.97
18.8
2.4
251 - 350
2
5.53
3.4
56.79
38.8
527.4
72.9
3.77
2.00
14.0
0.0
MORE THAN 350
7
3.51
1.2
30.38
11.4
611.2
29.4
3.97
.83
13.3
0.6
*INERTIA WEIGHT











1800 - 2799
3
3.86
1.2
40.36
4.2
300.3
66.6
1.95
1.06
24.3
5.3
2800 - 3799
5
4.00
2.2
53.98
23.7
442.0
88.4
3.18
1.54
16.8
2.9
3800 - 4799
7
3.51
1.2
30.38
11.4
611.2
29.4
3.97
.83
13.3
0.6
4800 - 5799
0










ALL VEHICLES
15
3.74
1.5
40.24
18.3
492.6
138.2
3.30
1.32
16.7
5.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-51

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
2
0.34
0.4
56.99
17.6
57.7
68.5 -1.18
.33 -2.4
1.1
CHRYSLER
9
-0.12
1.5
35.55
24.8
49.3
65.0 -1.24
.85 -1.8
1.0
FORD MOTOR CO.
1
0.65
0.0
30.00
0.0
-17.5
0.0 -0.55
0.00 -1.1
0.0
GENERAL MOTORS
0








IMPORTS
3
0.00
0.3
26.21
7.9
-4.6
16.1 -0.75
.40 -2.4
1.5
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
10
0. 21
0.9
41.92
21.5
52. 2
59.9 -1.25
.78 -2.0
0.9
1974
5
-0.37
1.7
24.67
18.8
1.2
45.7 -0.77
.42 -1.8
1.3
1975
0








*VEHICLE TYPE









AUTOMOBILE
12
0.00
1.1
31.06
19.0
17.6
45.5 -0.86
.50 -1.7
1.0
TRUCK
3
0.09
1.7
56.61
22.7
105.5
63.2 -2.00
.77 -2.9
0.6
*VEHICLE OWNER









GSA
8
0.22
1.0
45.81
21.4
58.8
68.2 -1.41
.70 -2.2
1.0
PRIVATE OWNER
7
-0.21
1.4
25. 15
17.2
8.2
34.6 -0.72
.55 -1.7
1.1
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
6
0.06
0.8
37.55
18.2
46.5
78.4 -0.96
.50 -1.8
1.2
NO CNV/NO APMP
9
-0.01
1.4
35.25
24.7
27.6
46.5 -1.17
.84 -2.1
0.9
~DISPLACEMENT









LESS THAN 151
4
0.16
0.4
27.15
6.7
-7.8
14.6 -0.70
.34 -2.1
1.4
151 - 250
2
0.47
0.3
28.24
16.6
-20.6
16.3 -1.24
.04 -1.0
0.6
251 - 350
2
-1.19
3.0
19.83
39.5
38.2
60.8 -1.02
1.00 -1.3
0.2
MORE THAN 350
7
0. 15
1.0
48.26
20.8
74.8
57.8 -1.29
.89 -2.4
0.9
*INERTIA WEIGHT









1800 - 2799
3
0.00
0.3
26.21
7.9
-4.6
16.1 -0.75
.40 -2.4
1.5
2800 - 3799
5
-0.16
1.8
25.23
22.0
3.5
44.6 -1.02
.57 -1.2
0.4
3800 - 4799
7
0.15
1.0
48.26
20.8
74.8
57.8 -1.29
.89 -2.4
0.9
4800 - 5799
0








ALL VEHICLES
15
0.02
1.2
36.17
21.7
35.2
59.3 -1.09
.71 -2.0
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-52

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF
HC
CO

C02
NOX
VEH.
MEAN S.D.
MEAN
S.D.
MEAN S.D.
MEAN S
*VEHICLE MANUFACTURER



AMER. MOTORS 2
7.3 6.9
63.2
4.6
8.3 9.5
-82.4
CHRYSLER 9
-2.6 33.8
47.5
26.4
6.5 10.1
-57.6 i
FORD MOTOR CO. 1
19.1 0.0
30.6
0.0
-5.1 0.0
-74.3
GENERAL MOTORS 0





IMPORTS 3
•
00
00
39.0
9.9
1
•
00
.e-
•
so
-71.3 :
MPG
MEAN S.D.
77.1 -22.2 13.2
63.5 -16.1
0.0 -6.6
10.8
0.0
33.7 -10.3 4.8
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	10 4.1 20.6 53.6
1974	5 -5.2 38.0 33.1
1975	0
*VEHICLE TYPE
AUTOMOBILE	12 2.1 25.0 42.7
TRUCK	3 -3.4 38. 2 63.1
*VEHICLE OWNER
GSA	8 3.1 22.4 56.7
PRIVATE OWNER	7 -1.4 32.4 35.4
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
17.3
26. 1
22.1
14.6
16.2
23.3
7.4
-1.7
1.8
14.4
8.1 -63.4
9.4 -67.4
8.1 -54.7
8.0 -105.1
64.3	-18.1 10.9
33.4	-9.1 3.9
39.5 -11.7 7.6
96.1 -28.6 7.0
7.5 10.4 -76.4 67.8 -20.0 11.5
0.7 7.0 -51.5 34.8 -9.5 3.3
A.PMP/NO CNV
6
2.5
22.5
45.7
16.8
5.8
11.1
-55.4
45.7 -16.3
13.6
NO CNV/NO APMP
9
-0.1
30. 3
47.5
25.9
3.4
8.6
-71.0
61.7 -14.3
7.7
*DISPLACEMENT










LESS THAN 151
4
5.8
11.4
36.9
9.1
-2.6
4.3
-72.1
27.5 -9.4
4.4
151 - 250
2
13.5
7.8
39.3
23.9
-5.8
5.1
-59.3
22.7 -5.5
2.9
251 - 350
2
-24.2
66.1
25.7
51.3
6.9
10.9
-32.8
24.3 -10.4
1.7
MORE THAN 350
7
1.8
23.7
60.6
10.2
10.5
7.6
-71.3
77.2 -22.5
10.0
*INERTIA WEIGHT










1800 - 2799
3
1.4
8.8
39.0
9.9
-1.8
4.9
-71.3
33.7 -10.3
4.8
2800 - 3799
5
-0.5
39.8
32.1
29.1
-0.6
9.1
-51.7
24.7 -7.7
3.0
3800 - 4799
7
1.8
23.7
60.6
10.2
10.5
7.6
-71.3
77.2 -22.5
10.0
4800 - 5799
0








ALL VEHICLES
15
1.0
26.6
46.8
22.0
4.3
9.4
1
a>
fr-
OO
54.6 -15.1
10.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-53

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	2 3.96 0.5 34.46 16.9 589.9 12.3 3.40 1.36 13.5 0.8
CHRYSLER	9 3.77 1.8 38.41 20.9 549.4 101.9 3.95 .94 14.6 2.6
FORD MOTOR CO.	1 2.75 0.0 67.95 0.0 363.9 0.0 1.29 0.00 18.5 0.0
GENERAL MOTORS	0
IMPORTS	3 3.86 1.2 40.36 4.2 300.3 66.6 1.95 1.06 24.3 5.3
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	10 3.59 1.0 34.43 13.1 561.1 102.2 3.89 1.09 14.5 2.6
1974	5 4.05 2.3 51.87 23.0 355.6 90.3 2.12 .93 21.0 6.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	12 3.64 1.6 42.24 19.4 460.8 136.2 2.99 1.30 17.6 5.2
TRUCK	3 4.15 0.9 32.26 12.1 619.9 37.5 4.56 .32 13.0 0.4
*VEHICLE OWNER
GSA	8 3.65 0.8 33.98 14.1 553.5 101.1 3.94 .85 14.7 2.7
PRIVATE OWNER	7 3.85 2.1 47.40 20.9 423.0 148.5 2.57 1.44 18.9 6.2
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV
6
3.45
1.3
44.37
16.9
529.8
111.7
3.38
1.31
14.8
2.4
NO CNV/NO APMP
9
3.94
1.7
37.49
19.6
467.8
154.6
3.25
1.41
17.9
5.9
~DISPLACEMENT











LESS THAN 151
4
3.59
1.2
47.25
14.2
316.2
63.0
1.78
.93
22.8
5.2
151 - 250
2
3.09
0.4
44.18
18.4
395.6
30.1
3.52
.97
18.8
2.4
251 - 350
2
5.53
3.4
56.79
38.8
527.4
72.9
3.77
2.00
14.0
0.0
MORE THAN 350
7
3.51
1.2
30.38
11.4
611.2
29.4
3.97
.83
13.3
0.6
~INERTIA WEIGHT











1800 - 2799
3
3.86
1.2
40.36
4.2
300.3
66.6
1.95
1.06
24.3
5.3
2800 - 3799
5
4.00
2.2
53.98
23. 7
442.0
88.4
3.18
1.54
16.8
2.9
3800 - 4799
7
3.51
1.2
30.38
11.4
611.2
29.4
3.97
.83
13.3
0.6
4800 - 5799
0










ALL VEHICLES 15 3.74 1.5 40.24 18.3 492.6 138.2 3.30 1.32 16.7 5.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-54

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
if OF HC	CO	. C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
2 -0.44
0.1
5.76
13.5
16.8
14.5 -0.04
1.20 -0.5
0.2
CHRYSLER
9 -0.73
1.2
5.70
14.6
53.5
75.3 -0.90
.47 -1.1
0.9
FORD MOTOR CO.
1 -0.69
0.0
10.05
0.0
31.6
0.0 -0.72
0.00 -1.6
0.0
GENERAL MOTORS
0







IMPORTS
3 0.35
0.2
24.81
2.6
2.7
22.0 -0.75
.38 -2.3
0.6
*MODEL YEAR








1968
0







1969
0







1970
0







1971
0







1972
0







1973
10 -0.40
0.7
9.bl
10.3
47.1
70.9 -0.70
.70 -1.2
1.1
1974
5 -0.62
1.6
10.24
21.3
16.9
35.6 -0.83
.26 -1.4
0.6
1975
0







*VEHICLE TYPE








AUTOMOBILE
12 -0.27
1.1
11.29
15.0
20.2
24.2 -0.66
.60 -1.2
0.8
TRUCK
3 -1.28
0.5
3.93
8.8
104.3
122.5 -1.09
.35 -1.7
1.6
* VEHICLE OWNER








GSA
8 -0.61
0.7
6.81
8.6
47.1
81.7 -0.82
.71 -1.1
1.0
PRIVATE OWNER
7 -0.32
1.4
13.26
18.6
25.5
28.8 -0.66
.42 -1.6
0.8
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0







CNV/NO A.PMP
0







A.PMP/NO CNV
6 -0.52
0.7
5.94
8.7
57.7
92.9 -0.48
.81 -1.2
1.2
NO CNV/NO APMP
9 -0.44
1.2
12.41
16.7
23.2
27.3 -0.92
.29 -1.4
0.8
~DISPLACEMENT








LESS THAN 151
4 0.09
0.5
21.12
7.7
9.9
23.1 -0.74
.31 -2.1
0.6
151 - 250
2 0.22
0.2
13.68
7.1
-1.0
1.3 -1.19
.40 -0.9
0.7
251 - 350
2 -1.41
2.7
-1.46
35.0
50.2
31.7 -0.89
.07 -0.9
0.6
MORE THAN 350
7 -0.73
0.6
5.48
8.0
59.6
82.7 -0.58
.77 -1.1
1.1
*INERTIA WEIGHT
1800 - 2799
3
0.
,35
0.2
24.81
2.6
2.7
22.0
-0.75
.38
-2.3
0.
6
2800 - 3799
5
-0.
61
1.6
6.90
19.5
26.0
30.3
-0.98
.29
-1.0
0.
6
3800 - 4799
7
-0.
,73
0.6
5.48
8.0
59.6
82.7
-0.58
.77
-1.1
1.
1
4800 - 5799
0












ALL VEHICLES
15
-0.
,47
1.0
9.82
14.0
37.0
61.8
-0.74
.58
-1.3
0.
9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-55

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
-12.7
4.3
15.8
34.9
2.7
2.3
-0.5
35.6
-3.8
1.2
CHRYSLER
9
-21.3
32.1
14.7
28. 7
7.5
9.3
-33.3
20.1
-9.4
9.9
FORD MOTOR CO.
1
-33.5
0.0
12.9
0.0
8.0
0.0
-126.3
0.0
-9.4
0.0
GENERAL MOTORS
0










IMPORTS
3
8.3
2.4
00
•
3.4
-0.2
7.1
-67.4
19.1
-11.0
4.9
~MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
10
-14.7
24.2
20.8
20.6
6.8
8.5
-25.1
25.1
-9.8
9.7
1974
5
-15.6
36.5
16.6
36.4
2.6
7.9
-75.8
32.3
-7.2
2.4
1975
0










*VEHICLE TYPE











AUTOMOBILE
12
-7.9
25.9
21.2
26. 2
3.4
5.2
-44.2
40.0
-7.2
4.0
TRUCK.
3
-43.5
10.0
12.3
26.6
13.3
14.4
-33.2
16.5
-15.9
16.5
*VEHICLE OWNER











GSA
8
-21.3
22.5
17.1
21. 2
6.2
9.9
-28.5
25.3
-8.8
10.7
PRIVATE OWNER
7
-7.8
32.6
22.0
31.4
4.4
6.6
-57.4
42.4
-9.2
4.0
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NOCNV
6
-16.7
24.3
11.6
21. 3
8.1
11.1
-32.7
53.1
-10.4
12.2
NO CNV/NO APMP
9
-13.9
30.9
24.6
28.0
3.6
5.8
-48.2
20.7
-8.0
4.0
~DISPLACEMENT











LESS THAN 151
4
-2.1
21.0
31.8
12.9
1.8
7.1
-82.1
33.3
-10.6
4.1
151 - 250
2
7.0
7.3
25.3
17. 2
-0.2
0.3
-50.7
5.0
-4.7
3.3
251 - 350
2
-29.1
60.3
-0.5
63. 2
8.9
6.1
-38.7
23.4
-6.9
5.0
MORE THAN 350
7
-24.6
22.1
16.3
21. 7
8.0
9.8
-17.5
24.7
-9.9
11.2
~INERTIA WEIGHT











1800 - 2799
3
8.3
2.4
38.1
3.4
-0.2
7.1
-67.4
19.1
-11.0
4.9
2800 - 3799
5
-15.5
36.7
12.5
35.2
5.1
5.7
-61.0
38.9
-6.5
3.6
3800 - 4799
7
-24.6
22.1
16.3
21.7
8.0
9.8
-17.5
24.7
-9.9
11.2
4800 - 5799
0










ALL VEHICLES
15
-15.0
27.5
19.4
25. 6
5.4
8.2
-42.0
36.3
-9.0
8.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-56

-------
1973-1974 VEHICLES
DATA SET 5
10 VEHICLES
E-57

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
3.69
0.0
115.81
0.0
704.8
0.0
1.03
0.00
9.9
0.0
CHRYSLER
8
3.57
1.3
74.99
19. 7
626.4
111.6
2.68
.73
12.0
2.2
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
4.72
0.0
62.29
0.0
349. i
0.0
1.21
0.00
19.2
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
9
3.59
1.2
77.99
23.6
612.0
143.0
2.41
.97
12.5
3.3
1974
1
4.65
0.0
76.14
0.0
557.1
0.0
2.04
0.00
12.8
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
7
3.47
1.2
73.06
21.5
555.5
131.8
2.29
.94
13.6
3.2
TRUCK
3
4.24
1.1
88.87
24. 1
725.4
26.0
2.55
1.06
10.1
0.5
*VEHICLE OWNER











GSA
6
3.62
1.2
84.26
26.6
655.2
126.5
2.31
.95
11.5
2.7
PRIVATE OWNER
4
3.81
1.4
68.11
10. 1
533.4
129.9
2.46
1.03
14.1
3.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.20
0.9
81.62
24.8
630.3
154.1
2.58
1.04
12.1
3.2
NO CNV/NO APMP
6
4.03
1.3
75.26
22.5
590.6
135.0
2.23
.91
12.9
3.3
*DISPLACEMENT











LESS THAN 151
1
4.72
0.0
62.29
0.0
349.1
0-0
1.21
0.00
19.2
0.0
151 - 250
1
3.64
0.0
73.65
0.0
407.7
0.0
2.94
0.00
16.6
0.0
251 - 350
2
4.34
0.4
76.62
0.7
565.6
12.1
2.75
1.00
12.7
0.2
MORE THAN 350
6
3.32
1.4
81.47
28.7
696.1
41.8
2.34
.97
10.7
1.1
*INERTIA WEIGHT











1800 - 2799
1
4.72
0.0
62.29
0.0
349.1
0.0
1.21
0.00
19.2
0.0
2800 - 3799
3
4.11
0.5
75.63
1.8
513.0
91.6
2.81
.72
14.0
2.3
3800 - 4799
6
3.32
1.4
81.47
28.7
696.1
41.8
2.34
.97
10.7
1.1
4800 - 5799
0










ALL VEHICLES
10
3.70
1.2
77.80
22.3
606. 5
135.9
2.37
.92
12.5
3.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-58

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(MANU. TUNE-UP)
#	OF HC CO C02 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.11 0.0 42.58 0.0 625.7 0.0 3.24 0.00 12.6 0.0
CHRYSLER	8 2.95 1.0 44.71 12.7 639.9 120.3 3.15 .87 12.6 2.0
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 5.38 0.0 70.84 0.0 365.1 0.0 1.13 0.00 18.0 0.0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	9 3.05 1.1 45.90 14.3 618.0 143.3 3.11 .92 13.1 2.6
1974	1 4.63 0.0 58.00 0.0 548.5 0.0 1.52 0.00 13.6 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	7 3.35 1.4 51.79 14.1 562.5 128.3 2.73 1.09 13.9 2.5
TRUCK	3 2.88 0.4 36.19 5.4 724.1 86.7 3.47 .61 11.3 1.2
*VEHICLE OWNER
GSA	6 2.78 0.7 41.53 12.8 651.6 133.8 3.20 .52 12.5 2.3
PRIVATE OWNER	4 3.84 1.6 55.48 12.6 550.1 134.5 2.59 1.50 14.0 2.7
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 2.90 0.8 46.49 13.1 635.5 168.7 3.34 .49 12.8 2.9
NO CNV/NO APMP	6 3.41 1.4 47.52 15.8 594.7 125.9 2.70 1.21 13.3 2.4
*DISPLACEMENT
LESS THAN
151
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
151 - 250

1
3.41
0.0
65.83
0.0
414.9
0.0
2.73
0.00
16.8
0.0
251 - 350

2
4.12
0.7
55.33
3.8
577.6
41.2
2.89
1.93
13.1
0.6
MORE THAN
350
6
2.51
0.7
37.30
5.0
695.8
67.2
3.32
.47
11.7
0.9
*INERTIA WEIGHT
1800 - 2799
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
2800 - 3799
3
3.88
0.7
58.83
6.6
523.4
98.4
2.83
1.37
14.3
2.2
3800 - 4799
6
2.51
0.7
37.30
5.0
695.8
67.2
3.32
.47
11.7
0.9
4800 - 5799
0










ALL VEHICLES
10
3.21
1.2
47.11
14.0
611.0
136.9
2.95
1.00
13.1
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-59

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
3.11
0.0
42.58
0.0
625.7
0.0
3.24
0.00
12.6
0.0
CHRYSLER
8
2.95
1.0
44.71
12.7
639.9
120.3
3.15
.87
12.6
2.0
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS '
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
9
3.05
1.1
45.90
14.3
618.0
143.3
3.11
.92
13.1
2.6
1974
1
4.63
0.0
58.00
0.0
548.5
0.0
1.52
0.00
13.6
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
7
3.35
1.4
51.79
14.1
562.5
128.3
2.73
1.09
13.9
2.5
TRUCK
3
2.88
0.4
36.19
5.4
724.1
86.7
3.47
.61
11.3
1.2
* VEHICLE OWNER











GSA
6
2.78
0.7
41.53
12.8
651.6
133.8
3.20
.52
12.5
2.3
PRIVATE OWNER
4
3.84
1.6
55.48
12.6
550.1
134.5
2.59
1.50
14.0
2.7
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
2.90
0.8
46.49
13.1
635.5
168.7
3.34
.49
12.8
2.9
NO CNV/NO APMP
6
3.41
1.4
47.52
15.8
594.7
125.9
2.70
1.21
13.3
2.4
~DISPLACEMENT











LESS THAN 151
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
151 - 250
1
3.41
0.0
65.83
0.0
414.9
0.0
2.73
0.00
16.8
0.0
251 - 350
2
4.12
0.7
55.33
3.8
577.6
41.2
2.89
1.93
13.1
0.6
MORE THAN 350
6
2.51
0.7
37.30
5.0
695.8
67.2
3.32
.47
11.7
0.9
~INERTIA WEIGHT











1800 - 2799
1
5.38
0.0
70.84
0.0
365.1
0.0
1.13
0.00
18.0
0.0
2800 - 3799
3
3.88
0.7
58.83
6.6
523.4
98.4
2.83
1.37
14.3
2.2
3800 - 4799
6
2.51
0.7
37.30
. 5.0
695.8
67.2
3.32
.47
11.7
0.9
4800 - 5799
0









ALL VEHICLES
10
3.21
1.2
47. 11
14.0
611.0
136.9
2.95
1.00
13.1
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-60

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
it OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
0.58
0.0
73.23
0.0
79.1
0.0 -2.21
0.00 -2.7
0.0
CHRYSLER
8
0.62
1.0
30.28
21.7
-13.5
39.4 -0.46
.61 -0.5
0.9
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
-0.66
0.0
-8.55
0.0
-16.0
0.0 0.08
CM
•
o
o
o
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
9
0.54
1.0
32.08
28.5
-6.0
48.0 -0.71
.75 -0.6
1.3
1974
1
0.02
0.0
18.14
0.0
8.6
0.0 0.52
0.00 -0.7
0.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
7
0.12
0.4
21.26
25.3
-7.0
42.9 -0.44
.90 -0.3
1.2
TRUCK
3
1.36
1.4
52.68
19.5
1.3
61.0 -0.92
.46 -1.2
1.2
~VEHICLE OWNER









GSA
6
0.84
1.0
42.73
27.8
3.5
57.7 -0.88
.84 -1.0
1.3
PRIVATE OWNER
4
-0.04
0.5
12.63
14.5
-16.6
18.1 -0.13
.56 0.1
0.8
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
0.30
0.2
35.12
29.5
-5.2
61.4 -0.76
1.04 -0.7
1.3
NO CNV/NO APMP
6
0.62
1.2
27.73
28.0
-4.1
38.3 -0.47
.69 -0.5
1.3
*DISPLACEMENT









LESS THAN 151
1
-0.66
0.0
-8.55
0.0
-16.0
0.0 0.08
0.00 1.2
0.0
151 - 250
1
0.23
0.0
7.82
0.0
-7.2
0.0 0.21
0.00 -0.2
0.0
251 - 350
2
0. 22
0.3
21.29
4.5
-12.0
29.1 -0.14
.93 -0.4
0.4
MORE THAN 350
6
0.82
1.1
44.17
25.7
0.3
59.0 -0.98
.71 -1.0
1.3
*INERTIA WEIGHT









1800 - 2799
1
-0.66
0.0
-8.55
0.0
-16.0
0.0 0.08
0.00 1.2
0.0
2800 - 3799
3
0.22
0.2
16.80
8.4
-10.4
20.8 -0.02
.68 -0.3
0.3
3800 - 4799
6
0.82
1.1
44.17
25.7
0.3
59.0 -0.98
.71 -1.0
1.3
4800 - 5799
0






ALL VEHICLES
10
0.49
0.9
30.69
27.2
-4.5
45.5 -0.58
.80 -0.6
1.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-61

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE


(1973-1974
VEHICLES-HOT START
DATA)
1






(BASELINE—i
MANU.
TUNE-UP)



#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S
*VEHICLE MANUFACTURER








AMER. MOTORS
1
15.7
0.0
63.2
0.0
11.2
0.0 -
¦214.6
0.0
-27.8
CHRYSLER
8
14.5
17.1
38.1
18.5
-2.2
5.7
-22.0
39.3
-5.0
FORD MOTOR CO.
0









GENERAL MOTORS
0









IMPORTS
1
-14.0
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
~MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
9
13. 1
18.2
36.8
26.2
-1.4
7.0
-45,5
72.0
-6.2
1974
1
0.4
0.0
23.8
0.0
1.5
0.0
25.5
0.0
-5.7
1975
0









*VEHICLE TYPE










AUTOMOBILE
7
4.6
9.5
25.6
23.5
-1.7
6.5
-33.4
81.9
-3.7
TRUCK
3
28.6
22.6
58.4
5.7
0.4
8.3
-50.0
51.1
-12.0
* VEHICLE OWNER










GSA
6
19.6
17.7
47.3
20.9
0.3
8.2
-63.7
83.8
-10.2
PRIVATE OWNER
4
0.2
10.3
17.7
21.2
-3.2
3.2
-0.4
21.1
-0.1
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
8.6
5.1
39.1
23.9
-0.8
8.6
-59.8
103.8
-7.3
NO CNV/NO APMP
6
14.0
23.0
33.0
27.7
-1.2
6.0
-24.0
46.1
-5.4
~DISPLACEMENT










LESS THAN 151
1
-14.0
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
151 - 250
1
6.3
0.0
10.6
0.0
-1.8
0.0
7.1
0.0
-1.1
251 - 350
2
5.4
7.1
27.8
5.6
-2.1
5.1
1.3
34.2
-3.4
MORE THAN 350
6
19.1
18.1
50.4
15.0
-0.0
8.4
-66.7
81.0
-10.0
~INERTIA WEIGHT










1800 - 2799
1
-14.0
0.0
-13.7
0.0
-4.6
0.0
6.6
0.0
6.4
2800 - 3799
3
5.7
5.0
22.0
10.7
-2.0
3.6
3.3
24.4
-2.6
3800 - 4799
6
19.1
18.1
50.4
15.0
-0.0
8.4
-66.7
81.0
-10.0
4800 - 5799
0









ALL VEHICLES
10
11.8
17.6
35.5
25.0
-1.1
6.7
-38.4
71.5
-6.2
0.0
11.3
5.0
13.7
0.0
0.0
3.3
L3.5
0.0
2.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-62

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)

OF
HC

CO

CO 2
NOX
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
s.:
*VEHICLE MANUFACTURER







AMER. MOTORS
1
4.91
0.0
33.34
0.0
598.5
0.0
3.51
0.
CHRYSLER
8
3.19
1.0
37.49
10.4
583.2
89.7
3.87
1.
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
9
3.36
i.l
36.15
8.9
566.9
116.4
3.74
1.
1974
1
4.36
0.0
49.50
0.0
497.7
0.0
2.64
0.
1975
0








*VEHICLE TYPE









AUTOMOBILE
7
3.31
1.2
40.40
9.7
522.6
110.5
3.59
1.
TRUCK
3
3.80
0.9
30. 70
3.4
647.2
57.9
3.73
1.
*VEHICLE OWNER









GSA
6
3.45
1.2
36.21
10.0
591.4
96.6
3.74

PRIVATE OWNER
4
3.48
1.0
39.40
9.4
512.7
130.5
3.47
i!
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
3.35
1.5
39.60
11.4
578. 1
111.3
4.06
m
NO CNV/NO APMP
6
3.54
0.9
36.08
8.6
547.8
121.0
3.34
i.
^DISPLACEMENT









LESS THAN 151
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.
151 - 250
1
2.09
0.0
55.62
0.0
416.6
0.0
3.64
0.
251 - 350
2
3.80
0.8
38.17
16.0
542.6
63.6
4.10
2.
MORE THAN 350
6
3.45
1.2
33.55
4.3
627.0
44.7
3.78
•
*INERTIA WEIGHT









1800 - 2799
1
4.19
0.0
41.63
0.0
335.4
0.0
1.80
0.
2800 - 3799
3
3.23
1.1
43.99
15.2
500.6
85.5
3.94
1.
3800 - 4799
6
3.45
1.2
33.55
4.3
627.0
44.7
3.78
•
4800 - 5799
0








ALL VEHICLES
10
3.46
1.1
37.49
9.4
560.0
111.9
3.63
1.
MPG
0.0
1.8
0.0
3.1
0.0
3.1
0.9
2.0
3.9
2.4
3.3
0.0
0.0
0.8
0.7
0.0
1.8
0.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-63

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
4
OF
HC

CO

C02 NOX
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
*VEHICLE MANUFACTURER






AMER. MOTORS
1
-1.22
0.0
82.47
0.0
106.3
0.0 -2.48
0.00
CHRYSLER
8
0.38
1.2
37.50
25.1
43.2
49.3 -1.19
.75
FORD MOTOR CO.
0







GENERAL MOTORS
0







IMPORTS
1
0.53
0.0
20.66
0.0
13.7
0.0 -0.59
0.00
~MODEL YEAR








1968
0







1969
0







1970
0







1971
0







1972
0







1973
9
0.23
1.3
41.83
28.3
45.1
51.9 -1.33
.82
1974
1
0.29
0.0
26.64
0.0
59.4
0.0 -0.60
0.00
1975
0







*VEHICLE TYPE








AUTOMOBILE
7
0.15
0.9
32.66
25.2
33.0
42.3 -1.30
.81
TRUCK
3
0.44
1.9
58.17
27.1
78.2
57.9 -1.17
.97
* VEHICLE OWNER








GSA
6
0.18
1.6
48.05
31.8
63.7
54.0 -1.42
.88
PRIVATE OWNER
4
0.33
0.5
28.71
14.9
20.7
30.1 -1.01
.72
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)




CNV/A.PMP
0







CNV/NO A.PMP
0







A.PMP/NO CNV
4
-0.15
1.2
42.01
31.0
52. 2
54.2 -1.48
.89
NO CNV/NO APMP
6
0.49
1.2
39.18
27.3
42.8
50.5 -1.11
.80
~DISPLACEMENT








LESS THAN 151
1
0.53
0.0
20.66
0.0
13.7
0.0 -0.59
0.00
151 - 250
1
1.55
0.0
18.03
0.0
-8.9
0.0 -0.70
0.00
251 - 350
2
0.53
0.3
38.45
16.7
23.0
51.5 -1.35
1.05
MORE THAN 350
6
-0.13
1.4
47.92
32.0
69.1
46.4 -1.43
.87
~INERTIA WEIGHT








1800 - 2799
1
0.53
0.0
20.66
o.o
13.7
0.0 -0.59
0.00
2800 - 3799
3
0.87
0.6
31.64
16.7
12.4
40.8 -1.13
.83
3800 - 4799
6
-0.13
1.4
47.92
32.0
69.1
46.4 -1.43
.87
4800 - 5799
0







ALL VEHICLES
10
0.24
1.2
40.31
27.1
46.5
49.2 -1.26
.81
MPG
0.9
0.0
1.0
0.5
1.0
0.7
1.3
0.6
0.0
0.0
0.6
1.0
0.0
0.7
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-64

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
//
OF
HC

CO

C02
NOX MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
-33. 1
0.0
71.2
0.0
15. 1
0.0
-240.8
0.0 -34.8
CHRYSLER
8
3.7
30.8
46.5
19.9
6.2
7.2
-49.2
35.4 -15.4
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
11.2
0.0
33.2
0.0
3.9
0.0
-48.8
0.0 -11.6
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
9
0.2
31.5
49.0
20.5
6.5
7.3
-72.6
70.8 -16.9
1974
1
6.2
0.0
35.0
0.0
10.7
0.0
-29.4
0.0 -17.4
1975
0








*VEHICLE TYPE









AUTOMOBILE
7
-0.5
28.5
40.9
19.1
5.2
6.5
-72.8
77.1 -13.8
TRUCK.
3
3.8
39.1
63.3
12.5
10.7
8.1
-57.8
53.5 -24.3
*VEHICLE OWNER









GSA
6
-2.2
37.8
52.1
22.2
8.8
7.8
-86.6
84.8 -20.5
PRIVATE OWNER
4
5.2
15.1
40.9
16.3
3.9
5.3
-40.8
16.7 -11.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
-5.9
33.3
47.2
23.2
7.0
7.8
-87.5
103.6 -17.3
NO CNV/NO APMP
6
5.2
29.5
47.9
19.6
6.8
7.2
-55.5'
37.8 -16.8
*DISPLACEMENT









LESS THAN 151
1
11.2
0.0
33.2
0.0
3.9
0.0
-48.8
0.0 -11.6
151 - 250
1
42.6
0.0
24.5
0.0
-2.2
0.0
-23.8
0.0 -4.8
251 - 350
2
12.8
9.3
50.1
21.4
4.2
9.2
-44.9
21.9 -14.0
MORE THAN 350
6
-11.9
30.8
53.0
20.8
9.8
6.4
-86.8
84.7 -20.9
*INERTIA WEIGHT









1800 - 2799
1
11.2
0.0
33.2
0.0
3.9
0.0
-48.8
0.0 -11.6
2800 - 3799
3
22.7
18.4
41.6
21.1
2.0
7.5
-37.9
19.7 -10.9
3800 - 4799
6
-11.9
30.8
53.0
20.8
9.8
6.4
-86.8
84.7 -20.9
4800 - 5799
0







ALL VEHICLES
10
0.8
29.7
47.6
19.9
6.9
7.0
-68.3
68.2 -17.0
0.0
3.5
4.3
7.3
0.0
0.0
4.7
0.0
6.3
0.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-65

-------
1973-1974 VEHICLES
DATA SET 6
16 VEHICLES
BASELINE
1
MANU. TUNE-DP
E-66

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
4.30
0.9
91.44
34.5
647.6
80.8
2.22
1.68
11.2
1.8
CHRYSLER
10
3.45
1.2
71.51
19.9
603.0
135.4
2.66
.79
12.7
2.9
FORD MOTOR CO.
1
3.40
0.0
97.95
0.0
346.4
0.0
0.74
0.00
17.4
0.0
GENERAL MOTORS
0










IMPORTS
3
3.86
1.0
66.56
4.3
295.8
68.7
1.20
.71
21.9
3.8
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
11
3.61
1.2
73.91
23.6
615.9
129.6
2.60
.97
12.4
3.0
1974
5
3.68
0.7
76.54
12.4
356.8
123.5
1.36
.70
19.2
4.9
1975
0










*VEHICLE TYPE











AUTOMOBILE
13
3.49
1.0
71.47
18.9
491.0
164.5
2.14
1.08
15.6
4.7
TRUCK
3
4.24
1.1
88.87
24.1
725.4
26.0
2.55
1.06
10.1
0.5
*VEHICLE OWNER











GSA
9
3.63
1.1
76.43
25.2
615.7
145.2
2.50
.96
12.5
3.3
PRIVATE OWNER
7
3.64
1.0
72.54
13.3
431.2
161.9
1.85
1.14
17.2
5.2
~CONTROL OPT IONS(CONVERTER, AIR
PUMP)







CNV/A.PMP
0

.








CNV/NO A. PMP
0










A.PMP/NO CNV
6
3.52
1.0
81.92
21.6
576.4
164.9
2.41
1.20
13.0
3.2
NO CNV/NO APMP
10
3.70
1.1
70.42
19.4
510.1
184.8
2.09
1.01
15.5
5.4
~DISPLACEMENT











LESS THAN 151
4
3.75
0.8
74.41
16.1
308.4
61.6
1.08
.62
20.8
3.8
151 - 250
2
3.56
0.1
72.42
1.7
374.9
46.3
2.28
.93
17.8
1.8
251 - 350
2
4.34
0.4
76.62
0.7
565.6
12.1
2.75
1.00
12.7
0.2
MORE THAN 350
8
3.42
1.4
74.99
27.8
680.5
51.1
2.63
.98
11.1
1.1
~INERTIA WEIGHT











1800 - 2799
3
3.86
1.0
66.56
4.3
295.8
68.7
1.20
.71
21.9
3.8
2800 - 3799
5
3.84
0.5
79.21
10.7
445.5
112.8
2.16
1.07
15.7
2.9
3800 - 4799
8
3.42
1.4
74.99
27.8
680.5
51.1
2.63
.98
11.1
1.1
4800 - 5799
0










ALL VEHICLES
16
3.63
1.1
74.73
20.3
535.0
175.1
2.21
1.06
14.5
4.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-67

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
9 OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
3.52
0.6
40.21
3.3
606.7
26.8
3.35
.16
13.0
0.6
CHRYSLER
10
2.89
0.9
42.92
13.6
612.3
135.1
3.03
.86
13.3
2.7
FORD MOTOR CO.
1
2.06
0.0
78.00
0.0
395.5
0.0
0.57
0.00
16.9
0.0
GENERAL MOTORS
0










IMPORTS
3
4.21
1.4
65.17
5. 1
303.0
82.0
1.20
.70
22.0
5.5
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	11 3.OA 1.1 42.96 14.8 616.3 128.6 3.15 .83 13.1 2.3
1974	5 3.43 1.1 62.11 10.3 372.4 121.8 1.30 .70 19.5 5.4
1975	0
*VEHICLE TYPE
AUTOMOBILE	13 3.23 1.2 51.89 16.4 497.6 155.2 2.37 1.19 16.0 4.6
TRUCK 3 2.88 0.4 36.19 5.4 724.1 86.7 3.47 .61 11.3 1.2
*VEHICLE OWNER
GSA	9 2.88 0.7 39.84 12.6 611.3 139.8 3.08 .60 13.4 2.8
PRIVATE OWNER 7 3.53 1.4 60.66 12.2 448.5 167.5 1.91 1.43 17.3 5.6
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NO CNV
6
2.93
0.8
50.30
17.3
587.6
162.2
2.90
1.20
13.6
2.8
NO CNV/NO APMP
10
3.30
1.2
48.13
16.2
511.6
175.1
2.38
1.17
16.0
5.3
~DISPLACEMENT











LESS THAN 151
4
3.67
1.5
68.38
7.7
326. 1
81.3
1.04
.65
20.7
5.1
151 - 250
2
3.31
0.1
57.86
11.3
394.5
28.8
2.33
.57
18.0
1.7
251 - 350
2
4.12
0.7
55.33
3.8
5 77.6
41.2
2.89
1.93
13.1
0.6
MORE THAN 350
8
2.63
0.8
35.41
7.0
674.0
70.5
3.32
.40
12.1
1.1
~INERTIA WEIGHT











1800 - 2799
3
4.21
1.4
65. 17
5. 1
303.0
82.0
1.20
.70
22.0
5.5
2800 - 3799
5
3.38
0.9
60.88
11.3
468.0
103.2
2.20
1.39
15.8
2.7
3800 - 4799
8
2.63
0.8
35.41
7.0
674.0
70.5
3.32
.40
12.1
1.1
4800 - 5799
0









ALL VEHICLES
16
3.16
1.1
48.95
16.1
540.1
169.1
2.57
1.17
15.1
4.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-68

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
2
0.78
0.3
51.23
31.1
40.9
54.0 -1.14
1.52 -1.9
1.3
CHRYSLER
10
0.57
0.9
28.59
19.5
-9.3
40.4 -0.36
.60 -0.6
0.9
FORD MOTOR CO.
1
1.34
0.0
19.95
0.0
-49.1
0.0 0.17
0.00 0.4
0.0
GENERAL MOTORS
0








IMPORTS
3
-0.35
0.4
1.39
9.3
-7.2
13.3 -0.00
0
1
o
•
1.7
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
11
0.57
0.9
30.95
25.6
-0.3
45.8 -0.55
.76 -0.7
1.2
1974
5
0.25
0.7
14.42
7.9
-15.6
25.2 0.06
.31 -0.4
1.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
13
0.27
0.5
19.58
19.0
-6.6
37.3 -0.23
.70 -0.4
1.1
TRUCK
3
1.36
1.4
52.68
19.5
1.3
61.0 -0.92
.46 -1.2
1.2
*VEHICLE OWNER









GSA
9
0.75
0.9
36.59
23.9
4.4
49.8 -0.59
.82 -1.0
1.1
PRIVATE OWNER
7
0.12
0.6
11.89
11.5
-17.3
21.0 -0.06
.41 -0.1
1.0
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
6
0.59
0.5
31.61
23.6
-11.2
51.1 -0.49
.91 -0.6
1.2
NO CNV/NO APMP
10
0.40
1.0
22.28
22.7
-1.5
34.8 -0.28
.59 -0.6
1.2
*DISPLACEMENT









LESS THAN 151
4
0.07
0.9
6.03
12.0
-17.7
23.6 0.04
.10 0.0
1.4
151 - 250
2
0.25
0.0
14.56
9.5
-19.6
17.5 -0.05
.37 -0.1
0.1
251 - 350
2
0.22
0.3
21.29
4.5
-12.0
29.1 -0.14
.93 -0.4
0.4
MORE THAN 350
8
0.79
0.9
39.59
23.4
6.5
52.5 -0.69
.81 -1.0
1.2
*INERTIA WEIGHT









1800 - 2799
3
-0.35
0.4
1.39
9.3
-7.2
13.3 -0.00
.07 -0.1
1.7
2800 - 3799
5
0.46
0.5
18.33
6.3
-22.5
22.9 -0.04
.51 -0.1
0.4
3800 - 4799
8
0.79
0.9
39.59
23.4
6.5
52.5 -0.69
.81 -1.0
1.2
4800 - 5799
0








ALL VEHICLES
16
0.47
0.8
25.78
22.7
-5.1
40.3 -0.36
.70 -0.6
1.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-69

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES-HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX
MEAN S.D.
MPG
MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
2
17.8
3.0
53.4
13.9
5.8
7.6
-108.2
CHRYSLER
10
14.1
15.3
38.6
17.1
-2.0
6.3
-18.4
FORD MOTOR CO.
1
39.4
0.0
20.4
0.0
-14.2
0.0
23.0
GENERAL MOTORS
0







IMPORTS
3
-7.5
8.5
1.5
14.1
-1.7
4.7
-1.7
*MODEL YEAR
1968	0
1969	0
19 70	0
1971	0
1972	0
1973	11
1974	5
1975	0
*VEHICLE TYPE
AUTOMOBILE	13
TRUCK	3
* VEHICLE OWNER
14.0
7.8
8.3
28.6
16.4
18.9
13.6
22.6
38.7
18.5
26.3
58.4
23.9
9.9
20.3
5.7
-0.4
-4.5
-2.2
0.4
6.7
7.4
7.0
8.3
-36.4
3.5
-17.9
•50.0
36.1 -5.3
0.0 2.5
8.5
0.0
8.4 0.4 7.2
67.6 -6.9 11.2
19.9 -1.8 4.7
61.2 -3.8 9.0
51.1 -12.0 12.2
GSA	9
PRIVATE OWNER 7
18.0 14.5 45.4 17.6
4.5 17.6 15.6 15.9
~CONTROL OPT IONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NO CNV 6
NO CNV/NO APMP 10
~DISPLACEMENT
15.6
10.0
13.1
19.1
36.7
29.7
20.2
24.2
0.0 7.7 -43.6 73.2 -9.1 11.1
-3.9 5.7 1.4 18.1 -0.4 4.9
-2.8 8.7 -36.3 88.6 -5.7 11.4
-1.0 6.2 -16.5 36.5 -5.1 9.3
LESS THAN 151
4
4.2
24.5
6.2
14.9
-4.8
7.3
4.5
14.1
0.9
151 - 250
2
7.0
1.0
20.3
13.6
-5.6
5.4
-6.0
18.6
-0.8
251 - 350
2
5.4
7.1
27.8
5.6
-2.1
5.1
1.3
34.2
-3.4
MORE THAN 350
8
19.0
15.3
49.6
12.9
0.9
7.5
-48.9
76.0
-10.1
~INERTIA WEIGHT










1800 - 2799
3
-7.5
8.5
1.5
14.1
-1.7
4.7
-1.7
8.4
0.4
2800 - 3799
5
12.9
15.3
23.3
8.4
-5.9
6.2
2.7
22.8
-1.2
3800 - 4799
8
19.0
15.3
49.6
12.9
0.9
7.5
-48.9
76.0
-10.1
4800 - 5799
0









ALL VEHICLES
16
12.1
16.8
32.4
22.3
-1.7
7.0
-23.9
59.3
-5.3
6.0
0.4
3.3
LI.5
7.2
2.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
E-70

-------
VEHICLE #3025
(NO DATA ANALYSIS)
E-71

-------
VEHICLE #3031
(NO DATA ANALYSIS)
E-72

-------
APPENDIX F
TABLES OF TEST RESULTS
DATA SET 1 PAGE F-2

-------
1973-1974 VEHICLES
DATA SET 1
9 VEHICLES
BASELINE
MANU. TUNE-UP
PARA. ADJ.
DEVICE

MANU. TUNE-UP
PARA. ADJ.
DEVICE
F-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	7
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
*MODEL YEAR
6.16
4.54
0.0 143.38
1.2 87.27
0.0
16.0
721.1	0.0 1.00 0.00 9.2 0.0
645.2	124.0 3.09 1.31 11.5 2.3
5.03 0.0 70.11 0.0 356.7 0.0 1.11 0.00 18.4 0.0
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
* VEHICLE OWNER
GSA
PRIVATE OWNER
0
0
0
0
0
8
1
0
6
3
4.70
5.39
4.54
5.25
1.2
0.0
1.3
0.5
91.89
89.26
89. 15
96.49
5 5.14 0.9 102.02
4 4.32 1.4 78.56
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
26.2 627.4 157.5
0.0 574.4 0.0
27.9 557.0 141.9
20.2 750.7 15.4
28.4 679.0 144.7
10.8 549.7 135.7
2.71 1.53 12.0 3.4
2.02 0.00 12.1 0.0
2.68 1.71 13.1 3.4
2.54 1.00 9.7 0.4
2.36 1.07 10.8 2.9
2.98 1.94 13.4 3.3
A.PMP/NO CNV
4
4.27
1.6
97.44
33.5
646.3
154.4
2.58
1.06
11.5
3.1
NO CNV/NO APMP
5
5.18
0.5
86.92
17.2
601.8
158.3
2.67
1.83
12.4
3.5
*DISPLAC£MENT











LESS THAN 151
1
5.03
0.0
70.11
0.0
356.7
0.0
1.11
0.00
18.4
0.0
151 - 250
1
3.82
0.0
77.24
0.0
421.9
0.0
3.15
0.00
16.0
0.0
251 - 350
2
4.95
0.6
87.89
1.9
584.0
13.6
3.81
2.52
12.0
0.1
MORE THAN 350
5
4.85
1.5
100.25
30.6
729.5
35.2
2.37
1.08
9.9
0.8
*INERTIA WEIGHT











1800 - 2799
1
5.03
0.0
70.11
0.0
356.7
0.0
1.11
0.00
18.4
0.0
2800 - 3799
3
4.58
0.8
84.34
6.3
530.0
94.1
3.59
1.82
13.3
2.3
3800 - 4 799
5
4.85
1.5
100.25
30.6
729.5
35.2
2.37
1.08
9.9
0.8
4800 - 5799
0










ALL VEHICLES
9
oo
1.1
91.60
24.5
621.5
148.4
2.63
1.45
12.0
3.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(MANU. TUNE-UP)
0	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 1 3.56 0.0 52.66 0.0 632.6 0.0 3.01 0.00 12.2 0.0
CHRYSLER	7 3.70 0.8 57.84 14.3 647.5 124.6 3.15 .89 12.1 2.1
FORD MOTOR CO. 0
GENERAL MOTORS 0
IMPORTS	1 5.79 0.0 78.43 0.0 373.8 0.0 1.05 0.00 17.2 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.79 1.0 58.84 15.2 621.5 149.4 3.07 .96 12.6 2.6
1974	1 4.90 0.0 65.23 0.0 566.4 0.0 1.54 0.00 13.0 0.0
1975	0
* VEHICLE TYPE
AUTOMOBILE
6
4.18
1.1
67.88
8.8
554.4
129.0
2.63
1.14
13.5
2.6
TRUCK
3
3.39
0.5
42.90
3. 1
737.5
66.0
3.44
.62
10.9
0.9
* VEHICLE OWNER











GSA
5
3.46
0.4
50.34
12.2
654.1
143.5
3.24
.53
12.2
2.4
PRIVATE OWNER
4
4.49
1.3
71.07
6.1
567. 1
141.2
2.48
1.44
13.2
2.8
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.45
0.5
60.39
13.8
643.3
162.3
3.24
.46
12.3
2.8
NO CNV/NO APMP
5
4.29
1.2
58.88
16.4
593.1
136.4
2.63
1.33
13.0
2.5
*DISPLACEMENT











LESS THAN 151
1
5.79
0.0
78.43
0.0
373.8
0.0
1.05
0.00
17.2
0.0
151 - 250
1
3.57
0.0
70.33
0.0
425.3
0.0
2.85
0.00
16.2
0.0
251 - 350
2
4.70
0.3
66.10
1.2
593.9
39.0
2.84
1.85
12.5
0.7
MORE THAN 350
5
3.30
0.5
51.00
13.5
710.4
65.2
3.30
.48
11.1
0.9
*INERTIA WEIGHT











1800 - 2799
1
5.79
0.0
78.43
0.0
373.8
0.0
1.05
0.00
17.2
0.0
2800 - 3799
3
4.33
0.7
67.51
2.6
537.7
101.2
2.85
1.31
13.7
2.2
3800 - 4799
5
3.30
0.5
51.00
13.5
710.4
65.2
3.30
.48
11.1
0.9
4800 - 5799
ALL VEHICLES 9 3.92 1.0 59.55 14.4 615.4 141.0 2.90 1.04 12.7 2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-4

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
5.59
0.0
40.43
0.0
619.5
0.0
3.90
0.00
12.7
0.0
CHRYSLER
7
3.70
1.0
44.37
10.3
600.7
97.5
3.97
1.06
13.2
1.9
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
20.6
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
3.90
1.1
42.98
9.0
581.4
126.9
3.84
1.19
13.9
3.2
1974
1
4.69
0.0
52.33
0.0
518.0
0.0
2.78
0.00
14.4
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
3.90
1.3
46.94
9.6
529.3
121.2
3.63
1.29
14.9
3.3
TRUCK
3
4.17
0.8
38.19
3.9
664.6
56.1
3.91
1.12
12.1
0.9
*VEHICLE OWNER











GSA
5
4.05
1.3
42.75
9.4
608.8
108.9
3.89
.79
1.3.1
2.1
PRIVATE OWNER
4
3.91
0.8
45.62
9.6
531.3
136.2
3.51
1.64
15.0
3.9
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PHP/NO CNV
4
3.90
1.6
48.48
8.7
597.1
114.0
4.13
.56
13.2
2.4
NO CNV/NO APMP
5
4.06
0.5
40.46
8.3
556.2
135.7
3.39
1.48
14.6
3.5
~DISPLACEMENT











LESS THAN 151
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
20.6
0.0
151 - 250
1
2.14
0.0
58.74
0.0
430.9
0.0
3.83
0.00
16.7
0.0
251 - 350
2
4.16
0.7
42.27
14.2
563.7
64.6
4.21
2.02
13.8
0.9
MORE THAN 350
5
4.20
1.1
41.54
6.9
653.2
44.2
3.89
.79
12.2
0.7
~INERTIA WEIGHT











1800 - 2799
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
20.6
0.0
2800 - 3799
3
3.49
1.3
47.76
13.8
519.4
89.3
4.08
1.45
14.8
1.8
3800 - 4799
5
4.20
1.1
41.54
6.9
653.2
44.2
3.89
.79
12.2
0.7
4800 - 5799
0










ALL VEHICLES
9
3.99
1.1
44.02
9.0
574.4
120.6
3.72
1.17
14.0
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-5

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
3.56
0.0
52.66
0.0
632.6
0.0
3.01
0.00
12.2
0.0
CHRYSLER
7
3.70
0.8
57.84
14.3
647.5
124.6
3.15
.89
12.1
2.1
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
5.79
0.0
78.43
0.0
373.8
0.0
1.05
0.00
17.2
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
3.79
1.0
58.84
15.2
621.5
149.4
3.07
.96
12.6
2.6
1974
1
4.90
0.0
65.23
0.0
566.4
0.0
1.54
0.00
13.0
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
4.18
1.1
67.88
8.8
554.4
129.0
2.63
1.14
13.5
2.6
TRUCK
3
3.39
0.5
42.90
3. 1
737.5
66. 0
3.44
.62
10.9
0.9
* VEHICLE OWNER











GSA
5
3.46
0.4
50.34
12.2
654.1
143.5
3.24
.53
12.2
2.4
PRIVATE OWNER
4
4.49
1.3
71.07
6. 1
567.1
141.2
2.48
1.44
13.2
2.8
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
Q










CNV/NO A.PMP
0










A.PMP/NO CNV
4
3.45
0.5
60.39
13.8
643.3
162.3
3.24
.46
12.3
2.8
NO CNV/NO APMP
5
4.29
1.2
58.88
16.4
593.1
136.4
2.63
1.33
13.0
2.5
*DISPLACEMENT











LESS THAN 151
1
5.79
0.0
78.43
0.0
373.8
0.0
1.05
0.00
17.2
0.0
151 - 250
1
3.57
0.0
70.33
0.0
425.3
0.0
2.85
0.00
16.2
0.0
251 - 350
2
4. 70
0.3
66.10
1.2
593.9
39.0
2.84
1.85
12.5
0.7
MORE THAN 350
5
3. 30
0.5
51.00
13.5
710.4
65.2
3.30
.48
11.1
0.9
*INERTIA WEIGHT











1800 - 2799
1
5.79
0.0
78.43
0.0
.373.8
0.0
1.05
0.00
17.2
0.0
2800 - 3799
3
4.33
0.7
67.51
2.6
537.7
101.2
2.85
1.31
13.7
2.2
3800 - 4799
5
3.30
0.5
51.00
13.5
710.4
65.2
3.30
.48
11.1
0.9
4800 - 5799
0










ALL VEHICLES
9
3.92
1.0
59.55
14.4
615.4
141.0
2.90
1.04
12.7
2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-6

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
*VEHICLE MANUFACTURER
CO 2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
2.60
0.84
1
7
0
0
1	-0.76
0.0
1.1
90.72
29.43
0.0
26.4
88.5 0.0 -2.01 0.00 -3.0 0.0
-2.3 35.5 -0.06 .93 -0.6 0.9
0.0 -8.32 0.0 -17.1 0.0 0.06 0.00 1.2 0.0
0
0
0
0
0
8 0.91
1	0.49
0
6
3
0.36
1.85
1.4
0.0
1.2
1.0
33.04
24.03
21.27
53.59
5 1.68 1.1 51.68
4 -0.17 0.5 7.49
36.3
0.0
36.4
17.4
32.2
16.7
5.9 46.9 -0.36 1.07 -0.7 1.4
8.0 0.0 0.48 0.00 -0.8 0.0
2.6
13.2
24.9
-17.4
44.7	0.05 1.13 -0.4 1.5
50.8	-0.90 .45 -1.3 0.9
51.0	-0.88
18.1	0.50
.88 -1.4
.66 0.2
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
1.2
0.9
A.PMP/NO CNV
4
0.82
1.3
37.06
44.5
3.0
59.2
-0.65
1.04
-0.8
1.5
NO CNV/NO APMP
5
0.89
1.5
28.03
28.3
8.6
34.6
0.04
1.03
-0.6
1.3
~DISPLACEMENT











LESS THAN 151
1
-0.76
0.0
-8.32
0.0
-17.1
0.0
0.06
0.00
1.2
0.0
151 - 250
1
0.25
0.0
6.91
0.0
-3.4
0.0
0.30
0.00
-0.2
0.0
251 - 350
2
0.25
0.3
21.79
3,2
-9.9
25.4
0.96
.68
-0.4
0.6
MORE THAN 350
5
1.55
1.3
49.24
36.6
19.1
56.5
-0.94
.79
-1.2
1.4
*INERTIA WEIGHT











1800 - 2799
1
-0.76
0.0
-8.32
0.0
-17.1
0.0
0.06
0.00
1.2
0.0
2800 - 3799
3
0.25
0.2
16.83
8.9
-7.8
18.3
0.74
.61
-0.4
0.4
3800 - 4799
5
1.55
1.3
49.24
36.6
19.1
56.5
-0.94
.79
-1.2
1.4
4800 - 5799
0









ALL VEHICLES
9
0.86
1.3
32.04
34.1
6.1
43.9
1
o
•
fo
1.04
-0.7
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-7

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—MANU. TUNE-UP)
#
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
42.2
0.0
63.3
0.0
12.3
0.0
-201.0
0.0
-32.9
0.0
CHRYSLER
7
14.5
22.4
30.6
25.3
-0.5
5.0
-11.4
42.0
-6. 1
9.2
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
-15.1
0.0
-11.9
o
•
o
-4.8
o
•
o
5.4
0.0
6.3
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
8
14.9
25.7
29.9
30.9
0.3
6.8
-37.4
75.7
-7.8
13.9
1974
1
9.1
0.0
26.9
0.0
1.4
0.0
23.8
0.0
-6.9
0.0
1975
0










* VEHICLE TYPE











AUTOMOBILE
6
4.2
21.6
17.0
27.5
-0.2
6.7
-22.7
87.9
-5.1
14.4
TRUCK
3
34.3
15.9
54.6
7.0
1.8
6.8
-46.5
42.9
-13.1
9.4
*VEHICLE OWNER











GSA
5
30.3
17.8
47.2
22.3
3.4
7.0
-66.2
84.8
-14.7
13.1
PRIVATE OWNER
4
-5.8
12.7
7.5
20. 1
-3.2
3.1
13.9
12.7
1.0
6.0
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
12.2
24.8
30.0
34.7
0.3
8.2
-55.4
98.6
-8.7
16.7
NO CNV/NO APMP
5
15.9
26.3
29.2
27.7
0.5
5.5
-10.7
49.7
-7.0
11.3
*DISPLACEMENT











LESS THAN 151
1
-15.1
0.0
-11.9
0.0
-4.8
0.0
5.4
0.0
6.3
0.0
151 - 250
1
6.5
0.0
8.9
0.0
-0.8
0.0
9.5
0.0
-1.5
0.0
251 - 350
2
4.7
6. 3
24.8
3.1
-1.7
4.3
24.8
1.4
-3.7
4.6
MORE THAN 350
5
25.5
26.8
43.9
29.5
2.6
7.8
—68.0
82.9
-13.4
15.0
*INERTIA WEIGHT











1800 - 2799
1
-15.1
0.0
-11.9
0.0
-4.8
0.0
5.4
0.0
6.3
0.0
2800 - 3799
3
5.3
4.6
19.5
9.4
-1.4
3.1
19.7
8.9
-2.9
3.5
3800 - 4799
5
25.5
26.8
43.9
29.5
2.6
7.8
-68.0
82.9
-13.4
15.0
4800 - 5799
0










ALL VEHICLES 9 14.3 24.1 29.5 28.9 0.5 6.3 -30.6 73.7 -7.7 13.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-8

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)

OF
HC

CO

C02
NOX
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
5.59
0.0
40.43
0.0
619.5
0.0
3.90
0.00
CHRYSLER
7
3.70
1.0
44.37
10.3
600.7
97.5
3.97
1.06
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
3.90
1.1
42.98
9.0
581.4
126.9
3.84
1.19
1974
1
4.69
0.0
52.33
0.0
518.0
0.0
2.78
0.00
1975
0








*VEHICLE TYPE









AUTOMOBILE
6
3.90
1.3
46.94
9.6
529.3
121.2
3.63
1.29
TRUCK
3
4.17
0.8
38.19
3.9
664.6
56.1
3.91
1.12
* VEHICLE OWNER









GSA
5
4.05
1.3
42.75
9.4
608.8
108.9
3.89
.79
PRIVATE OWNER
4
3,91
0,8
45.62
9.6
531.3
136.2
3.51
1.64
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
3.90
1.6
48.48
8.7
597.1
114.0
4.13
.56
NO CNV/NO APMP
5
4.06
0.5
40. 46
8.3
556.2
135. 7
3.39
1.48
*DISPLACEMENT









LESS THAN 151
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
151 - 250
1
2.14
0.0
58.74
0.0
4 30.9
0.0
3.83
0.00
251 - 350
2
4.16
0.7
42.27
14.2
563.7
64.6
4.21
2.02
MORE THAN 350
5
4.20
1.1
41.54
6.9
653.2
44.2
3.89
.79
*INERTIA WEIGHT









1800 - 2799
1
4.42
0.0
45.21
0.0
345.2
0.0
1.80
0.00
2800 - 3799
3
3.49
1.3
47.76
13.8
519.4
89. 3
4.08
1.45
3800 - 4799
5
4.20
1.1
4 1.54
6.9
653.2
44.2
3.89
.79
4800 - 5799
0








ALL VEHICLES
9
3.99
1.1
44.02
9.0
574.4
120.6
3.72
1.17
MPG
3.2
0.0
3.3
0.9
2.1
3.9
2.4
3.5
0.0
0.0
0.9
0.7
0.0
1.8
0.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-9

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
0 OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.57
0.0
102.95
0.0
101.6
0.0 -2.90
0.00 -3.5
0.0
CHRYSLER
7
0.85
1.0
42.90
23.0
44.5
56.0 -0.89
.61 -1.7
0.9
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
0.61
0.0
24.90
0.0
' 11.5
0.0 -0.69
0.00 -2.2
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
0.80
0.9
48.90
31.1
46.0
57.3 -1.13
.92 -2.0
1.0
1974
1
0.70
0.0
36.93
0.0
56.4
0.0 -0.76
0.00 -2.3
0.0
1975
0








~VEHICLE TYPE









AUTOMOBILE
6
0.65
0.7
42.21
33.0
27.7
44.3 -0.95
.99 -1.8
1.1
TRUCK
3
1.08
1.3
58.30
22.0
86.1
56.8 -1.36
.62 -2.4
0.6
*VEHICLE OWNER









GSA
5
1.10
1.0
59.27
33.7
70.2
60.2 -1.53
.93 -2.3
1.1
PRIVATE OWNER
4
0.41
0.7
32.95
16.7
18.4
29.8 -0.53
.33 -1.6
0.8
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
0.37
1.0
48.96
41.0
49.2
51.7 -1.55
1.10 -1.8
1.3
NO CNV/NO APMP
5
1.13
0.7
46. 46
21.5
45.6
61.4 -0.72
.46 -2.2
0.6
~DISPLACEMENT









LESS THAN 151
1
0.61
0.0
24.90
0.0
11.5
0.0 -0.69
0.00 -2.2
0.0
151 - 250
1
1.68
0.0
18.50
0.0
-9.0
0.0 -0.68
0.00 -0.8
0.0
251 - 350
2
0.79
0.1
45.61
12.3
20.3
51.1 -0.40
.50 -1.8
0.7
MORE THAN 350
5
0.65
1.2
58.70
34.6
76.3
51.0 -1.52
.94 -2.3
1.1
*INERTIA WEIGHT









1800 - 2799
1
0.61
0.0
24.90
0.0
11.5
0.0 -0.69
0.00 -2.2
0.0
2800 - 3799
3
1.09
0.5
36.58
17.9
10.5
39.9 -0.50
.39 -1.5
0.8
3800 - 4799
5
0.65
1.2
58.70
34.6
76.3
51.0 -1.52
.94 -2.3
1.1
4800 - 5799
0








ALL VEHICLES
9
0.79
0.9
47.57
29.4
47.2
53.8 -1.09
.87 -2.0
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-10

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE



(BASELINE—PARA ADJ/DEVICE)



#
OF
HC

CO

C02
NOX MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
9.3
0.0
71.8
0.0
14.1
0.0
-290.0
0.0 -37.9
0.0
CHRYSLER
7
15.7
24.0
46.8
18.5
6.1
7.8
-37.9
32.5 -16.4
9.5
FORD MOTOR CO.
0









GENERAL MOTORS
0









IMPORTS
1
12.1
0.0
35.5
0.0
3.2
0.0
CM
•
I
0.0 -12.2
0.0
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
8
14.8
22.3
49.2
19.8
6.3
7.8
-72.5
93.3 -18.2
11.8
1974
1
13.0
0.0
41.4
0.0
9.8
0.0
-37.6
0.0 -19.0
0.0
1975
0








VEHICLE TYPE










AUTOMOBILE
6
12.3
21.8
43.1
20. 2
4.3
6. 6
-72.0
108.8 -15.1
12.2
TRUCK
3
19.1
22.6
59.0
10.8
11.5
7.6
-62.0
36.4 -24.8
4.8
*VEHICLE OWNER










GSA
5
22.1
20.6
54.5
19.5
9.3
8.4
-99.5
110.9 -23.4
12.3
PRIVATE OWNER
4
5.2
19.7
40.6
16.6
3.4
5.1
-30.1
26.1 -12.0
5.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
6.2
28.6
44.2
24.7
6.5
7.3
-99.5
128.9 -17.8
15.7
NO CNV/NO APMP
5
21.3
11.4
51.6
14.5
6.8
8.3
-44.0
36.5 -18.7
7.8
^DISPLACEMENT










LESS THAN 151
1
12.1
0.0
35.5
0.0
3.2
0.0
-62.2
0.0 -12.2
0.0
151 - 250
1
44.0
0.0
24.0
0.0
-2.1
0.0
-21.6
0.0 -4.8
0.0
251 - 350
2
16.2
4.6
52. 1
15. 1
3.6
8.8
-19.3
26.0 -14.9
5.8
MORE THAN 350
5
8.5
24.5
54.3
19.9
10.3
6.8
-99.1
111.3 -23.6
11.9
*INERTIA WEIGHT










1800 - 2799
1
12.1
0.0
35.5
0.0
3.2
0.0
-62.2
0.0 -12.2
0.0
2800 - 3799
3
25.5
16.3
42.7
19.4
1.7
7.1
-20.0
18.4 -11.5
7.1
3800 - 4799
5
8.5
24.5
54.3
19.9
10.3
6.8
-99.1
111.3 -23.6
11.9
4800 - 5799
0









ALL VEHICLES
9
14.6
20.9
48.4
18.7
6.7
7.4
-68.6
00
00
o
!
00
CO
11.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-ll

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
§ OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.86 0.0 52.14 0.0 609.7 0.0 2.82 0.00 12.6 0.0
CHRYSLER	7 4.40 1.9 48.07 20.3 588.3 92.1 4.13 1.00 13.2 1.6
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 5.17 0.0 52.90 0.0 346.2 0-0 1.62 0.00 19.9 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.96 1.1 44.29 11.2 572.3 119.2 3.87 1.22 14.0 2.8
1974	1 8.12 0.0 87.24 0.0 495.9 0.0 2.40 0.00 13.5 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE
6
4.35
2.1
54.59
18. 3
525.0
121.5
3.31
1.37
14.6
TRUCK
3
4.57
0.7
38.01
11.9
641.5
42.6
4.49
.36
12.4
* VEHICLE OWNER










GSA
5
4.21
0.7
45. 13
13.1
593.2
96.0
4.18
.80
13.3
PRIVATE OWNER
4
4.69
2.6
53.97
23.4
527.0
139.0
3.11
1.56
14.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
3.68
1.4
50.45
7.6
574.6
99.6
3.79
.92
13.5
NO CNV/NO APMP
5
5.02
1.8
47.95
24.1
555.2
136.0
3.64
1.57
14.2
*DISPLACEMENT










LESS THAN 151
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
151 - 250
1
3.46
0.0
59.50
0.0
432.0
0.0
4.60
0.00
16.5
251 - 350
2
5. 78
3.3
60.96
37.2
549.3
75.5
3.82
2.01
13.4
MORE THAN 350
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
*INERTIA WEIGHT










1800 - 2799
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
2800 - 3799
3
5.01
2.7
60.47
26.3
510.2
86.2
4.08
1.49
14.4
3800 - 4799
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
3.0
0.4
1.9
3.5
2.0
3.3
0.0
0.0
0.1
0.4
0.0
1.8
0.4
4800 - 5799 0
ALL VEHICLES 9 4.42 1.7 49.06 17.7 563.8 114.3 3.71 1.24 13.9 2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-12

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO	C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
1
2.30
0.0
91.24
0.0
111.4
CHRYSLER
7
0.15
1.5
39.19
24.7
56.8
FORD MOTOR CO.
0





GENERAL MOTORS
0





IMPORTS
1
-0. 14
0.0
17.21
0.0
10.5
*MODEL YEAR






1968
0





1969
0





1970
0





1971
0





1972
0





1973
8
0.74
1.0
47.60
26.5
55.2
1974
1
-2.73
0.0
2.02
0.0
78.5
1975
0





*VEHICLE TYPE






AUTOMOBILE
6
0.20
1.7
34.56
32.3
32.0
TRUCK
3
0.67
1.2
58.49
14. 1
109.2
*VEHICLE OWNER






GSA
5
0.94
1.1
56.89
27.9
85.8
PRIVATE OWNER
4
-0.37
1.7
24.59
20.9
22.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)


CNV/A.PMP
0





CNV/NO A.PMP
0





A.PMP/NO CNV
4
0.59
1.2
47.00
32.8
71.7
NO CNV/NO APMP
5
0.17
1.7
38.96
29.1
46.6
*DISPLACEMENT






LESS THAN 151
1
-0.14
0.0
17.21
0.0
10.5
151 - 250
1
0.36
0.0
17.74
0.0
-10. 1
251 - 350
2
-0.83
2.7
26.93
35. 2
34.7
MORE THAN 350
5
0.93
1.1
58.80
24.7
90.0
*INERTIA WEIGHT






1800 - 2799
1
-0.14
0.0
17.21
0.0
10.5
2800 - 3799
3
-0.43
2.0
23.87
25.5
19.8
3800 - 4799
5
0.93
1.1
58.80
24.7
90.0
4800 - 5799
0





ALL VEHICLES
9
0.36
1.5
42.53
29.1
57.7
10.5 0.0 -0.51 0.00 -1.5 0.0
66.3 -1.16 1.02 -2.0 1.1
0.0 -0.38 0.00 -1.3 0.0
50.7 -0.63
56.9 -1.95
67.0 -1.82
38.4 -0.13
.84 -1.5 1.0
.66 -2.7 0.7
.51 -2.4 1.2
.39 -1.3 0.3
86.7 -1.20 .83 -2.1 1.6
42.7 -0.97 1.19 -1.8 0.6
0.0	-0.51	0.00 -1.5	0.0
0.0	-1.45	0.00 -0.6	0.0
61.9	-0.01	.52 -1.3	0.0
59.8	-1.53	.99 -2.5	1.1
0.0 -0.51 0.00 -1.5 0.0
50.9 -0.49 .91 -1.1 0.5
59.8 -1.53 .99 -2.5 1.1
57.7 62.5 -1.07 .99 -1.9 1.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-13

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
it OF HC
VEH. MEAN S.D.
CO	CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
37.3
0.0
63.6
0.0
15.4
0.0
-182.0
0.0
CHRYSLER
7
4.4
27.7
43.9
24.0
7.8
9.1
-50.4
67.5
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
-2.8
o
4
O
24.5
o
•
o
2.9
0.0
-45.9
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
14.5
16.5
49.2
17.9
7.4
8.8
-70.2
76.1
1974
1
-50.6
0.0
2.3
0.0
13.7
0.0
-18.8
0.0
1975
0








*VEHICLE TYPE









AUTOMOBILE
6
5.1
30.5
35.5
23.6
5.0
7.7
-47.7
69.5
TRUCK
3
11.5
21.8
60.9
8.3
14.5
7.2
-98.2
82.6
* VEHICLE OWNER









GSA
5
16.3
19.4
53.8
18.3
11.3
9.2
-104.5
76.2
PRIVATE OWNER
4
-4.0
32.9
31.7
24.4
4.2
6.6
-14.5
23.6
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
11.9
20.6
44.5
17.3
9.3
11.8
-69.9
78.4
NO CNV/NO APMP
5
3.6
32.6
43.6
28.8
7.1
6.3
-60.1
77.9
*DISPLACEMENT









LESS THAN 151
1
-2.8
0.0
24.5
0.0
2.9
0.0
-45.9
0.0
151 - 250
1
9.4
0.0
23.0
0.0
-2.4
0.0
-46.0
0.0
251 - 350
2
-13.5
52.6
31.1
40.8
6. 1
10.7
-6.3
17.7
MORE THAN 350
5
17.1
19.1
57.2
11.4
12.1
7.8
-95.2
87.2
*INERTIA WEIGHT









1800 - 2799
1
-2.8
0.0
24.5
0.0
2.9
0.0
-45.9
0.0
2800 - 3799
3
-5.9
39.4
28.4
29.2
3.2
9.0
-19.5
26.2
3800 - 4799
5
17.1
19.1
57.2
11.4
12.1
7.8
-95.2
87.2
4800 - 5799
0








ALL VEHICLES
9
7.2
26.6
44.0
22.9
8.1
8.5
-64.5
73.2
0.0
8.1
14.0
1.9
-8.3
-3.5
-8.3
8.2
0.0
0.0
0.2
0.0
4.4
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-14

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
it	OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.86 0.0 52.14 0.0 609.7 0.0 2.82 0.00 12.6 0.0
CHRYSLER	7 4.40 1.9 48.07 20.3 588.3 92.1 4.13 1.00 13.2 1.6
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 5.17 0.0 52.90 0.0 346.2 0.0 1.62 0.00 19.9 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.96 1. 1 44. 29 1 1. 2 572.3 119. 2 3.87 1.22 14.0 2.8
1974	1 8.12 0.0 87.24 0.0 495.9 0.0 2.40 0.00 13.5 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 4.35 2.1 54.59 18.3 525.0 121.5 3.31 1.37 14.6 3.0
TRUCK	3 4.57 0.7 38.01 11.9 641.5 42.6 4.49 .36 12.4 0.4
* VEHICLE OWNER
GSA
5
4.21
0.7
45.13
13.1
593.2
96.0
4.18
.80
13.3
PRIVATE OWNER
4
4.69
2.6
53.97
23.4
527.0
139.0
3.11
1.56
14.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.KIP
0









A.PMP/NO CNV
4
3.68
1.4
50.45
7.6
574.6
99.6
3.79
.92
13.5
NO CNV/NO APMP
5
5.02
1.8
47.95
24.1
555.2
136.0
3.64
1.57
14.2
^DISPLACEMENT










LESS THAN 151
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
151 - 250
1
3.46
0.0
59.50
0.0
432.0
0.0
4.60
0.00
16.5
251 - 350
2
5.78
3.3
60.96
37.2
549.3
75.5
3.82
2.01
13.4
MORE THAN 350
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
*INERTIA WEIGHT










1800 - 2799
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
2800 - 3799
3
5.01
2.7
60.47
26.3
510.2
86.2
4.08
1.49
14.4
3800 - 4799
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
4800 - 5799
1.9
3.5
2.0
3.3
0.0
0.0
0.1
0.4
0.0
1.8
0.4
ALL VEHICLES 9 4.42 1.7 49.06 17.7 563.8 114.3 3.71 1.24 13.9 2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-15

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
*VEHICLE MANUFACTURER
CO
MEAN S.D.
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
1 -0.30
7 -0.69
0
0
1
0.0 0.52 0.0 22.9 0.0 0.19 0.00 -0.4 0.0
1.5 9.77 19.5 59.2 73.2 -0.98 .56 -1.1 0.9
0.62 0.0 25.53 0.0 27.6 0.0 -0.57 0.00 -2.7 0.0
0
0
0
0
0
8 -0.16
1	-3.22
0
6 -0.17
3 -1.18
5 -0.75
4 -0.20
0.9 14.55
0.0 -22.01
1.6
0.3
0.6
2.0
13.29
4.89
5.21
17.10
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4-0.23 0.9 9.94
NO CNV/NO APMP	5-0.72 1.7 10.93
*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
*INERTIA WEIGHT
1 0.62
1	0.11
2	-1.08
5 -0.62
0.0
0.0
3.0
0.9
25.53
10.83
5.14
9.56
14. 2
0.0
21.4
9.0
7.4
26.3
16.3
21. 2
0.0
0.0
38.4
14.5
49.3 69.2 -0.80 .67 -1.3 1.0
70.5 0.0 -0.86 0.00 -0.5 0.0
29.4 25.9 -0.68
96.0 104.3 -1.05
60.9 88.7 -0.94
40.1 22.7 -0.63
.72 -1.1 0.9
.38-1.5 1.3
68.7
38.0
99.8 -0.55
22.2 -1.01
.75 -1.0
.47 -1.5
.88 -1.3
.31 -1.2
1.1
0.9
1.2
0.9
27.6	0.0 -0.57	0.00	-2.7	0.0
-6.7	0.0 -1.75	0.00	-0.3	0.0
44.7	36.6 -0.97	.16	-0.9	0.6
70.9	81.7 -0.59	.69	-1.2	1.1
1800 - 2799
1 0.62
0.0
25.53
0.0
27.6
0.0 -0.57
0.00 -2.7
0.0
2800 - 3799
3 -0.68
2.2
7.03
27.3
27.5
39.3 -1.23
.46 -0.7
0.5
3800 - 4799
5 -0.62
0.9
9.56
14.5
70.9
81.7 -0.59
.69 -1.2
1.1
4800 - 5799
0







ALL VEHICLES
9 -0.50
1.3
10.49
18.0
51.6
65.2 -0.80
.63 -1.2
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-16

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(MANU. TUNE-UP-TUNEUP/PARADJ/DEV)
If OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
-8.4
0.0
1.0
0.0
3.6
0.0
6.3
0.0 -3.3
CHRYSLER
7
-16.7
35.1
15.9
29.8
8.1
9.2
-34.5
22.5 -10.4
FORD MOTOR CO.
0








GENERAL MOTORS
0








IMPORTS
1
10.7
0.0
32.6
0.0
7.4
0.0
-54.3
0.0 -15.6
*M0DEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
8
-6.2
26.5
22.3
20.9
6.9
8.5
-29.2
25.1 -11.0
1974
1
-65.7
0.0
-33.7
0.0
12.4
0.0
-55.8
0.0 -3.9
1975
0






*VEHICLE TYPE









AUTOMOBILE
6
-1.7
33.9
17.9
30.9
5.2
4.7
-31.9
29.8 -8.1
TRUCK
3
-34.9
7.5
12.4
22.3
12.3
12.6
-32.6
17.1 -14.3
*VEHICLE OWNER









GSA
5
-22.0
18.9
10.7
16.7
7.8
11.0
-30.6
27.0 -9.6
PRIVATE OWNER
4
-1.2
43.5
22.8
38.3
7.2
3.9
-34.1
26.5 -10.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
4
-4.0
26. 5
12.8
23.3
8.7
12.4
-17.9
30.6 -12.0
NO CNV/NO APMP
5
-19.8
36.8
18.7
32.2
6.6
3.9
-43.6
13.9 -8.7
~DISPLACEMENT









LESS THAN 151
1
10. 7
0.0
32.6
0.0
7.4
0.0
-54.3
0.0 -15.6
151 - 250
1
3.1
0.0
15.4
0.0
-1.6
0.0
-61.4
0.0 -2.0
251 - 350
2
-21.1
63. 1
7.2
57.9
7.7
6.7
-41.1
20.9 -7.4
MORE THAN 350
5
-17.3
27.6
16.5
22.7
9.3
9.8
-18.3
23.1 -11.9
*INERTIA WEIGHT









1800 - 2799
1
10.7
0.0
32.6
0.0
7.4
0.0
-54.3
0.0 -15.6
2800 - 3799
3
-13.0
46.7
10.0
41.2
4.6
7.1
-47.8
18.9 -5.6
3800 - 4799
5
-17.3
27.6
16.5
22.7
9.3
9.8
-18.3
23.1 -11.9
4800 - 5799
0








ALL VEHICLES
9
-12.8
31.8
16.1
27.0
7.5
8.1
-32.1
25.1 -10.2
9.1
0.0
5.8
11.6
5.1
5.1
0.0
0.0
4.9
0.0
4.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-17

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 3.86 0.0 52.14 0.0 609.7 0.0 2.82 0.00 12.6 0.0
CHRYSLER	7 4.40 1.9 48.07 20.3 588.3 92.1 4.13 1.00 13.2 1.6
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1. 5.17 0.0 52.90 0.0 346.2 0.0 1.62 0.00 19.9 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	8 3.96 1.1 44.29 11.2 572.3 119.2 3.87 1.22 14.0 2.8
1974	1 8.12 0.0 87.24 0.0 495.9 0.0 2.40 0.00 13.5 0.0
1975	0
* VEHICLE TYPE
AUTOMOBILE	6 4.35 2.1 54.59 18.3 525.0 121.5 3.31 1.37 14.6 3.0
TRUCK	3 4.57 0.7 38.01 11.9 641.5 42.6 4.49 .36 12.4 0.4
~VEHICLE OWNER
GSA	5 4.21 0.7 45.13 13.1 593.2 96.0 4.18 .80 13.3 1.9
PRIVATE OWNER	4 4.69 2.6 53.97 23.4 527.0 139.0 3.11 1.56 14.7 3.5
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV
4
3.68
.1.4
50.45
7.6
574.6
99.6
3.79
.92
13.5
2.0
NO CNV/NO APMP
5
5.02
1.8
47.95
24.1
555.2
136.0
3.64
1.57
14.2
3.3
~DISPLACEMENT











LESS THAN 151
1
5. 17
0.0
52.90
0.0
346. 2
0.0
1.62
0.00
19.9
0.0
151 - 250
1
3.46
0.0
59.50
0.0
432.0
0.0
4.60
0.00
16.5
0.0
251 - 350
2
5.78
3. 3
60.96
37.2
549.3
75.5
3.82
2.01
13.4
0.1
MORE THAN 350
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
0.4
~INERTIA WEIGHT











1800 - 2799
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
0.0
2800 - 3799
3
5.01
2.7
60.47
26.3
510.2
86.2
4.08
1.49
14.4
1.8
3800 - 4799
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
0.4
4800 - 5799
0










ALL VEHICLES
9
4.42
1.7
49.06
17.7
563.8
114.3
3.71
1.24
13.9
2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-18

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
1
7
0
0
1
1.73
-0.70
0.0 -11.71
1.4 -3.71
0.0
15.9
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
9.8 0.0 1.08 0.00 0.1 0.0
12.3 51.7 -0.16 .80 -0.0 0.8
-0.75 0.0 -7.69 0.0 -1.0 0.0 0.18 0.00 0.7 0.0
0
0
0
0
0
8 -0.06
1	-3.43
0
6 -0.45
3 -0.40
5 -0.16
4 -0.78
1.0 -1.30
0.0 -34.91
1.8 -7.65
0.3 0.18
1.1 -2.38
1.9 -8.35
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
*INERTIA WEIGHT
1800 -	2799
2800 -	3799
3800 -	4799
4800 -	5799
0
0
4	0.22
5	-0.96
1	-0.75
1	-1.32
2	-1.62
5 0.28
1.4 -1.97
1.4 -7.49
0.0 -7.69
0.0 -0.76
2.6 -18.68
1.0 0.10
9.0
0.0
15.5
11.1
9.4
19.5'
10. 1
17.3
0.0
0.0
22.9
11.4
9.1 47.9 -0.03 .85 -0.0 0.7.
22.1 0.0 0.38 0.00 1.0 0.0
4.3
23. 1
15.6
4.3
22.5
1.0
-1.0
-1.1
14.4
13.7
11.3 0.32
86.1 -0.59
.62 0.3 0.5
.92 -0.3 1.2
61.9 -0.29 1.01 -0.1 0.9
13.9 0.40 .19 0.4 0.6
47.0 0.35
46.2 -0.25
.79 -0.3 0.7
.80 0.4 0.7
0.0	0.18	0.00 0.7	0.0
0.0	-0.77	0.00 0.2	0.0
10.9	0.39	.01 0.5	0.7
62.7	-0.01	1.04 -0.2	0.9
1 -0.75
3 -1.52
5 0.28
0
0.0 -7.69 0.0 -1.0 0.0 0.18 0.00 0.7 0.0
1.8 -12.71 19.2 9.2 11.8 0.00 .67 0.4 0.5
1.0 0.10 11.4 13.7 62.7 -0.01 1.04 -0.2 0.9
ALL VEHICLES
9 -0.43 1.4 -5.04 14.0 10.6 45.0 0.02 .81 0.1 0.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011'
F-19

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(PARA ADJ/DEVICE-TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN ' S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
30.9
0.0 -29.0
0.0
1.6
0.0
27.7
0.0
0.5
0.0
CHRYSLER
7
-18.6
36.8 -7.5
32.3
1.7
8.0
-6.3
24.6
-0.5
6.6
FORD MOTOR CO.
0









GENERAL MOTORS
0









IMPORTS
1
-17.0
o
¦—*
o
o
0.0
-0.3
0.0
10.0
0.0
3.4
0.0
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
8
-5.4
29.8 -3.9
21.4
1.1
7.3
-2.5
25. 5
-0.8
5.7
1974
1
-73. 1
0.0 -66.7
0.0
4.3
0.0
13.7
0.0
6.7
0.0
1975
0









*VEHICLE TYPE










AUTOMOBILE
6
-14.2
45.0 -16.6
29.9
0.8
2.0
9.2
16.0
1.7
3.0
TRUCK
3
-10. 3
8.5 0.4
28.8
2.8
13.4
-20.6
29.3
-3.2
9.7
*VEHICLE OWNER










GSA
5
-12.3
33.4 -5.8
24.1
1.9
9.6
-10.8
29.9
-1.6
7.2
PRIVATE OWNER
4
-13.6
44.1 -17.3
36.9
0.9
2.5
11.9
4.3
2.1
3.7
~CONTROL OPTIONS(CONVERTER,AIR PUMP)







CNV/A.PMP
0









CNV/NO A.PMP
0




,




A.PMP/NO CNV
4
-2.1
43.7 -6.2
22.0
3.3
6.9
8.3
20.5
-2.8
5.9
NO CNV/NO APMP
5
-21.6
30.6 -14.7
35.7
0.0
7.4
-7.9
27.1
2.3
5.3
~DISPLACEMENT










LESS THAN 151
1
-17.0
0.0 -17.0
0.0
-0.3
0.0
10.0
0.0
3.4
0.0
151 - 250
1
-61.7
0.0 -1.3
0.0
-0.3
0.0
-20.1
0.0
1.3
0.0
251 - 350
2
-34.0
55.4 -37.2
41.8
2.7
2.2
10.4
4.7
3.1
5.0
MORE THAN 350
5
6. 1
23.2 -1.1
27.3
1.7
9.7
-3.4
31.6
-2.1
7.0
~INERTIA WEIGHT










1800 - 2799
1
-17.0
0.0 -17.0
0.0
-0.3
0.0
10.0
0.0
3.4
0.0
2800 - 3799
3
-43.2
42.3 -25.2
36. 1
1.7
2.3
0.2
17.9
2.5
3.7
3800 - 4799
5
6.1
23.2 -1.1
27.3
1.7
9.7
-3.4
31.6
-2.1
7.0
4800 - 5799
0








ALL VEHICLES
9
-12.9
35.9 -10.9
29.0
1.5
7.0
-0.7
24.5
o
«
o
5.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
F-20

-------
APPENDIX G
TABLES OF TEST RESULTS
DATA SET 1
DATA SET 2
DATA SET 3
DATA SET A
PAGE G-2
PAGE G-14
PAGE G-26
PAGE G-48
G-l

-------
1975 VEHICLES
DATA SET 1
2 VEHICLES
G-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.41 0.0 70.26 0-0 447.6 0.0 3.44 0.00 15.6 0.0
FORD MOTOR CO.	0
GENERAL MOTORS .	1 1.41 0.0 31.46 0.0 530.9 0.0 0.92 0.00 15.2 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
*VEHICLE OWNER
GSA	2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 1.41 0.0 31.46 0.0 530.9 0.0 0.92 0.00 15.2 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.41 0.0 70.26 0.0 447.6 0.0 3.44 0.00 15.6 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
4800 - 5799	0
ALL VEHICLES 2 2.41 1.4 50.86 27.4 489.2 58.9 2.18 1.78 15.4 0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
L9900 E. COLFAX, AURORA, COLO. 80011
G-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(PARAMETRIC ADJ.)
#	OF HC CO CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.29 0.0 43.20 0.0 454.7 0-0 5.24 0.00 16.6 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 2.99 0.0 12.25 0-0 551.6 0.0 2.38 0.00 15.3 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
^VEHICLE OWNER
GSA	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 2.99 0.0 12.25 0.0 551.6 0.0 2.38 0.00 15.3 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.29 0.0 43.20 0.0 454.7 0.0 5.24 0.00 16.6 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800-4799	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
4800 - 5799	0
ALL VEHICLES	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-4

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 19 75 VEHICLES—HOT START DATA)
(BASELINE-PARAMETRIC ADJ.)
//OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.29 0.0 43.20 0.0 454.7 0.0 5.24 0.00 16.6 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 2.99 0.0 12.25 0.0 551.6 0.0 2.38 0.00 15.3 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
^VEHICLE OWNER
CSA	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 2.99 0.0 12.25 0.0 551.6 0.0 2.38 0-00 15.3 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.29 0.0 43.20 0.0 454.7 0.0 5.24 0.00 16.6 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 3.14 0.2 27.72 21.9 503.1 68.5 .. 3.81 2.02 16.0 1.0
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800-4799	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
4800 - 5799	0
ALL VEHICLES	2 3.14 0.2 27.72 21.9 503.1 68.5 3.81 2.02 16.0 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(BASELINE-PARAMETRIC ADJ.)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 0-12 0.0 27.06 0.0 -7.1 0.0-1.800.00-1.0 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 -1.58 0.0 19.21 0.0 -20.7 0.0 -1.46 0.00 -0.1 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 -0.73 1.2 23.13 5.6 -13.9 9.6 -1.63 .24 -0.6 0.7
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2-0.73 1.2 23.13 5.6 -13.9 9.6-1.63 .24-0.6 0.7
*VEHICLE OWNER
GSA	2-0.73 1.2 23.13 5.6 -13.9 9.6-1.63 .24-0.6 0.7
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1-1.58 0.0 19.21 0.0 -20.7 0.0-1.46 0.00-0.1 0.0
A. PMP/NO CNV	0
NO CNV/NO APMP	1 0.12 0.0 27.06 0.0 -7.1 0.0 -1.80 0.00 -1.0 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 -0.73 1.2 23.13 5.6 -13.9 9.6 -1.63 .24 -0.6 0.7
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800-4799	2-0.73 1.2 23.13 5.6 -13.9 9.6-1.63 .24-0.6 0.7
4800 - 5799	0
ALL VEHICLES 2 -0.73 1.2 23.13 5.6 -13.9 9.6 -1.63 .24 -0.6 0.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-6

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PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-PARAMETRIC ADJ.)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.5 0.0 38.5 0.0 -1.6 0.0 -52.3 0.0 -6.7 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 -112.1 0.0 61.1 0.0 -3.9 0.0-158.7 0.0 -0-7 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
*VEHICLE OWNER
GSA	2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 -112.1 0.0 61.1 0.0 -3.9 0.0-158.7 0.0 -0.7 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.5 0.0 38.5 0.0 -1.6 0.0 -52.3 0.0 -6.7 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799 ¦	0
2800 - 3799	0
3800 - 4799	2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
4800 - 5799	0
ALL VEHICLES 2 -54.3 81.7 49.8 15.9 -2.7 1.6 -105.5 75.2 -3.7 4.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-7

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EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA>
(BASELINE—PARA ADJ/DEVICE)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.07 0.0 37.73 0.0 453.6 0.0 3.88 0.00 17.0 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0.57 0.0 11.46 0.0 532.0 0.0 2.91 0.00 16.1 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
*VEHICLE OWNER
GSA	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.57 0.0 11.46 0.0. 532.0 0.0 2.91 0.00 16.1 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.07 0.0 37.73 0.0 453.6 0.0 3.88 0.00 17.0 0.0
~DISPLACEMENT
LESS THAN 151	0
151 - 250	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
4800 - 5799	0
ALL VEHICLES 2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-3

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EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-^—HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
#	OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 0.34 0.0 32.53 0.0 -6.0 0.0 -0.44 0.00 -1.4 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0.84 0.0 20.00 0.0 -1.1 0.0-1.99 0.00-0.9 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 0.59 0.4 26.26 8.9 -3.6 3.5 -1.22 1.10 -1.1 0.3
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 0.59 0.4 26.26 8.9 -3.6 3.5 -1.22 1.10 -1.1 0.3
*VEHICLE OWNER
GSA	2 0.59 0.4 26.26 8.9 -3.6 3.5 -1.22 1.10 -1.1 0.3
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.84 0.0 20.00 0.0 -1.1 0.0-1.990.00-0.9 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 0.34 0.0 32.53 0.0 -6.0 0.0 -0.-44 0.00 -1.4 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 0.59 0.4 26.26 8.9 -3.6, 3.5 -1.22 1.10 -1.1 0.3
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 0.59 0.4 26.26 8.9 -3.6 3.5 -1.22 1.10 -1.1 0.3
4800 - 5799	0
ALL VEHICLES 2 0.59 0.4 26.26 8.9 -3.6 3.5-1.22 1.10-1.1 0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(BASELINE—PARA ADJ/DEVICE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 10.0 0.0 46.3 0.0 -1.3 0.0 -12.8 0.0 -8.8 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 59.6 0.0 63.6 0.0 -0.2 0.0 -216.3 0.0 -5.9 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 34.8 35.1 54.9 12.2 -0-8 0.8 -114.5 143.9 -7.4 2.1
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 34.8 35.1 54.9 12.2 -0.8 0.8 -114.5 143.9 -7.4 2.1
*VEHICLE OWNER
CSA	2 34.8 35.1 54.9 12.2 -0.8 0.8 -114.5 143.9 -7.4 2.1
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 59.6 0.0 63.6 0.0 -0.2 0.0 -216.3 0.0 -5.9 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 10.0 0.0 46.3 0.0 -1.3 0.0 -12.8 0.0 -8.8 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 34.8 35.1 54.9 12.2 -0.8 0.8 -114.5 143.9 -7.4 2.1
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 34.8 35.1 54.9 12.2 -0.8 0.8 -114.5 143.9 -7.4 2.1
4800 - 5799	0
ALL VEHICLES 2 34.8 35.1 54.9 12.2 -0.8 0.8-114.5 143.9 -7.4 2.1
AUTOMOTIVE TESTING LABORATORIES,IMC.
19900 E. COLFAX, AURORA, COLO. 80011
G-10

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EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.07 0.0 37.73 0.0 453.6 0.0 3.88 0.00 17.0 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0.57 0.0 11.46 0.0 532.0 0.0 2.91 0.00 16.1 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0.
1973	0
1974	0
1975	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
*VEHICLE OWNER
GSA	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.57 0.0 11.46 0.0 532.0 0.0 2.91 0.00 16.1 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.07 0.0 37.73 0.0 453.6 0.0 3.88 0.00 17.0 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
4800 - 5799	0
ALL VEHICLES 2 1.82 1.8 24.59 18.6 492.8 55.4 3.39 .69 16.5 0.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-ll

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EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
VEH." MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D,
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 0.22 0.0 5.47 0.0 1.1 0.0 1.36 0.00-0.3 0-0
FORD MOTOR CO.	0
GENERAL MOTORS	1 2.42 0.0 0.79 0.0 19.6 0.0 -0.53 0.00 -0.8 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34 -0.6 0.3
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34 -0.6 0.3
^VEHICLE OWNER
GSA	2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34-0.6 0.3
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 2.42 0.0 0.79 0.0 19.6 0.0 -0.53 0.00 -0.8 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 0.22 0.0 5.47 0.0 1.1 0.0 1.36 0.00-0.3 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34 -0.6 0.3
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34 -0.6 0.3
4800 - 5799	0
ALL VEHICLES 2 1.32 1.6 3.13 3.3 10.3 13.1 0.41 1.34-0.6 0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-12

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PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
// OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 6.7 0.0 12.7 0.0 0.2 0.0 26.0 0.0 -2.0 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 80.9 0-0 6.4 0.0 3.6 0.0 -22.3 0.0 -5.2 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
19 74	0
1975	2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
*VEHICLE OWNER
GSA	2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 80.9 0.0 6.4 0.0 3.6 0-0 -22.3 0-0 -5.2 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 6.7 0.0 12.7 0.0 0.2 0.0 26.0 0.0 -2.0 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
4800 - 5799	0
ALL VEHICLES 2 43.8 52.5 9.6 4.4 1.9 2.3 1.8 34.1 -3.6 2.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G—13

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1975 VEHICLES
DATA SET 2
5 VEHICLES
G-14

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE)
if
OF
HC

CO

i
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
*VEHICLE MANUFACTURER




AMER. MOTORS
1
2.23
0.0
70.26
0.0
402.7
CHRYSLER
0



FORD MOTOR CO.
0





GENERAL MOTORS
3
2.06
0.7
34.96
21.8
525.6
IMPORTS
1
0.60
0.0
8.50
0.0
352.2
*MODEL YEAR






1968
0





1969
0





1970
0





1971
0





1972
0





1973
0





1974
0





1975
5
1.80
0.8
36.73
26.8
466.3
*VEHICLE TYPE






AUTOMOBILE
3
1.79
1.0
43.51
31.7
379.6
TRUCK
2
1.81
0.8
26.55
22.9
596.4
*VEHICLE OWNER






GSA
1
2.35
0.0
42.76
0.0
553.6
PRIVATE OWNER
4
1.66
0.9
35.22
30.7
444.5
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)


CNV/A.PMP
1
1.28
0.0
10.35
0.0
639.2
CNV/NO A.PMP
2
2.44
0.1
47.27
6.4
468.8
A.PMP/NO CNV
1
0.60
o.o
8.50
0.0
352.2
NO CNV/NO APMP
1
2.23
0.0
70.26
0.0
402.7
^DISPLACEMENT






LESS THAN 151
1
0.60
0.0
8.50
0.0
352.2
151 - 250
2
2.44
0.1
47.27
6.4
468.8
251 - 350
2
1.75
0.7
40.30
42.4
520.9
MORE THAN 350
0




*INERTIA WEIGHT






1800 - 2799
0





2800 - 3799
3
1.79
1.0
43.51
31.7
379.6
3800 - 4799
2
1.81
0.8
26.55
22.9
596.4
4800 - 5799
0



C02	NOX	MPG
S.D. MEAN S.D. MEAN S.D.
0.0 1.82 0.00 17.1 0.0
>9.9 1.48 .35 15.A 2.9
0.0 1.AO 0.00 24.1 0.0
1.53 .30 17.5 4.3
25.5 1.43 .37 20.0 3.7
60.5 1.68 .10 13.8 0.5
0.0 1.61 0.00 14.1 0.0
31.4 1.51 .34 18.4 4.4
0.0	1.75	0.00	13.5	0.0
19.9	1.34	.37	16.4	3.3
0.0	1.40	0.00	24.1	0.0
0.0	1.82	0.00	17.1	0.0
0.0 1.40 0.00 24.1 0.0
19.9 1.34 .37 16.4 3.3
37.2 1.78 .05 15.3 2.5
25.5 1.43 .37 20.0 3.7
60.5 1.68 .10 13.8 0.5
ALL VEHICLES 5 1.80 0.8 36.73 26.8 466.3 123.8 1.53 .30 17.5 4.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-15

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EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(MANU. TUNE-UP)
#	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 1.99 0.0 53.88 0.0 397.3 0.0 1.28 0.00 18.2 0.0
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3 1.81 0.9 29.25 22.6 513.6 140.0 1.51 .55 16.1 3.0
IMPORTS	1 0.48 0.0 6.40 0.0 341.9 0.0 1.45 0.00 25.1 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5 1.58 0.9 29.60 23.2 456.0 128.1 1.45 .40 18.3 4.4
*VEHICLE TYPE
AUTOMOBILE	3 1.75 1.2 38.41 27.7 368.8 27.7 1.27 .19 20.8 3.7
TRUCK	2 1.32 0.3 16.39 5.4 586.7 84.2 1.72 .57 14.5 1.8
*VEHICLE OWNER
GSA	1 1.54 0.0 20.19 0.0 527.2 0.0 2.13 0.00 15.7 0.0
PRIVATE OWNER	4 1.59 1.0 31.96 26.1 438.2 140.6 1.28 .15 18.9 4.9
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	1 1.11 0.0 12.59 0.0 646.3 0.0 1.32 0.00 13.3 0.0
CNV/NO A.PMP	2 2.16 0.9 37.57 24.6 447.2 113.1 1.60 .74 17.5 2.4
A.PMP/NO CNV	1 0.48 0.0 6.40 0.0 341.9 0.0 1.45 0.00 25.1 0.0
NO CNV/NO APMP	1 1.99 0.0 53.88 0.0 397.3 0.0 1.28 0.00 18.2 0.0
~DISPLACEMENT
LESS THAN 151
1
0.48
0.0
6.40
0.0
341.9
0.0
1.45
0.00
25.1
0.0
151 - 250
2
2.16
0.9
37.57
24.6
447.2
113.1
1.60
.74
17.5
2.4
251 - 350
2
1.55
0.6
33.24
29.2
521.8
176.1
1.30
.03
15.7
3.5
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.75
1.2
38.41
27.7
368.8
27.7
1.27
.19
20.8
3.7
3800 - 4799
2
1.32
0.3
16.39
5.4
586.7
84.2
1.72
.57
14.5
1.8
4800 - 5799
ALL VEHICLES 5 1.58 0.9 29.60 23.2 456.0 128.1 1.45 .40 18.3 4.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-16

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(BASELINE—-MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
1.99
0.0
53.88
0.0
397.3
0.0
1.28
0.00
18.2
0.0
CHRYSLER
0








FORD MOTOR CO.
0










GENERAL MOTORS
3
1.81
0.9
29.25
22.6
513.6
140.0
1.51
.55
16.1
3.0
IMPORTS
1
0.48
0.0
6.40
0.0
341.9
0.0
1.45
0.00
25.1
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
1.58
0.9
29.60
23.2
456.0
128.1
1.45
.40
18.3
4.4
*VEHICLE TYPE











AUTOMOBILE
3
1.75
1.2
38.41
27.7
368.8
27.7
1.27
.19
20.8
3.7
TRUCK
2
1.32
0.3
16.39
5.4
586.7
84.2
1.72
.57
14.5
1.8
*VEHICLE OWNER











GSA
1
1.54
0.0
20. 19
0.0
527.2
0.0
2.13
0.00
15.7
0.0
PRIVATE OWNER
4
1.59
1.0
31.96
26.1
438.2
140.6
1.28
. 15
18.9
4.9
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
1.11
0.0
12.59
0.0
646.3
0.0
1.32
0.00
13.3
0.0
CNV/NO A.PMP
2
2.16
0.9
37.57
24.6
44 7.2
113.1
1.60
.74
17.5
2.4
A.PMP/NO CNV
1
0.48
0.0
6.40
0.0
341.9
0.0
1.45
0.00
25.1
0.0
NO CNV/NO APMP
1
1.99
0.0
53.88
0.0
397.3
0.0
1.28
0.00
18.2
0.0
1
0.48
0.0
6.40
0.0
341.9
0.0
1.45
0.00
25.1
0.0
2
2.16
0.9
37.57
24.6
447.2
113. 1
1.60
.74
17.5
2.4
2
0
1.55
0.6
33.24
29.2
521.8
176.1
1.30
.03
15.7
3.5
*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
*INERTIA WEIGHT
1800 - 2799 0
2	l'l 3?-A1 27-7 368-8 27*7 l-27 .19 20.8 3.7
4800 ~ 5799	0	°	9 5,4 386'7 84'2 1,72 *37 14,5 1,8
ALL VEHICLES 5 1.58 0.9 29.60 23.2 456.0 128.1 1.45 .40 18.3 4.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-17

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.24
0.0
16.38
0.0
5.4
0.0 0.54
•
I
o
o
o
0.0
CHRYSLER
0






FORD MOTOR CO.
0








GENERAL MOTORS
3
0.25
0.5
5.72
14.6
12.0
17.2 -0.03
.48 -0.6
0.9
IMPORTS
1
0.12
0.0
2.10
0.0
10.3
0.0 -0.05
0.00 -1.0
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
5
0.22
0.4
7.13
11.7
10.3
12.5 0.08
.42 -0.8
0.7
*VEHICLE TYPE









AUTOMOBILE
3
0.04
0.2
5.10
10.1
10.8
5.7 0.16
.33 -0.8
0.4
TRUCK
2
0.49
0.5
10.16
17.5
9.7
23.7 -0.05
.67 -0.7
1.3
*VEHICLE OWNER









GSA
1
0.81
0.0
22.57
0.0
26.4
0.0 -0.52
0.00 -1.6
0.0
PRIVATE OWNER
4
0.07
0.2
3.26
9.0
6.3
10.1 0.23
.30 -0.6
0.6
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
1
0.17
0.0
-2.24
0.0
-7.1
0.0 0.43
0.00 0.2
0.0
CNV/NO A.PMP
2
0.29
0.7
9.69
18.2
21.6
6.9 -0.26
.37 -1.0
0.8
A.PMP/NO CNV
1
0.12
0.0
2.10
0.0
10.3
0.0 -0.05
0.00 -1.0
0.0
NO CNV/NO APMP
1
0.24
0.0
16.38
0.0
5.4
0.0 0.54
0.00 -1.1
0.0
*DISP LAC EMENT









LESS THAN 151
1
0.12
0.0
2.10
0.0
10.3
0.0 -0.05
0.00 -1.0
0.0
151 - 250
2
0.29
0.7
9.69
18.2
21.6
6.9 -0.26
.37 -1.0
0.8
251 - 350
2
0.20
0.0
7.07
13.2
-0.9
8.8 0.49
.08 -0.5
0.9
MORE THAN 350
0








*INERTIA WEIGHT









1800 - 2799
0








2800 - 3799
3
0.04
0.2
5.10
10.1
10.8
5.7 0.16
.33 -0.8
0.4
3800 - 4799
2
0.49
0.5
10.16
17.5
9.7
23.7 -0.05
.67 -0.7
1.3
4800 - 5799
0








ALL VEHICLES
5
0.22
0.4
7.13
11.7
10.3
12.5 0.08
.42 -0.8
0.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-18

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
#
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
10.8
0.0
23.3
0.0
1.3
0.0
29.7
0.0
-6.6
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
12.8
22.0
8.3
39.3
2.7
3.3
-2.6
28.5
-A. 1
6.6
IMPORTS
1
20.0
0.0
2A.7
0.0
2.9
0.0
-3.6
0.0
-A.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










197A
0










19 75
5
13.8
15.9
1A.6
29.1
2.5
2.A
3.7
2A.9
-A.6
A.8
*VEHICLE TYPE











AUTOMOBILE
3
7.1
15.1
1 A. 0
17.A
2.9
1.5
8.7
18.2
-A. 3
2.1
TRUCK
2
23.9
15.0
15.6
52.6
1.8
A.2
-3.9
AO.2
-5.0
9.1
*VEHICLE OWNER











GSA
1
3A.5
0.0
52.8
0.0
A.8
0.0
-32.3
0.0
-11.A
0.0
PRIVATE OWNER
A
8.6
12.7
5.1
22.8
1.9
2.3
12.7
16.9
-2.9
3.A
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
13.3
0.0
-21.6
0.0
-1.1
0.0
2A.6
0.0
1.5
0.0
CNV/NO A.PMP
2
12.5
31.1
23.3
A1. 7
A.6
0.3
-16.1
22.8
-6.9
6.A
A.PMP/NO CNV
1
20.0
0.0
2A.7
0.0
2.9
0.0
-3.6
0.0
-A. 0
0.0
NO CNV/NO APMP
1
10.8
0.0
23.3
0.0
1.3
0.0
29.7
0.0
-6.6
0.0
*DISPLACEMENT
LESS THAN 151
1
20.0
0.0
2A.7
0.0
2.9
0.0
-3.6
0.0
-A.0
0.0
151 - 250
2
12.5
31.1
23.3
41.7
A.6
0.3
-16.1
22.8
-6.9
6.A
251 - 350
2
12.0
1.8
0.8
31.8
0.1
1.7
27.1
3.6
-2.5
5.7
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
7.1
15.1
1A.0
17.A
2.9
1.5
8.7
18.2
-A.3
2.1
3800 - A799
2
23.9
15.0
15.6
52.6
1.8
A.2
-3.9
AO.2
-5.0
9.1
A800 - 5799
ALL VEHICLES
13.8 15.9 1A.6 29.1
2.5 2.A
3.7 2A.9 -A.6 A.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-19

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.32
0.0
9.26
0.0
442.7
0.0
3.75
0.00
19.2
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
1.62
0.7
21.12
17.6
496.1
105.7
2.60
1.38
16.9
2.4
IMPORTS
1
0.52
0.0
3.35
0.0
326.7
0.0
2.00
0.00
26.6
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
1.34
0.7
15.19
15.0
451.6
104.9
2.71
1.16
19.3
4.6
*VEHICLE TYPE











AUTOMOBILE
3
1.42
1.0
17.99
20. 5
389.7
58.6
2.47
1.12
21.5
4.4
TRUCK
2
1.22
0.1
10.99
1.6
544.4
91.5
3.06
1.58
15.9
2.5
*VEHICLE OWNER











GSA
1
1.17
0.0
12. 11
0.0
479.7
0.0
4.18
0.00
17.7
0.0
PRIVATE OWNER
4
1.38
0.8
15.96
17.2
444.5
119.7
2.34
.95
19.7
5.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
1.26
0.0
9.87
0.0
609.1
0.0
1.94
0.00
14.1
0.0
CNV/NO A.PMP
2
1.80
0.9
26.74
20.7
439.6
56.6
2.93
1. 77
18.2
0.8
A.PMP/NO CNV
1
0.52
0.0
3.35
0.0
326.7
0.0
2.00
0.00
26.6
0.0
NO CNV/NO APMP
1
1.32
0.0
9.26
0.0
442.7
0.0
3.75
0.00
19.2
0.0
*DISPLACEMENT











LESS THAN 151
1
0.52
0.0
3.35
0.0
326.7
0.0
2.00
0.00
26.6
0.0
151 - 250
2
1.80
0.9
26.74
20.7
439.6
56.6
2.93
1.77
18.2
0.8
251 - 350
2
1.29
0.0
9.56
0.4
525.9
117.7
2.84
1.28
16.7
3.6
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.42
1.0
17.99
20.5
389.7
58.6
2.47
1.12
21.5
4.4
3800 - 4799
2
1.22
0.1
10.99
1.6
544.4
91.5
3.06
1.58
15.9
2.5
4800 - 5799
0










ALL VEHICLES
5
1.34
0.7
15.19
15.0
451.6
104.9
2.71
1.16
19.3
4.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-20

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 19 75 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.91
0.0
61.00
0.0
-40.0
0.0 -1.93
0.00 -2.2
0.0
CHRYSLER
0








FORD MOTOR CO.
0








GENERAL MOTORS
3
0.44
0.6
13.85
15.4
29.5
44.8 -1.12
1.27 -1.4
1.9
IMPORTS
1
0.08
0.0
5.15
0.0
25.5
0.0 -0.60
0.00 -2.5
0.0
*M0DEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
1 0 7 L
0
n








17/^
1975
u
5
0.46
0.5
21.54
24.9
14.8
44.1 -1.18
1.02 -1.8
1.4
*VEHICLE TYPE









AUTOMOBILE
3
0.37
0.5
25.52
30.8
-10.0
33.1 -1.04
.77 -1.6
1.3
TRUCK
2
0.60
0.8
15.56
21.3
52.0
31.0 -1.38
1.68 -2.1
2.0
*VEHICLE OWNER









GSA
1
1.18
0.0
30.65
0.0
73.9
0.0 -2.57
0.00 -3.5
0.0
PRIVATE OWNER
4
0.28
0.4
19.26
28.1
-0.0
33.7 -0.83
.76 -1.3
1.2
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
1
0.02
0.0
0.48
0.0
30.1
0.0 -0.19
0.00 -0.7
0.0
CNV/NO A.PMP
2
0.65
0.7
20.53
14.3
29.2
63.3 -1.58
1.40 -1.8
2.5
A.PMP/NO CNV
1
0.08
0.0
5.15
0.0
25.5
0.0 -0.60
0.00 -2.5
0.0
NO CNV/NO APMP
1
0.91
0.0
61.00
0.0
-40.0
0.0 -1.93
0.00 -2.2
0.0
~DISPLACEMENT









LESS THAN 151
1
0.08
0.0
5.15
0.0
25.5
0.0 -0.60
0.00 -2.5
0.0
151 - 250
2
0.65
0.7
20.53
14.3
29.2
63.3 -1.58
1.40 -1.8
2.5
251 - 350
2
0.46
0.6
30.74
42.8
-5.0
49.6 -1.06
1.23 -1.4
1.1
MORE THAN 350
0








~INERTIA WEIGHT









1800 - 2799
0








2800 - 3799
3
0.37
0.5
25.52
30.8
-10.0
33.1 -1.04
.77 -1.6
1.3
3800 - 4799
2
0.60
0.8
15.56
21.3
52.0
31.0 -1.38
1.68 -2.1
2.0
4800 - 5799
0








ALL VEHICLES
5
0.46
0.5
21.54
24.9
14.8
44.1 -1.18
1.02 -1.8
1.4
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-21

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)

OF
HC

CO

C02
NOX MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
~VEHICLE MANUFACTURER







AMER. MOTORS
1
40.8
0.0
86.8
0.0
-9.9
0.0
-106.0
0.0 -12.7
CHRYSLER
0








FORD MOTOR CO.
0








GENERAL MOTORS
3
18.8
27.2
32. 1
35.1
4.7
8.7
-75.0
76.5 -10.1
IMPORTS
1
13.3
0.0
60.6
0.0
7.2
0.0
-42.9
0.0 -10.2
~MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
5
22.1
22.0
48.8
34.9
2.3
9.3
-74.8
58.5 -10.6
*VEHICLE TYPE









AUTOMOBILE
3
19.6
18.8
55.8
33.6
-2.3
8.7
-67.8
33.6 -7.7
TRUCK
2
25.9
34.4
38.2
47.4
9.0
6.1
-85.2
105.2 -15.0
*VEHICLE OWNER









GSA
1
50.2
0.0
71.7
0.0
13.3
0.0
-159.6
0.0 -25.1
PRIVATE OWNER
4
15.1
17.8
43.0
37.5
-0.5
7.9
-53.6
39.6 -7.0
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
1
1.6
0.0
4.6
0.0
4.7
0.0
-10.9
0.0 -4.9
CNV/NO A.PMP
2
27.5
32.2
45.9
36.5
4.6
12.3
-107.1
74.2 -12.6
A.PMP/NO CNV
1
13.3
0.0
60.6
0.0
7.2
0.0
-42.9
0.0 -10.2
NO CNV/NO APMP
1
40.8
0.0
86.8
0.0
-9.9
0.0
-106.0
0.0 -12.7
~DISPLACEMENT









LESS THAN 151
1
13.3
0.0
60. 6
0.0
7.2
0.0
-42.9
0.0 -10.2
151 - 250
2
27.5
32.2
45.9
36.5
4.6
12.3
-107.1
74.2 -12.6
251 - 350
2
21.2
27.8
45.7
58.1
-2.6
10.4
-58.5
67.3 -8.8
MORE THAN 350
0








~INERTIA WEIGHT









1800 - 2799
0








2800 - 3799
3
19.6
18.8
55.8
33.6
-2.3
8.7
-67.8
33.6 -7.7
3800 - 4799
2
25.9
34.4
38.2
47.4
9.0
6.1
-85.2
105.2 -15.0
4800 - 5799
0








ALL VEHICLES
5
22.1
22.0
48.8
34.9
2.3
9.3
-74.8
58.5 -10.6
0.0
7.6
0.0
0.0
0.0
7.6
5.5
6.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-22

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
ii OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS 1 1.32 0.0 9.26 0.0 442.7 0.0 3.75 0.00 19.2 0.0
CHRYSLER	0
FORD MOTOR CO. 0
GENERAL MOTORS 3 1.62 0.7 21.12 17.6 496.1 105.7 2.60 1.38 16.9 2.4
IMPORTS	1 0.52 0.0 3.35 0.0 326.7 0.0 2.00 0.00 26.6 0.0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5 1.34 0.7 15.19 15.0 451.6 104.9 2.71 1.16 19.3 4.6
*VEHICLE TYPE
AUTOMOBILE
TRUCK
3
2
1.42
1.22
1.0
0.1
17.99
10.99
20.5
1.6
389.7
544.4
58.6
91.5
2.47
3.06
1.12
1.58
21.5
15.9
4.4
2.51
*VEHICLE OWNER











GSA
PRIVATE OWNER
1
4
1.17
1.38
0.0
0.8
12.11
15.96
0.0
17.2
479.7
444.5
0.0
119.7
4.18
2.34
0.00
.95
17.7
19.7
0.0
5.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
1
2
1
1
1.26
1.80
0.52
1.32
0.0
0.9
0.0
0.0
9.87
26.74
3.35
9.26
0.0
20.7
0.0
0.0
609.1
439.6
326.7
442.7
0.0
56.6
0.0
0.0
1.94
2.93
2.00
3.75
0.00
1.77
0.00
0.00
14.1
18.2
26.6
19.2
0.0
0.8
0.0
0.0
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
2
2
0
0. 52
1.80
1.29
0.0
0.9
0.0
3.35
26.74
9.56
0.0
20.7
0.4
326.7
439.6
525.9
0.0
56.6
117.7
2.00
2.93
2.84
0.00
1.77
1.28
26.6
18.2
16.7
0.0
0.8
3.6
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
0
3
2
1.42
1.22
1.0
0.1
17.99
10.99
20.5
1.6
389.7
544.4
58.6
91.5
2.47
3.06
1.12
1.58
21.5
15.9
4.4
2.5
4800 - 5799
ALL VEHICLES 5 1.34 0.7 15.19 15.0 451.6 104.9 2.71 1.16 19.3 4.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-23

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.67
o
o
44.62
0.0
-45.4
0.0 -2.47
o
•
o
o
•
0.0
CHRYSLER
0








FORD MOTOR CO.
0








GENERAL MOTORS
3
0.19
0.3
8.13
5.4
17.5
43.4 -1.09
.83 -0.8
1.2
IMPORTS
1
-0.04
0.0
3.05
0.0
15.2
0.0 -0.55
0.00 -1.5
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
5
0.24
0.3
14.41
17.5
4.4
41.5 -1.26
.93 -1.0
0.9
*VEHICLE TYPE









AUTOMOBILE
3
0.33
0.4
20.42
21.6
-20.8
31.9 -1.20
1.10 -0.7
1.0
TRUCK
2
0.11
0.4
5.40
3.8
42.3
7.3 -1.34
1.01 -1.4
0.8
*VEHICLE OWNER









GSA
1
0.37
0.0
8.08
0.0
47.5
0.0 -2.05
0.00 -1.9
0.0
PRIVATE OWNER
4
0.21
0.4
15.99
19.7
-6.3
39.0 -1.06
.94 -0.8
0.8
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
1
-0.15
0.0
2.72
0.0
37.2
0.0 -0.62
0.00 -0.9
0.0
CNV/NO A.PMP
2
0.36
0.0
10.84
3.9
7.6
56.4 -1.32
1.03 -0.8
1.6
A.PMP/NO CNV
1
-0.04
0.0
3.05
0.0
15.2
0.0 -0.55
0.00 -1.5
0.0
NO CNV/NO APMP
1
0.67
0.0
44.62
0.0
-45.4
0.0 -2.47
0.00 -1.1
0.0
*DISPLACEMENT









LESS THAN 151
1
-0.04
0.0
3.05
0.0
15.2
0.0 -0.55
0.00 -1.5
0.0
151 - 250
2
0.36
0.0
10.84
3.9
7.6
56.4 -1.32
1.03 -0.8
1.6
251 - 350
2
0.26
0.6
23.67
29.6
-4.1
58.4 -1.55
1.31 -1.0
0.1
MORE THAN 350
0








*INERTIA WEIGHT









1800 - 2799
0








2800 - 3799
3
0.33
0.4
20.42
21.6
-20.8
31.9 -1.20
1.10 -0.7
1.0
3800 - 4799
2
0.11
0.4
5.40
3.8
42.3
7.3 -1.34
1.01 -1.4
0.8
4800 - 5799
0








ALL VEHICLES
5
0.24
0.3
14.41
17.5
4.4
41.5 -1.26
.93 -1.0
0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-24

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
33.7
AMER. MOTORS	1
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3
IMPORTS	1
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5
*VEHICLE TYPE
7.8
-8.3
0.0 82.8 0.0 -11.4 0.0 -193.0 0.0 -5.8 0.0
19.3 28.8 9.9 2.0 9.5 -65.9 26.5 -5.6 7.2
0.0 47.7 0.0 4.4 0.0 -37.9 0.0 -6.0 0.0
9.8 20.3 43.4 24.5 -0.2 9.2 -85.7 64.0 -5.7 5.1
AUTOMOBILE
3
12.8
21.0
51.7
29.3
-5.3
8.5
-95.2
85.1
-3.2
4.6
TRUCK
2
5.3
26.5
30.8
13.0
7.4
2.3
-71.6
34.8
-9.4
4.1
*VEHICLE OWNER











GSA
1
24.0
0.0
40.0
0.0
9.0
0.0
-96. 2
0.0
-12.3
0.0
PRIVATE OWNER
4
6.2
21.6
44.2
28.2
-2.5
8.9
-83.1
73.5
-4.0
4.1
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
-13.5
0.0
21.6
0.0
5.8
0.0
-47.0
0.0
-6.5
0.0
CNV/NO A.PMP
2
18.5
7.8
32.4
10.8
0.1
12.6
-75.4
29.4
-5.1
10.1
A.PMP/NO CNV
1
-8.3
0.0
47.7
0.0
4.4
0.0
-37.9
0.0
-6.0
0.0
NO CNV/NO APMP
1
33.7
0.0
82.8
0.0
-11.4
0.0
-193.0
0.0
-5.8
0.0
*DISPLACEMENT











LESS THAN 151
1
-8.3
0.0
47.7
0.0
4.4
0.0
-37.9
0.0
-6.0
0.0
151 - 250
2
18.5
7.8
32.4
10.8
0.1
12.6
-75.4
29.4
-5.1
10.1
251 - 350
2
10.1
33.4
52.2
43.3
-2.8
12.2
-120.0
103.2
-6.1
0.5
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
12.8
21.0
51.7
29.3
-5.3
8.5
-95.2
85.1
-3.2
4.6
3800 - 4799
2
5.3
26.5
30.8
13.0
7.4
2.3
-71.6
34.8
-9.4
4.1
4800 - 5799
0










ALL VEHICLES
5
9.8
20.3
43.4
24.5
-0.2
9.2
-85.7
64.0
-5.7
5.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-25

-------
1975 VFHTrT.FS
DATA SET 3
15 VEHICLES
G-26

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
0
1
1
12
1
2.04
0.80
1.75
1.44
0.0
0.0
0.7
0.0
31.86
7.46
52.50
35.99
0.0
0.0
30.4
0.0
644.9
681.5
613.7
330.2
0.0
0.0
67.6
0.0
3.04
0.83
1.23
1.81
0.00
0.00
.44
0.00
12.6
12.8
12.8
22.7
0.0
0.0
1.5
0.0
*MODEL YEAR











1968
1969
1970
1971
1972
1973
1974
1975
0
0
0
0
0
0
0
15
1.68
0.7
47.02
29.8
601.4
97.8
1.36
.64
13.4
2.9
*VEHICLE TYPE











AUTOMOBILE
TRUCK
15
0
1.68
0.7
47.02
29.8
601.4
97.8
1.36
.64
13.4
2.9
*VEHICLE OWNER











GSA
PRIVATE OWNER
0
15
1.68
0.7
47.02
29.8
601.4
97.8
1.36
.64
13.4
2.9
^CONTROL OPTIONS
1 (CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
1.11
1.93
1.44
0.7
0.6
0.0
13.94
61.36
35.99
12.4
24.6
0.0
650.4
608.9
330.2
94.6
51.0
0.0
1.73
1.17
1.81
1.18
.20
0.00
13.3
12.6
22.7
2.0
1.1
0.0
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
0.98
1.90
1.19
0.6
0.6
0.1
24.03
55.03
25.99
16.9
29.3
30.6
427.4
611.3
720.9
137.5
48.1
41.9
1.22
1.30
1.84
.83
.61
.81
19.5
12.7
11.6
4.5
1.0
0.1
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
0.53
1.12
1.92
1.29
0.0
0.5
0.6
0.0
12.07
21.72
54.75
47.60
0.0
20.2
29.8
0.0
524.6
505.8
617.6
691.3
0.0
248.4
61.0
0.0
0.63
1.32
1.45
1.26
0.00
.69
.68
0.00
16.3
17.7
12.6
11.5
0.0
7.0
1.0
0.0
ALL VEHICLES
15
1.68
0.7
47.02
29.8
601.4
97.8
1.36
.64
13.4
2.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-27

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP)
$ OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
1.49
0.0
31.46
0.0
769.1
0.0
2.67
0.00
10.8
0.0
FORD MOTOR CO.
1
0.84
0.0
7.31
0.0
681.1
0.0
2.34
0.00
12.8
0.0
GENERAL MOTORS
12
1.54
0.4
42.68
20.8
628.8
66.5
1.12
.39
12.8
1.3
IMPORTS
1
1.79
0.0
53.57
0.0
340.4
0.0
1.47
0.00
20.6
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
*VEHICLE TYPE











AUTOMOBILE
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
TRUCK
0










*VEHICLE OWNER











GSA "
0










PRIVATE OWNER .
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.37
0.4
14.85
12.3
673.7
108.8
1.91
.89
12.9
2.3
CNV/NO A.PMP
10
1.54
0.4
49.15
15.6
630.1
55.2
1.08
.29
12.5
0.9
A.PMP/NO CNV
1
1.79
0.0
53.57
0.0
340.4
0.0
1.47
0.00
20.6
0.0
NO CNV/NO APMP
0










*DISPLACEMENT











LESS THAN 151
2
1.60
0.3
35.10
26.1
430.0
126.7
1.06
.58
18.4
3.2
151 - 250
0










251 - 350
11
1.50
0.5
45.09
19.6
643.7
67.6
1.29
.64
12.4
1.0
MORE THAN 350
2
1.49
0.4
19.17
21.5
697.8
38.3
1.82
.21
12.1
0.1
*INERTIA WEIGHT











1800 - 2799
1
1.41
0.0
16.63
0.0
519.6
0.0
0.65
0.00
16.1
0.0
2800 - 3799
2
1.31
0.7
30.44
32.7
510.7
240.9
1.90
.62
16.7
5.6
3800 - 4799
11
1.58
0.4
44.78
20.3
647.7
71.2
1.25
.58
12.4
1.0
4800 - 5799
1
1.23
0.0
34.34
0.0
670.7
0.0
1.67
0.00
12.2
0.0
ALL VEHICLES
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-28

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(TUNE-UP/PARA ADJ)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
2.07
0.0
27.58
OiO
706.8
0.0
3.54
0.00
11.7
0.0
FORD MOTOR CO.
1
0.81
0.0
4.15
0.0
630.6
0.0
3.07
0.00
13.9
0.0
GENERAL MOTORS
12
1.45
0.3
32.85
16.8
601.3
83.9
1.48
.60
13.8
2.2
IMPORTS
1
2.04
0.0
58.00
0.0
346.4
0.0
1.23
0.00
20.0
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.49 0.4 32.26 18.1 593.3 104.7 1.70 .85 14.1 2.6
*VEHICLE TYPE
AUTOMOBILE	15 1.49 0.4 32.26 18.1 593.3 104.7 1.70 .85 14.1 2.6
TRUCK	0
AVEHICLE OWNER
GSA	0
PRIVATE OWNER	15 1.49 0.4 32.26 18.1 593.3 104.7 1.70 .85 14.1 2.6
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
4
1.42
0.5
12.26
10.9
626.6
141.3
2.55
1.15
14.3
CNV/NO A.PMP
10
1.46
0.4
37.69
13.6
604.6
54.7
1.41
.49
13.4
A.PMP/NO CNV
1
2.04
0.0
58.00
0.0
346.4
0.0
1.23
0.00
20.0
NO CNV/NO APMP
0









*DISPLACEMENT










LESS THAN 151
2
1.72
0.4
35.26
32.2
386.5
56.7
1.07
.23
19.8
151 - 250
0









251 - 350
11
1.51
0.4
35.44
15.7
616.3
60.4
1.72
.91
13.2
MORE THAN 350
2
1.14
0.4
11.78
9.9
673.4
97.8
2.26
.62
12.8
*INERTIA WEIGHT










1800 - 2799
1
1.41
0.0
12.53
0.0
426.6
0.0
0.91
0.00
19.7
2800 - 3799
2
1.42
0.9
31.07
38.1
488.5
201.0
2.15
1.30
16.9
3800 - 4799
11
1.57
0.3
35.50
15.6
626.5
71.5
1.69
.86
13.0
4800 - 5799
1
0.88
0.0
18.78
0.0
604. 3
0.0
1.82
0.00
13.9
ALL VEHICLES
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
3.8
1.2
0.0
0.2
1.2
1.5
0.0
4.3
1.3
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-29

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
1.49
0.0
31.46
0.0
769.1
0.0
2.67
0.00
10.8
0.0
FORD MOTOR CO.
1
0.84
0.0
7.31
0.0
681.1
0.0
2.34
0.00
12.8
0.0
GENERAL MOTORS
12
1.54
0.4
42.68
20.8
628.8
66.5
1.12
.39
12.8
1.3
IMPORTS
1
1.79
0.0
53.57
0.0
340.4
0.0
1.47
0.00
20.6
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975.	15 1.51 0.4 40.30 21.0 622.4 104.7 1.33 .60 13.2 2.4
*VEHICLE TYPE
AUTOMOBILE	15 1.51 0.4 40.30 21.0 622.4 104.7 1.33 .60 13.2 2.4
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.37
0.4
14.85
12.3
673.7
108.8"
1.91
.89
12.9
2.3
CNV/NO A.PMP
10
1.54
0.4
49.15
15.6
630.1
55.2
1.08
.29
12.5
0.9
A.PMP/NO CNV
1
1.79
0.0
53.57
0.0
340.4
0.0
1.47
0.00
20.6
0.0
NO CNV/NO APMP
0










~DISPLACEMENT











LESS THAN 151
2
1.60
0.3
35.10
26.1
430.0
126.7
1.06
.58
18.4
3.2
151 - 250
0










251 - 350
11
1.50
0.5
45.09
19.6
643.7
67.6
1.29
.64
12.4
1.0
MORE THAN 350
2
1.49
0.4
19.17
21.5
697.8
38.3
1.82
.21
12.1
0.1
~INERTIA WEIGHT











1800 - 2799
1
1.41
0.0
16.63
0.0
519.6
0.0
0.65
0.00
16.1
0.0
2800 - 3799
2
1.31
0.7
30.44
32.7
510.7
240.9
1.90
.62
16.7
5.6
3800 - 4799
11
1.58
0.4
44.78
20.3
647.7
71.2
1.25
.58
12.4
1.0
4800 - 5799
1
1.23
0.0
34.34
0.0
670.7
0.0
1.67
0.00
12.2
0.0
ALL VEHICLES
15
1.51
0.4
40.30
21.0
622.4
104.7
1.33
.60
13.2
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-30

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE---MANU. TUNE-UP)
if OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 0
CHRYSLER
1
0.
55
0.
.0
0.
.40
0.
0
-124.
,2
0.
0
0.
37
0.00
1.9
0.0
FORD MOTOR CO.
1
-0.
04
0.
,0
0.
. 15
0.
0
0.
.4
0.
0
-1.
51
0.00
-0.0
0.0
GENERAL MOTORS
12
0.
20
0.
,6
9.
.83
21.
7
-15.
1
32.
5
0.
11
.26
0.0
0.6
IMPORTS
1
-0.
35
0.
0
-17.
.58
0.
0
-10.
2
0.
0
0.
34
0.00
2.0
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973
1974
1975
0
0
15
0.17
0.5
6.73
20.7
-21.0
40.8
0.04
.49
0.3
0.9
AVEHICLE TYPE











AUTOMOBILE
TRUCK
15
0
0.17
0.5
6.73
20.7
-21.0
40.8
0.04
.49
0.3
0.9
*VEHICLE OWNER











GSA
PRIVATE OWNER
0
15
0.17
0.5
6.73
20.7
-21.0
40.8
0.04
.49
0.3
0.9
*CONTROL OPTIONS
(CONVERTER,AIR PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
-0.26
0.40
-0.35
0.6
0.3
0.0
-0.91
12.21
-17.58
2.4
23.2
0.0
-23.3
-21.2
-10.2
68.2
32.0
0.0
-0.18
0.09
0.34
.91
.26
0.00
0.4
0.1
2.0
1.0
0.7
0.0
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
-0.61
0.40
-0.30
0.4
0.3
0.5
-11.07
9.94
6.83
9.2
22.5
9.1
-2.6
-32.4
23.2
10.7
41.4
3.6
0.16
0.02
0.01
.25
.54
.60
1.1
0.3
-0.5
1.3
0.8
0.2
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
-0.88
-0.20
0.35
0.06
0.0
0.2
0.5
0.0
-4.56
-8.71
9.96
13.26
0.0
12.5
22.5
0.0
5.0
-4.9
-30.1
20.6
0.0
7.5
44.0
0.0
-0.02
-0.58
0.19
-0.41
0.00
1.31
.21
0.00
0.1
1.0
0.2
-0.7
0.0
1.5
0.8
0.0
ALL VEHICLES
15
0.17
0.5
6.73
20.7
-21.0
40.8
0.04
.49
0.3
0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-31

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
Q OF
HC
CO

CO 2
NOX
VEH.
MEAN S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
*VEHICLE MANUFACTURER





AMER. MOTORS 0






CHRYSLER 1
27.0 0.0
1.3
0.0
-19.3
0.0
12.2
FORD MOTOR CO. 1
-5.0 0.0
2.0
0.0
0.1
0.0
-181.9
GENERAL MOTORS 12
-4.1 57.4
10.2
25.3
-2.6
5.3
7.0
IMPORTS 1
-24.3 0.0
-48.8
0.0
-3.1
0.0
18.8
MPG
0.0	14.8	0.0
0.0	-0.1	0.0
20.4	-0.1	5.0
0.0	9.0	0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0-
1974	0
1975	15
*VEHICLE TYPE
AUTOMOBILE	15
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15
-3.5 51.9 5.1 27.1 -3.6 6.4 -4.4 52.4 1.5 6.2
-3.5 51.9 5.1 27.1 -3.6 6.4 -4.4 52.4 1.5 6.2
-3.5 51.9
CNV/A.PMP 4	-51.2
CNV/NO A.PMP 10	17.7
A.PMP/NO CNV 1	-24.3
NO CNV/NO APMP 0
*DISPLACEMENT
15.4
5.1
27.1
-3.6
6.4
-4.4
52.4
1.5
6.2
PUMP)







-6.4
21.2
-3.7
10.5
-38.7
95.9
3.1
8.0
15.1
22.3
-3.6
5.3
6.9
22.0
0.1
5.4
-48.8
0.0
-3.1
0.0
18.8
0.0
9.0
0.0
LESS THAN
151
2
-95.2
100.2
-43.3
7.8
-1.1
2.9
7.8
15.5
5.0
5.7
151 - 250

0










251 - 350

11
17.7
16.0
11.5
21.3
-5.3
6.6
-6.2
60.5
2.0
6.4
MORE THAN
350
2
-27.9
46.1
18.4
13.4
3.2
0.3
-7.1
35.9
-4.5
1.7
*INERTIA WEIGHT
1800 - 2799
1 ¦
-166.0
0.0
-37.8
0.0
1.0
0.0
-3.2
0.0
0.9
2800 - 3799
2
-14.7
13.7
-23.4
36.0
-1.5
2.2
-81.6
141.9
4.5
3800 - 4799
11
12.6
28.1
12.1
21.1
-5.0
6.9
12.0
16.3
1.7
4800 - 5799
1
4.7
0.0
27.9
0.0
3.0
0.0
-32.5
0.0
-5.7
ALL VEHICLES
15
-3.5
51.9
5.1
27.1
-3.6
6.4
-4.4
52.4
1.5
0.0
6.4
6.6
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-32

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
// OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
0










CHRYSLER
1
2.07
0.0
27.58
0.0
706.8
0.0
3.54
0.00
11.7
0.0
FORD MOTOR CO.
1
0.81
0.0
4.15
0.0
630.6
0.0
3.07
0.00
13.9
0.0
GENERAL MOTORS
12
1.45
0.3
32.85
16.8
601.3
83.9
1.48
.60
13.8
2.2
IMPORTS
1
2.04
0.0
.58.00
0.0
346.4
0.0
1.23
0.00
20.0
0.0
*M0DEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
*VEHICLE TYPE











AUTOMOBILE
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
TRUCK
0










*VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
1.49
0.4
32. 26
18.1
593.3
104.7
1.70
.85
14.1
2.6
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.42
0.5
12.26
10.9
626.6
141. 3
2.55
1.15
14.3
3.8
CNV/NO A.PMP
10
1.46
0.4
37.69
13.6
604.6
54.7
1.41
.49
13.4
1.2
A.PMP/NO CNV
1
2.04
0.0
58.00
0.0
346.4
0.0
1.23
0.00
20.0
0.0
NO CNV/NO APMP 0
^DISPLACEMENT
LESS THAN 151
2
1.72
0.4
35.26
32.2
386.5
56.7
1.07
.23
19.8
0.2
151 - 250
0










251 - 350
11
1.51
0.4
35.44
15.7
616.3
60. 4
1.72
.91
13.2
1.2
MORE THAN 350
2
1.14
0.4
11.78
9.9
673.4
97.8
2.26
.62
12.8
1.5
*INERTIA WEIGHT











1800 - 2799
1
1.41
0.0
12.53
0.0
426.6
0.0
0.91
0.00
19.7
0.0
2800 - 3799
2
1.42
0.9
31.07
38.1
488.5
201.0
2.15
1.30
16.9
4.3
3800 - 4799
11
1.57
0.3
35.50
15.6
626.5
71.5
1.69
.86
13.0
1.3
4800 - 5799
1
0.88
0.0
18.78
0.0
604.3
0.0
1.82
0.00
13.9
0.0
ALL VEHICLES
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-33

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
0
1	-0.03
1 -0.01
12 0-29
1 -0.60
0
0
0
0
0
0
0
15
0.0 4.28
0.0 3.31
0.7 19.66
0.0 -22.01
0.0
-61.9
0.0 -0.50
0.00 0.9
0.0
0.0
50.9
0.0 -2.24
0.00 -1.1
0.0
24.6
12.4
46.5 -0.25
.34 -1.0
1.2
0.0
-16.2
0.0 0.58
0.00 2.7
0.0
15
0
0
15
0.19 0.7 14.76 24.7
0.19 0.7 14.76 24.7
0.19 0.7 14.76
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
24.7
8.1 47.3 -0.34 .65 -0.6 1.5
8.1 47.3 -0.34 .65 -0.6 1.5
8.1 47.3 -0.34 .65 -0.6 1.5
4 -0.31
0.4
1.68
2.5
23.7
67.9 -0.83
.95 -0.9
1.9
10 0.47
0.6
23.67
25.2
4.3
41.8 -0.24
.37 -0.8
1.0
1 -0.60
0
0.0
-22.01
0.0
-16.2
0.0 0.58
0.00 2.7
0.0
*DISPLACEMENT
LESS THAN
151
2
0
1
0.2
-11.23
15.2
40.9
80.8 0.15
.61 -0.4
4.3
151 - 250

0








251 - 350

11
0.39
0.6
19.59
25.1
-5.0
38.1 -0.42
.70 -0.5
0.9
MORE THAN
350
2
0.05
0.5
14.21
20.7
47.5
55.9 -0.42
.19 -1.3
1.6
*INERTIA WEIGHT
- 2799
1 -0.88
0.0
-0.46
0.0
98.0
0.0 -0.28
0.00 -3.4
0.0
- 3799
2 -0.31
0.4
-9.35
17.9
17.3
47.4 -0.83
1.99 0.8
2.7
- 4799
11 0.36
0.6
19.25
25.3
-8.9
33.7 -0.24
.35 -0.4
0.9
- 5799
1 0.41
0.0
28.82
0.0
87.0
0.0 -0.56
0.00 -2.4
0.0
ALL VEHICLES
15 0.19 0.7 14.76 24.7
8.1 47.3 -0.34 .65 -0.6 1.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-34

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND./OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 0
CHRYSLER
1
-1.5
0.0
13.4
0.0
-9.6
0.0
-16.4
0.0
7.3
0.0
FORD MOTOR CO.
1
-1.2
0.0
44.4
0.0
7.5
0.0
-269.9
0.0
-8.7
0.0
GENERAL MOTORS
12
-3.1
63.4
26.6
29.5
2.1
7.9
-21.0
26.8
-7.4
8.9
IMPORTS
1
-41.7
0.0
-61.2
0.0
-4.9
0.0
32.0
0.0
11.9
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15
*VEHICLE TYPE
AUTOMOBILE	15
TRUCK.	0
~VEHICLE OWNER
-5.4 57.1 21.0 35.2
-5.4 57.1 21.0 35.2
1.2 8.0 -33.8 70.8 -5.2 9.9
1.2 8.0 -33.8 70.8 -5.2 9.9
GSA	0
PRIVATE OWNER 15
-5.4 57.1 21.0 35.2
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 -49.5 78.8 11.2 24.1
CNV/NO A.PMP 10 15.8 38.6 33.2 27.8
1.2 8.0 -33.8 70.8 -5.2 9.9
4.4 .11.8 -85. 7 123.6 -5.8 12.0
0.6 6.5 -19.6 28.4 -6.7
A.PMP/NO CNV
NO CNV/NO APMP
1
0
-41.7
0.0
-61.2
0.0
-4.9
0.0
32.0
0.0
11.9
~DISPLACEMENT










LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
-103.9
11.3
1.2
87.9"
36.8
43.2
-32.5
29.9
25.7
40.5
25.7
49.3
6.9
-0.8
6.8
16.7
6.1
8.1
-6.2
-39.8
-28.2
54. 1
80.5
22.9
-4.5
-4.3
-10.9
~INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
-166.0
-21.5
8.7
31.8
0.0
28.6
38.7
0.0
-3.8
-8.4
25.1
60.5
0.0
74.6
27.7
0.0
18.7
1.3
-1.4
12.6
0.0
8.8
5.5
0.0
-44.4
-118.9
-16.3
-44.4
0.0
213.5
25.7
0.0
-20.9
1.6
-3.6
-21.0
ALL VEHICLES
15
-5.4
57.1
21.0
35.2
1.2
8.0
-33.8
70.8
-5.2
8.4
0.0
23.2
7.5
0.0
L4.5
7.5
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-35

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
8 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
0










CHRYSLER
1
1.69
0.0
24.69
0.0
583.4
0.0
2.82
0.00
14.1
0.0
FORD MOTOR CO.
1
0.79
0.0
3.39
0.0
596.1
0.0
3.98
0.00
14.7
0.0
GENERAL MOTORS
12
0.92
0.4
21.81
13.6
609.1
82.3
1.69
.30
14.0
2.5
IMPORTS
1
1.04
0.0
21.34
0.0
348.4
0.0
1.96
0.00
23.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
3.2
*VEHICLE TYPE











AUTOMOBILE
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
3.2
TRUCK
0










*VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
3.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.02
0.6
9.59
10.4
576.1
134.4
2.67
1.00
15.6
4.0
CNV/NO A.PMP
10
0.94
0.4
25.15
12.3
618.5
41.9
1.65
.27
13.5
0.9
A.PMP/NO CNV
1
1.04
0.0
21.34
0.0
348.4
0.0
1.96
0.00
23.0
0.0
NO CNV/NO APMP
0










~DISPLACEMENT











LESS THAN 151
2
1.17
0.2
14.81
9.2
373.7
35.8
1.80
.23
22.2
1.2
151 - 250
0










251 - 350
11
1.01
0.4
23.64
13.3
612.8
41.4
1.96
.80
13.6
0.9
MORE THAN 350
2
0.56
0.4
10.78
12.4
674.6
72.4
1.98
.35
12.8
1.0
*INERTLA WEIGHT











1800 - 2799
1
1.30
0.0
8.28
0.0
399.1
0.0
1.64
0.00
21.3
0.0
2800 - 3799
2
0.91
0.2
12.36
12.7
472.2
175.2
2.97
1.43
18.9
5.9
3800 - 4799
11
0.96
0.5
23.51
13.5
624.6
53.0
1.80
.46
13.4
0.9
4800 - 5799
1
0.83
0.0
19.58
0.0
623.4
0.0
1.74
0.00
13.5
0.0
ALL VEHICLES
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
3.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-36

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0








CHRYSLER
1
0.35
0.0
7.17
0.0
61.5
0.0 0.22
0.00 -1.5
0.0
FORD MOTOR CO.
1
0.01
0.0
4.07
0.0
85.4
0.0 -3.15
0.00 -1.9
0.0
GENERAL MOTORS
12
0.83
0.7
30.69
24.8
4.6
58.2 -0.46
.34 -1.2
1.4
IMPORTS
1
0.40
0.0
14.65
0.0
-18.2
0.0 -0.15
0.00 -0.4
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 0.71 0.7 26.28 23.9 12.2 57.7 -0.58 .80 -1.2 1.3
*VEHICLE TYPE
AUTOMOBILE	15 0.71 0.7 26.28 23.9 12.2 57.7 -0.58 .80 -1.2 1.3
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 0.71 0.7 26.28 23.9 12.2 57.7 -0.58 .80 -1.2 1.3
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 0.10 0.7 4.36 2.0 74.3 42.3 -0.94 1.58 -2.2 2.0
CNV/NO A.PMP	10 0.99 0.6 36.21 23.4 -9.5 47.4 -0.47 .26 -0.9 0.9
4
0.10
0.7
4.36
2.0
74.3
42.3 -0.94
1.58 -2.2
10
0.99
0.6
36.21
23.4
-9.5
47.4 -0.47
.26 -0.9
1
0
0.40
0.0
14.65
0.0
-18.2
0.0 -0.15
0.00 -0.4
A.PMP/NO CNV	1 0.40 0.0 14.65 0.0 -18.2 0.0 -0.15 0.00 -0.4 0.0
NO CNV/NO APMP
*DISPLACEMENT
LESS THAN 151	2 -0.19 0.8 9.22 7.7 53.7 101.6 -0.58 .61 -2.7 3.3
151 - 250	0
251 - 350	11 0.89 0.6 31.39 25.5 -1.5 52.5 -0.65 .89 -1.0 0.8
MORE THAN 350	2 0.63 0.2 15.21 18.1 46.4 30.5 -0.15 .47 -1.2 1.1
*INERTIA WEIGHT
1800 - 2799
1
-0.77
0.0
3.79
0.0
125.5
0.0 -1.01
0.00 -5.1
2800 - 3799
2
0.20
0.3
9.36
7.5
33.6
73.3 -1.65
2.12 -1.1
3800 - 4799
11
0.96
0.6
31.24
25.7
-7.0
45.1 -0.35
.37 -0.8
4800 - 5799
1
0.46
0.0
28.02
0.0
67.9
0.0 -0.48
0.00 -2.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
0.0
1.1
0.8
0.0
ALL VEHICLES 15 0.71 0.7 26.28 23.9 12.2 57.7 -0.58 .80 -1.2 1.3
G-37

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
{1975 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0








CHRYSLER
1
17.2
0.0
22.5
0.0
9.5
0.0
7.2
0.0 -11.8
FORD MOTOR CO.
1
1.2
0.0
54.6
0.0
12.5
0.0
-379.5
0.0 -15.2
GENERAL MOTORS
12
33.7
60.0
54.4
18.9
0.6
10.3
-48.8
46.5 -9.3
IMPORTS
1
27.8
0.0
40.7
0.0
-5.5
0.0
-8.3
0.0 -1.6
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
15
30.1
53.9
51.3
18.9
1.6
10.1
-64.4
97.9 -9.4
*VEHICLE TYPE









AUTOMOBILE
15
30.1
53.9
51.3
18.9
1.6
10.1
-64.4
97.9 -9.4
TRUCK
0








*VEHICLE OWNER









GSA
0








PRIVATE OWNER
15
30.1
53.9
51.3
18.9
1.6
10.1
-64.4
97.9 -9.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
4
-13.4
93.2
40.8
16.4
12.3
8.6
-131.3
183.4 -15.6
CNV/NO A.PMP
10
47.7
21.0
56.6
19.3
-1.9
7.9
-43.2
29.6 -7.6
A.PMP/NO CNV
1
27.8
0.0
40.7
0.0
-5.5
0.0
-8.3
0.0 -1.6
NO CNV/NO APMP
0








~DISPLACEMENT









0.0
0.0
9.7
0.0
LESS THAN 151	2
151 - 250	0
251 - 350	11
MORE THAN 350	2
*INERTIA WEIGHT
-58.8 122.4 36.1 6.6
41.8
54.5
25.6
26.7
53.1
56.8
21.0
3.0
9.2 20.8 -84.3 107.5 -16.3 20.8
-0.7 8.6 -69.7 107.6 -7.8 6.9
6.6 4.6 -15.3 32.2 -10.8 9.2
1800 - 2799
1
-145.3
0.0
31.4
0.0
23.9
0.0 -160.3
0.0 -31.0
2800 - 3799
2
14.5
18.8
47.6
9.8
3.5
12.8 -193.9
262.5 -8.4
3800 - 4799
11
48.3
23.3
53.2
21.0
-1.5
7.6 -34.5
34.8 -6.8
4800 - 5799
1
35.7
0.0
58.9
0.0
9.8
0.0 -38.1
0.0 -17.3
ALL VEHICLES 15 30.1 53.9 51.3 18.9
1.6 10.1 -64.4 97.9 -9.4 9.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-38

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)
it OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
0










CHRYSLER
1
2.07
0.0
27.58
0.0
706.8
0.0
3.54
0.00
11.7
0.0
FORD MOTOR CO.
1
0.81
0.0
4.15
0.0
630.6
0.0
3.07
0.00
13.9
0.0
GENERAL MOTORS
12
1.45
0.3
32.85
16.8
601.3
83.9
1.48
.60
13.8
2.2
IMPORTS
1
2.04
0.0
58.00
0.0
346.4
0.0
1.23
0.00
20.0
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
*VEHICLE TYPE











AUTOMOBILE
15
1.49
0.4
32.26
18.1
593.3
104. 7
1.70
.85
14.1
2.6
TRUCK
0










*VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
*CONTROL OPT IONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.42
0.5
12.26
10.9
626.6
141.3
2.55
1.15
14.3
3.8
CNV/NO A.PHP
10
1.46
0.4
37.69
13.6
604.6
54.7
1.41
.49
13.4
1.2
A.PMP/NO CNV
1
2.04
0.0
58.00
0.0
346.4
0.0
1.23
0.00
20.0
0.0
NO CNV/NO APMP
0










*DISPLACEMENT











LESS THAN 151
2
1.72
0.4
35.26
32.2
386.5
56.7
1.07
.23
19.8
0.2
151 - 250
0









251 - 350
11
1.51
0.4
35.44
15.7
616.3
60.4
1.72
.91
13.2
1.2
MORE THAN 350
2
1.14
0.4
11.78
9.9
673.4
97.8
2.26
.62
12.8
1.5
*INERTIA WEIGHT











1800 - 2799
1
1.41
0.0
12.53
0.0
426.6
0.0
0.91
0.00
19.7
0.0
2800 - 3799
2
1.42
0.9
31.07
38.1
488.5
201.0
2.15
1.30
16.9
4.3
3800 - 4799
11
1.57
0.3
35.50
15.6
626.5
71.5
1.69
.86
13.0
1.3
4800 - 5799
1
0.88
0.0
18.78
0.0
604.3
0.0
1.82
0.00
13.9
0.0
ALL VEHICLES
15
1.49
0.4
32.26
18.1
593.3
104.7
1.70
.85
14.1
2.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-39

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)

§ OF
HC

CO

CO 2 NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.D.
MEAN S.D.
~VEHICLE MANUFACTURER






AMER. MOTORS
0







CHRYSLER
1
-0.58
0.0
3.88
0.0
62.3
0.0 -0.87 0.00
-0.9 0.0
FORD MOTOR CO.
1
0.03
0.0
3. 16
0.0
50.5
0.0 -0.73 0.00
-1.1 0.0
GENERAL MOTORS
12
0.09
0.4
9.83
15.4
27.5
28.8 -0.36 .33
-1.0 1.1
IMPORTS
1
-0.25
0.0
-4.43
0.0
-6.0
0.0 0.24 0.00
0.6 0.0
~MODEL YEAR








1968
0







1969
0







1970
0







1971
0







1972
0







1973
0







1974
0







1975
15
0.02
0.4
8.04
14.2
29.1
29.2 -0.38 .37
o
0
1
*VEHICLE TYPE
AUTOMOBILE
TRUCK
15
0
0.02 0.A 8.04 14.2 29.1 29.2 -0.38 .37 -0.9 1.0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER 15
0.02 0.4 8.04 14.2 29.1 29.2 -0.38 .37 -0.9 1.0
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4	-0.05
10	0.07
1	-0.25
0
0.4
0.5
0.0
2.59
11.47
-4.43
2.3 47.0 46.7 -0.65 .27 -1.3 1.6
16.4 25.5 17.6 -0.33 .34 -0.9 0.7
0.0 -6.0 0.0 0.24 0.00 0.6 0.0
~DISPLACEMENT
LESS THAN
151
2 -0.13
0.2
-0.16
6.0
43.5
*
o
«
0
1
o
o
.35 -1.5
3.0
151 - 250

0







251 - 350

11 -0.02
0.5
9.65
15.8
27.4
17.4 -0.43
.36 -0.8
0.6
MORE THAN
350
2 0.34
0.0
7.38
11.6
24.3
59.5 -0.44
.41 -0.7
1.4
~INERTIA WEIGHT
1800 - 2799
1
0.00
0.0
4.10
0.0
93.0
0.0 -0.26
0.00 -3.6
2800 - 3799
2
-o.ll
0.2
-0.63
5.4
22.2
40.0 -0.24
.69 -0.2
3800 - 4799
11
0.01
0.5
9.29
16.0
21.2
20.3 -0.43
.36 -0.7
4800 - 5799
1
0.35
0.0
15.56
0.0
66.4
0.0 -0.15
0.00 -1.8
0.0
1.2
0.6
0.0
ALL VEHICLES
15 0.02 0.4 8.04 14.2 29.1 29.2 -0.38 .37 -0.9 1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-40

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)
f OF HC
CO

C02
NOX

MPG

VEH. MEAN S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
•D. MEAN S.
D.
*VEHICLE MANUFACTURER








AMER. MOTORS 0








CHRYSLER 1 -38.9 0.0
12.3
0.0
8.1
0.0
-32.6
0.0
-8.8
0.0
FORD MOTOR CO. 1 3.6 0.0
43.2
0.0
7.4
0.0
-31.2
0.0
-8.6
0.0
GENERAL MOTORS 12 0.7 30.6
17.6
26.0
4.6
5.2
-32.2
26.1
-7.3
7.1
IMPORTS 1 -14.0 0-0
-8.3
0.0
-1.8
0.0
16.3
0.0
3.1
0.0
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
0
0
0
0
0
0
0
15
-2.8 29.1 17.2 25.0 4.6 5.0 -28.9 26.3 -6.8 6.9
*VEHICLE TYPE
AUTOMOBILE
TRUCK
15
0
-2.8
29.1
17.2
25.0
4.6
5.0
-28.9
26.3
-6.8
6.9
*VEHICLE OWNER











GSA
PRIVATE OWNER
0
15
-2.8
29.1
17.2
25.0
4.6
5.0
-28.9
26.3
-6.8
6.9
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
-4.0
-1.1
-14.0
24.8
33.1
0.0
15.1
20.6
-8.3
26.5
25.6
0.0
7.7
4.0
-1.8
8.3
2.6
0.0
-35.2
-30.9
16.3
4.1
28.7
0.0
-9.3
-6.8
3.1
10.0
5.2
0.0
*DISP LACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
-7.0
-6.8
23.9
9.9
31.8
6.4
8.2
19.7
12.8
23.3
24.2
46.0
8.1
4.2
3.7
13.9
2.4
8.7
-11.8
-33.1
-23.0
39.8
26.2
19.9
-9.5
-6.5
-6.0
17.8
4.4
11.9
*INERTIA WEIGHT
1800 - 2799
1
0.0
0.0
24.7
0.0
17.9
0.0
-40.0
0.0
-22.1
2800 - 3799
2
-5.2
12.4
17.5
36.4
2.8
6.5
-7.4
33.6
-2.8
3800 - 4799
11
-5.4
32.6
13.9
25.5
3.3
2.8
-33.6
26.2
-5.5
4800 - 5799
1
28.5
0.0
45.3
0.0
9.9
0.0
-9.0
0.0
-14.4
ALL VEHICLES
15
-2.8
29.1
17.2
25.0
4.6
5.0
-28.9
26.3
-6.8
0.0
8.3
5.1
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-41

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
it OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0









CHRYSLER
1
1.69
0.0
24.69
0.0
583.4
0.0
2.82
0-00
14.1
FORD MOTOR CO.
1
0.79
0.0
3.39
0.0
596.1
0.0
3.98
0.00
14.7
GENERAL MOTORS
12
0.92
0.4
21.81
13.6
609.1
82.3
1.69
.30
14.0
IMPORTS
1
1.04
0.0
21.34
0.0
348.4
0.0
1.96
0.00
23.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1973
1974
1975
0
0
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
*VEHICLE TYPE










AUTOMOBILE
TRUCK
15
0
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
*VEHICLE OWNER










GSA
PRIVATE OWNER
0
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
1.02
0.94
1.04
0.6
0.4
0.0
9.59
25.15
21.34
10.4
12.3
0.0
576.1
618.5
348.4
134.4
41.9
0.0
2.67
1.65
1.96
1.00
.27
0.00
15.6
13.5
23.0
~DISPLACEMENT










LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
1.17
1.01
0.56
0.2
0.4
0.4
14.81
23.64
10.78
9.2
13.3
12.4
373.7
612.8
674.6
35.8
41.4
72.4
1.80
1.96
1.98
.23
.80
.35
22.2
13.6
12.8
~INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
1.30
0.91
0.96
0.83
0.0
0.2
0.5
0.0
8.28
12.36
23.51
19.58
0.0
12.7
13.5
0.0
399.1
472.2
624.6
623.4
0.0
175.2
53.0
0.0
1.64
2.97
1.80
1.74
0.00
1.43
.46
0.00
21.3
18.9
13.4
13.5
ALL VEHICLES
15
0.97
0.4
20.75
13.0
589.2
99.0
1.94
.69
14.7
0.0
0.0
2.5
0.0
3.2
4.0
0.9
0.0
1.2
0.9
1.0
0.0
5.9
0.9
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-42

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
0








CHRYSLER
1
-0.20
0.0
6.77
0.0
185.7
0.0 -0.15
0.00 -3.4
0.0
FORD MOTOR CO.
1
0.05
0.0
3.92
0.0
85.0
0.0 -1.64
0-00 -1.9
0.0
GENERAL MOTORS
12
0.62
0.6
20.86
14.3
19.7
48.3 -0.58
.34 -1.2
1.4
IMPORTS
1
0.75
0.0
32.23
0.0
-8.0
0.0 -0.49
0.00 -2.4
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
15
0.54
0.6
19.55
14.2
33.3
62.9 -0.61
.43 -1.5
1.4
*VEHICLE TYPE









AUTOMOBILE
15
0.54
0.6
19.55
14.2
33.3
62.9 -0.61
.43 -1.5
1.4
TRUCK
0








*VEHICLE OWNER









GSA
0








PRIVATE OWNER
15
0.54
0.6
19.55
14.2
33.3
62.9 -0.61
.43 -1.5
1.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
4
0.35
0.7
5.26
2.8
97.6
77.8 -0.76
.70 -2.6
2.2
CNV/NO A.PMP
10
0.59
0.5
24.00
13.4
11.7
40.0 -0.57
.33 -1.0
0.8
A.PMP/NO CNV
1
0.75
0.0
32.23
0.0
-8.0
0.0 -0.49
0.00 -2.4
0.0
NO CNV/NO APMP
0








*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
0.43
0.49
0.93
0.5
0.6
0.7
20.29
21.45
8.38
16.9
14.7
9.0
56.3
30.9
23.2
90.9 -0.74
66.9 -0.67
34.1 -0.16
.35 -3.8
.44 -1.2
.13 -0.7
2.0
1.0
0.9
*INERTIA WEIGHT









1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
0.11
0.40
0.62
0.40
0.0
0.5
0.6
0.0
8.35
18.07
21.28
14.76
0.0
20.0
15.0
0.0
120.5
38.5
23.1
47.3
0.0 -0.99
65.8	-1.06
64.9	-0.55
0.0 -0.07
0.00 -5.2
.81 -2.2
.32 -1.1
0.00 -1.3
0.0
0.3
1.1
0.0
ALL VEHICLES
15
0.54
0.6
19.55
14.2
33.3
62.9 -0.61
.43 -1.5
1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-43

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
0








CHRYSLER
1
-13.4
0.0
21.5
0.0
24. 1
0.0
-5.6
0.0 -31.2
FORD MOTOR CO.
1
6.0
0.0
53.6
0.0
12.5
0.0
-70.1
0.0 -15.1
GENERAL MOTORS
12
37.0
28.4
48.2
17.6
3.2
8.6
-64.1
49.0 -9.3
LM PORTS
1
41.9
0.0
60.2
0.0
-2.4
0.0
-33.3
0.0 -11.7
~MODEL YEAR.









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
15
31.9
29.3
47.6
17.5
4.8
9.7
-58.6
46.6 -11.3
*VEHICLE TYPE









AUTOMOBILE
15
31.9
29.3
47.6
17.5
4.8
9.7
-58.6
46.6 -11.3
TRUCK
0








*VEHICLE OWNER









GSA
0








PRIVATE OWNER
15
31.9
29.3
47.6
17.5
4.8
9.7
-58.6
46.6 -11.3
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
4
20.9
42.8
43.9
15.0
14.9
11.3
-60.3
67.7 -19.9
CNV/NO A.PMP
10
35.3
25.4
47.8
19.4
1.5
6.4
-60.4
42.0 -7.9
A.PMP/NO CNV
1
41.9
0.0
60.2
0.0
-2.4
0.0
-33.3
0.0 -11.7
NO CNV/NO APMP
0








~DISPLACEMENT









LESS THAN 151
2
24.9
24.1
55.2
7.0
10.4
18.1
-92.8
84.1 -22.0
151 - 250
0








251 - 350
11
28.5
29.2
46.4
20. 1
4.1
9.5
-61.4
39.8 -10.4
MORE THAN 350
2
58.0
36.0
46.6
5.1
3.5
5.1
-8.7
6.4 -5.9
~INERTIA WEIGHT








1800 - 2799
1
7.8
0.0
50.2
0.0
23.2
0.0 ¦
-152.3
0.0 -32.2
2800 - 3799
2
23.9
25.4
56.9
4.6
5.1
10.5
-51.7
26.0 -13.4
3800 - 4799
11
35.5
32.4
46.1
20.1
2.9
9.1
-56.2
42.1 -9.1
4800 - 5799
1
32.5
0.0
43.0
0.0
7.1
0.0
-4.2
0.0 -10.9
ALL VEHICLES
15
31.9
29.3
47.6
17.5
4.8
9.7
-58.6
46.6 -11.3


AUTOMOTIVE
TESTING LABORATORIES,INC


0.0
0.0
9.3
0.0
6.1
0.0
9.2
7.1
0.0
2.4
9.5
0.0
19900 E. COLFAX, AURORA, COLO. 80011
G-44

-------
0
1
1.69
0.0
24.69
0.0
583.4
0.0
2.82
0.00
14.1
0.0
1
0.79
0.0
3.39
0.0
596.1
0.0
3.98
0.00
14.7
0.0
12
0.92
0.4
21.81
13.6
609.1
82.3
1.69
.30
14.0
2.5
1
1.04
0.0
21.34
0.0
348.4
0.0
1.96
0.00
23.0
0.0
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(TUNE-UP/PARA ADJ--TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 0.97 0.4 20.75 13.0 589.2 99.0 1.94 .69 14.7 3.2
*VEHICLE TYPE
AUTOMOBILE	15 0.97 0.4 20.75 13.0 589.2 99.0 1.94 .69 14.7 3.2
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER 15 0.97 0.4 20.75 13.0 589.2 99.0 1.94 .69 14.7 3.2
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
4
1.02
0.6
9.59
10.4
576.1
134.4
2.67
1.00
15.6
CNV/NO A.PMP
10
0.94
0.4
25. 15
12.3
618.5
41.9
1.65
.27
13.5
A.PMP/NO CNV
1
1.04
0.0
21.34
0.0
348.4
0.0
1.96
0.00
23.0
NO CNV/NO APMP
0









^DISPLACEMENT










LESS THAN 151
2
1.17
0. 2
14.81
9.2
373.7
35.8
1.80
.23
22.2
151 - 250
0









251 - 350
11
1.01
0.4
23.64
13.3
612.8
41.4
1.96
.80
13.6
MORE THAN 350
2
0.56
0.4
10. 78
12.4
674.6
72.4
1.98
.35
12.8
*INERTIA WEIGHT










1800 - 2799
1
1.30
0.0
8.28
0.0
399.1
0.0
1.64
0.00
21.3
2800 - 3799
2
0.91
0.2
12.36
12.7
472.2
175.2
2.97
1.43
18.9
3800 - 4799
11
0.96
0.5
23.51
13.5
624.6
53.0
1.80
.46
13.4
4800 - 5799
1
0.83
0.0
19.58
0.0
623.4
0.0
1.74
0.00
13.5
4.0
0.9
0.0
1.2
0.9
1.0
0.0
5.9
0.9
0.0
ALL VEHICLES 15 0.97 0.4 20.75 13.0 589.2 99.0 1.94 .69 14.7 3.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-45

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(TUNE-UP/PARA ADJ—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
0








CHRYSLER
1
0.38
0.0
2.89
0.0
123.4
0.0 0.72
0.00 -2.4
0.0
FORD MOTOR CO.
1
0.02
0.0
0.76
0.0
34.5
0.0 -0.91
0.00 -0.8
0.0
GENERAL MOTORS
12
0.53
0.4
11.03
12.1
-7.8
36.8 -0.22
.42 -0.3
0.9
IMPORTS
1
1.00
0.0
36.66
0.0
-2.0
0.0 -0.73
0.00 -3.0
0.0
~MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
15
0.52
0.4
11.51
13.2
4.1
47.7 -0.23
.50 -0.6
1.2
*VEHICLE TYPE









AUTOMOBILE
15
0.52
0.4
11.51
13.2
4.1
47.7 -0-23
.50 -0.6
1.2
TRUCK
0








*VEHICLE OWNER









GSA
0








PRIVATE OWNER
15
0. 52
0.4
11.51
13.2
4.1
47.7 -0.23
.50 -0.6
1.2
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
4
0.41
0.5
2.67
1.4
50.6
49.1 -0.11
.83 -1.3
0.9
CNV/NO A.PMP
10
0.52
0.4
12.54
12.8
-13.8
37.5 -0.23
.36 -0.1
0.9
A.PMP/NO CNV
1
1.00
0.0
36.66
0.0
-2.0
0.0 -0.73
0.00 -3.0
0.0
NO CNV/NO APMP
0








~DISPLACEMENT









LESS THAN 151
2
0.55
0.6
20.46
22.9
12.7
20.9 -0.73
o
0
1
N)
U>
1.0
151 - 250
0








251 - 350
11
0.50
0.4
11.80
12.3
3.5
55.2 -0.24
.50 -0.4
1.1
MORE THAN 350
2
0.58
0.8
1.00
2.5
-1.1
25.4 0.28
.28 0.0
0.6
~INERTIA WEIGHT









1800 - 2799
1
0.11
0.0
4.25
0.0
27.5
0.0 -0.73
0.00 -1.6
0.0
2800 - 3799
2
0.51
0.7
18.71
25.4
16.2
25.8 -0.82
.13 -1.9
1.6
3800 - 4799
11
0.60
0.4
11.99
12.1
1.9
54.5 -0.11
.48 -0.4
1.1
4800 - 5799
1
0.05
0.0
-0.80
. 0.0
-19.1
0.0 0.08
0.00 0.4
0.0
ALL VEHICLES
15
0.52
0.4
11.51
13.2
4.1
47.7 -0.23
.50 -0.6
1.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-46

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(TUNE-UP/PARA ADJ—TUNEUP/PARADJ/DEV)
// OF
HC
CO

C02
NOX
MPG

VEH.
MEAN S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S
.D. MEAN S.
D.
*VEHICLE MANUFACTURER







AMER. MOTORS 0








CHRYSLER 1
18.4 0.0
10.5
0.0
17.5
0.0
20.3
0.0 -20.5
0.0
FORD MOTOR CO. 1
2.5 0.0
18.3
0.0
5.5
0.0
-29.6
0.0 -6.0
0.0
GENERAL MOTORS 12
35.8 25.5
32.9
25.6
-1.5
6.3
-25.9
37.0 -1.9
6.6
IMPORTS 1
49.0 0.0
63.2
0.0
-0.6
0.0
-59.3
0.0 -15.3
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15
*VEHICLE TYPE
AUTOMOBILE	15
TRUCK	0
*VEHICLE OWNER
33.3 24.9 32.4 25.2
33.3 24.9 32.4 25.2
0.3 7.6 -25.3 36.2 -4.3 8.1
0.3 7.6 -25.3 36.2 -4.3 8.1
GSA	0
PRIVATE OWNER 15
33.3 24.9 32.4 25.2
0.3 7.6 -25.3 36.2 -4.3 8.1
"CONTROL OPTIONS(CONVERTER,AIR	PUMP)
CNV/A.PMP 4 27.0 35.6	30.3 21.2 7.9 6.6 -18.0
CNV/NO A.PMP 10 34.3 22.3	30.2 26.9 -2.6 6.3 -24.8
A.PMP/NO CNV 1 49.0 0.0	63.2 0.0 -0.6 0.0 -59.3
NO CNV/NO APMP 0
*DISPLACEMENT
47.4 -9.6 7.6
33.8 -1.2 6.9
0.0 -15.3 0.0
LESS THAN 151
2
28.4
29.1
48.6
20.7
2.9
5.0
-69.8
14.8
-11.8
4.9
151 - 250
0










251 - 350
11
32.5
22.1
30.5
24.2
-0.0
8.6
-2 3.8
33.8
-3.7
8.6
MORE THAN 350
2
42.6
52.1
27.1
44. 3
-0.4
3.8
10.9
9.2
-0.2
4.6
*INERTIA WEIGHT











1800 - 2799
1
7.8
0.0
33.9
0.0
6.4
0.0
-80.2
0.0
-8.3
0.0
2800 - 3799
2
25.7
32.9
40.8
31.7
2.4
4.3
-44.5
21.0
-10.6
6.6
3800 - 4799
11
39.5
23.7
34.1
25.2
-0.3
8.5
-19.5
35.9
-3.5
8.5
4800 - 5799
1
5.7
0.0
-4.3
0.0
-3.2
0.0
4.4
0.0
3.1
0.0
ALL VEHICLES
15
33.3
24.9
32.4
25.2
0.3
7.6
-25.3
36.2
-4.3
8.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-47

-------
1975 VEHICLES
DATA SET 4
20 VEHICLES
G-48

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE)
0 OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
2.23
0.0
70.26
0.0
402.7
0.0
1.82
0.00
17.1
0.0
CHRYSLER
1
2.04
0.0
31.86
0.0
644.9
0.0
3.04
0.00
12.6
0.0
FORD MOTOR CO.
1
0.80
0.0
7.46
0.0
681.5
0.0
0.83
0.00
12.8
0.0
GENERAL MOTORS
15
1.81
0.7
49.00
29.1
596.1
85.6
1.28
.43
13.3
2.0
IMPORTS
2
1.02
0.6
22.24
19.4
341.2
15.6
1.60
.29
23.4
1.0
~MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
1.71
0.7
44.45
28.8
567.6
117.8
1.40
.57
14.5
3.6
*VEHICLE TYPE











AUTOMOBILE
18
1.70
0.7
46.44
29.2
564.4
123.3
1.37
.59
14.5
3.8
TRUCK
2
1.81
0.8
26.55
22.9
596.4
60.5
1.68
.10
13.8
0.5
*VEHICLE OWNER











GSA
1
2.35
0.0
42.76
0.0
553.6
0.0
1.61
0.00
14.1
0.0
PRIVATE OWNER
19
1.68
0.7
44.54
29.6
568.4
121.0
1.39
.58
14.5
3.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.15
0.6
13.23
10.8
648.2
82.1
1.73
1.02
13.4
1.8
CNV/NO A.PMP
12
2.02
0.6
59.01
23.0
585.6
80. 1
1.20
.22
13.2
2.1
A.PMP/NO CNV
2
1.02
0.6
22.24
19.4
341.2
15.6
1.60
.29
23.4
1.0
NO CNV/NO APMP
1
2.23
0.0
70.26
0.0
402.7
0.0
1.82
0.00
17.1
0.0
~DISPLACEMENT











LESS THAN 151
3
0.86
0.5
18.85
14.9
402. 3
106.5
1.28
.60
21.0
4.2
151 - 250
2
2.44
0.1
47.27
6.4
468.8
119.9
1.34
.37
16.4
3.3
251 - 350
13
1.88
0.6
52.76
29.9
597.4
73.5
1.38
.59
13.1
1.5
MORE THAN 350
2
1.19
0.1
25.99
30.6
720.9
41.9
1.84
.81
11.6
0.1
~INERTIA WEIGHT











1800 - 2799
1
0.53
0.0
12.07
0.0
524.6
0.0
0.63
0.00
16.3
0.0
2800 - 3799
5
1.52
0.9
34.80
27.3
430.1
143.3
1.39
.44
19.1
4.5
3800 - 4799
13
1.91
0.6
50.41
29.9
614.3
58.9
1.48
.62
12.8
1.1
4800 - 5799
1
1.29
0.0
47.60
0.0
691.3
0.0
1.26
0.00
11.5
0.0
ALL VEHICLES
20
1.71
0.7
44.45
28.8
567.6
117.8
1.40
.57
14.5
3.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G- 49

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP)

# OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S.D.
MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
1
1.99
0.0'
53.88
0.0
397.3
0.0
1.28 0.00
18.2 0.0
CHRYSLER
1
1.49
0.0
31.46
0.0
769.1
0.0
2.67 0.00
10.8 0.0
FORD MOTOR CO.
1
0.84
0.0
7.31
0.0
681.1
0.0
2.34 0.00
12.8 0.0
GENERAL MOTORS
15
1.60
0.5
39.99
21.1
605.8
92.4
1.20 .44
13.4 2.1
IMPORTS
2
1.13
0.9
29.99
33.4
341.1
1.0
1.46 .01
22.9 3.2
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 1.53 0.5 37.62 21.5 580.8 130.A 1.36 .55 14.5 3.7
*VEHICLE TYPE
AUTOMOBILE
TRUCK
18
2
1.55
1. 32
0.6
0.3
39.98
16.39
21.3
5.4
580.2
586.7
136.3
84.2
1.32
1.72
.55
.57
14.4
14.5
3.9
1.8
*VEHICLE OWNER











GSA
PRIVATE OWNER
1
19
1.54
1.53
0.0
0.5
20.19
38.54
0.0
21.7
527.2
583.6
0.0
133.3
2.13
1.32
0.00
.54
15.7
14.4
0.0
3.8
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
5
12
2
1
1.32
1.64
1. 13
1.99
0.4
0.5
0.9
0.0
14.40
47.22
29.99
53.88
10.7
16.5
33.4
0.0
668.2
599.6
341.1
397.3
95.0
93.4
1.0
0.0
1.79
1.17
1.46
1.28
.81
.40
.01
0.00
13.0
13.3
22.9
18.2
2.0
2.2
3.2
0.0
*DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
3
2
13
2
1.23
2.16
1.50
1.49
0.7
0.9
0.5
0.4
25.53
37.57
43.26
19.17
24.8
24.6
20. 3
21.5
400.6
447.2
624.9
697.8
103.0
113.1
92.1
38.3
1.19
1.60
1.29
1.82
.47
.74
.58
.21
20.6
17.5
12.9
12.1
4.5
2.4
1.8
0.1
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
, 5
13
1
1.41
1.58
1.54
1.23
0.0
0.9
0.4
0.0
16.63
35.22
40.42
34.34
0.0
25.9
21.4
0.0
519.6
425.6
638.3
670.7
0.0
144.7
73.1
0.0
0.65
1.52
1.32
1.67
0.00
.48
.59
0.00
16.1
19.2
12.7
12.2
0.0
4.5
1.3
0.0
ALL VEHICLES
20
1.53
0.5
37.62
21.5
580.8
130.4
1.36
.55
14.5
3.7
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-50

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.99
0.0
53.88
0.0
397.3
0.0
1.28
0.00
18.2
0.0
CHRYSLER
1
1.49
0.0
31.46
0.0
769.1
0.0
2.67
0.00
10.8
0.0
FORD MOTOR CO.
1
0.84
0.0
7.31
0.0
681.1
0.0
2.34
0.00
12.8
0.0
GENERAL MOTORS
15
1.60
0.5
39.99
21. 1
605.8
92.4
1.20
.44
13.4
2.1
IMPORTS
2
1.13
0.9
29.99
33.4
341.1
1.0
1.46
.01
22.9
3.2
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 1.53 0.5 37.62 21.5 580.8 130.4 1.36 .55 14.5 3.7
*VEHICLE TYPE
AUTOMOBILE	18 1.55 0.6 39.98 21.3 580.2 136.3 1.32 .55 14.4 3.9
TRUCK	2 1.32 0.3 16.39 5.4 586.7 84.2 1.72 .57 14.5 1.8
*VEHICLE OWNER
GSA
PRIVATE OWNER
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
*DISPLACEMENT
1
1.54 0.0
20.19
0.0
527.2
0.0
2.13
0.00
15.7
0.0
19
1.53 0.5
38.54
21.7
583.6
133.3
1.32
.54
14.4
3.8
(CONVERTER,AIR
PUMP)







5
1.32 0.4
14.40
10. 7
668.2
95.0
1.79
.81
13.0
2.0
12
1.64 0.5
47.22
16.5
599.6
93.4
1.17
.40
13.3
2.2
2
1.13 0.9
29.99
33.4
341.1
1.0
1.46
.01
22.9
3.2
1
1.99 0.0
53.88
0.0
397.3
0.0
1.28
0.00
18.2
0.0
LESS THAN 151
3
1.23
0.7
25.53
24.8
400. 6
103.0
1.19
.47
20.6
4.5
151 - 250
2
2.16
0.9
37.57
24.6
447.2
113.1
1.60
.74
17.5
2.4
251 - 350
13
1.50'
0.5
43. 26
20.3
624.9
92.1
1.29
.58
12.9
1.8
MORE THAN 350
2
1.49
0.4
19.17
21.5
697.8
38.3
1.82
.21
12.1
0.1
*INERTIA WEIGHT











1800 - 2799
1
1.41
0.0
16.63
0.0
519.6
0.0
0.65
0.00
16.1
0.0
2800 - 3799
5
1.58
0.9
35.22
25.9
425.6
144.7
1.52
.48
19.2
4.5
3800 - 4799
13
1.54
0.4
40.42
21.4
638.3
73.1
1.32
.59
12.7
1.3
4800 - 5799
1
1.23
0.0
34.34
0.0
670.7
0.0
1.67
0.00
12.2
0.0
ALL VEHICLES
20
1.53
0.5
37.62
21.5
580.8
130.4
1.36
.55
14.5
3.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-51

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
1
0.24
0.0
16.38
0.0
5.4
0.0
0.54
0.00 -1.1
0.0
1
0.55
0.0
0.40
0.0
-124.2
0.0
0.37
0.00 1.9
0.0
1
-0.04
0.0
0.15
0.0
0.4
0.0
-1.51
0.00 -0.0
0.0
15
0.21
0.5
9.00
20.1
-9.7
31.6
0.08
.30 -0.1
0.7
2
-0.12
0.3
-7.74
13.9
0.1
14.5
0.14
.28 0.5
2.1
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 0.18 0.5 6.83 18.5 -13.2 38.1 0.05 .47 0.0 0.9
*VEHICLE TYPE
AUTOMOBILE	18 0.15 0.5 6.45 19.1 -15.7 39.0 0.06 .46 0.1 0.9
TRUCK 2 0.49 0.5 10.16 17.5 9.7 23.7 -0.05 .67 -0.7 1.3
*VEHICLE OWNER
GSA
PRIVATE OWNER
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
*DISPLACEMENT
1 0.81 0.0
22.57
0.0
26.4
0.0
-0.52
vO
1
O
o
•
o
0.0
19 0.15 0.5
6.00
18.7
-15.3
38.0
0.08
.46 0.1
0.9
(CONVERTER,AIR
PUMP)






5 -0.17 0.6
-1.17
2.2
-20.0
59.5
-0.06
.83 0.4
0.9
12 0.38 0.4
11.79
21.7
-14.1
33.4
0.03
.30 -0.1
0.8
2 -0.12 0.3
-7.74
13.9
0.1
14.5
0.14
.28 0.5
2.1
1 0.24 0.0
16.38
0.0
5.4
0.0
0.54
0.00 -1.1
0.0
LESS THAN 151
3 -0.37
0.5
-6.68
10.0
1.7
10.6 0.09
.22 0.4
1.5
151 - 250
2 0.29
0.7
9.69
18.2
21.6
6.9 -0.26
.37 -1.0
0.8
251 - 350
13 0.37
0.3
9.50
20.9
-2 7.5
39.7 0.09
.53 0.2
0.8
MORE THAN 350
2 -0.30
0.5
6.83
9.1
23.2
3.6 0.01
.60 -0.5
0.2
*INERTIA WEIGHT








1800 - 2799
1 -0.88
0.0
-4.56
0.0
5.0
0.0 -0.02
0.00 0.1
0.0
2800 - 3799
5 -0.05
0.2
-0.43
12.2
4.5
10.2 -0.14
.81 -0.1
1.3
3800 - 4799
13 0.37
0.4
10.00
21.2
-24.0
43.4 0.16
.29 0.1
0.9
4800 - 5799	1 0.06 0.0 13.26 0.0 20.6 0.0 -0.41 0.00 -0.7 0.0
ALL VEHICLES 20 0.18 0.5 6.83 18.5 -13.2 38.1 0.05 .47 0.0 0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-52

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
( 19 75 VEHICLES—HOT START DATA)
(BASELINE—MANU. TUNE-UP)
#
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
10.8
0.0
23.3
0.0
1.3
*0.0
29.7
0.0
-6.6
0.0
CHRYSLER
1
27.0
0.0
1.3
0.0
-19.3
0.0
12.2
0.0
14.8
0.0
FORD MOTOR CO.
1
-5.0
0.0
2.0
0.0
0.1
0.0
-181.9
0.0
-0.1
0.0
GENERAL MOTORS
15
-0.7
52.1
9.8
26.9
-1.6
5.3
5.1
21.4
-0.9
5.4
IMPORTS
2
-2.2
31.3
-12.1
52.0
-0.1
4.3
7.6
15.8
2.5
9.2
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
0.9
45.8
7.5
27.1
-2.1
6.2
-2.4
46.6
-0.0
6.4
*VEHICLE TYPE











AUTOMOBILE
18
-1.7
47.5
6.6
25.5
-2.5
6.4
-2.2
48.2
0.5
6.1
TRUCK.
2
23.9
15.0
15.6
52.6
1.8
4.2
-3.9
40.2
-5.0
9.1
^VEHICLE OWNER











GSA
1
34.5
0.0
52.8
0.0
4.8
0.0
-32.3
0.0
-11.4
0.0
PRIVATE OWNER
19
-0.9
46.3
5.1
25.6
-2.4
6.2
-0.8
47.3
0.6
5.9
*C0NTR0L OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
-38.3
78.8
-9.5
19.6
-3.2
9.1
-26.0
87.8
2.8
7.0
CNV/NO A.PMP
L2
16.8
16.9
16.5
24.0
-2.2
5.7
3.1
22.9
-1.0
5.9
A.PMP/NO CNV
2
-2.2
31.3
-12.1
52.0
-0.1
4.3
7.6
15.8
2.5
9.2
NO CNV/NO APMP
1
10.8
0.0
23.3
0.0
1.3
0.0
29.7
0.0
-6.6
0.0
*DISPLACEMENT
LESS THAN 151
3
-56.8
97.2
-20.6
39.7
0.3
3.1
4.0
12.8
2.0
6.6
151 - 250
2
12.5
31.1
23.3
41.7
4.6
0.3
-16.1
22.8
-6.9
6.4
251 - 350
13
16.8
14.8
9.8
21.9
-4.4
6.4
-1.0
56.6
1.3
6.3
MORE THAN 350
2
-27.9
46.1
18.4
13.4
3.2
0.3
-7. 1
35.9
-4.5
1.7
*INERTIA WEIGHT
1800 - 2799
1
-166.0
0.0
-37.8
0.0
1.0
0.0
-3.2
0.0
0.9
0.0
2800 - 3799
5
-1.6
17.4
-1.0
29.9
1.1
2.9
-27.4
87.4
-0.8
6.0
3800 - 4799
13
14.3
26.3
12.6
24.6
-3.9
6.9
9.6
19.8
0.7
7.0
4800 - 5799
1
4.7
0.0
27.9
0.0
3.0
0.0
-32.5
0.0
-5.7
0.0
ALL VEHICLES
20
0.9
45.8
7.5
27.1
-2.1
6.2
-2.4
46.6
-0.0
6.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-53

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
( 19 75 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.32
0.0
9. 26
0.0
442.7
0.0
3.75
0.00
19.2
0.0
CHRYSLER
1
1.69
0.0
24.69
0.0
583.4
0.0
2.82
0.00
14.1
0.0
FORD MOTOR CO.
1
0.79
0.0
3.39
0.0
596.1
0.0
3.98
0.00
14.7
0.0
GENERAL MOTORS
15
1.06
0.5
21.67
13.8
586.5
95.4
1.87
.69
14.6
2.6
IMPORTS
2
0.78
0.4
12.34
12.7
337.5
15.4
1.98
.03
24.8
2.5
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 1.06 0.5 19.36 13.3 554.8 115.2 2.13 .87 15.8 4.0
*VEHICLE TYPE
AUTOMOBILE	18 1.05 0.5 20.29 13.8 555.9 119.7 2.03 .76 15.8 4.2
TRUCK	2 1.22 0.1 10.99 1.6 544.4 91.5 3.06 1.58 15.9 2.5
*VEHICLE OWNER
GSA	1 1.17 0.0 12.11 0.0 479.7 0.0 4.18 0.00 17.7 0.0
PRIVATE OWNER
19
1.06
0.5
19.74
13.6
558.7
117.0
2.02
.74
15.7
4.1
*C0NTR0L OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.07
0.5
9.64
9.0
582.7
117.3
2.52
.92
15.3
3.5
CNV/NO A.PMP
12
1.09
0.6
25.41
12.7
588.7
81.1
1.86
.77
14.3
2.0
A.PMP/NO CNV
2
0.78
0.4
12.34
12.7
337.5
15.4
1.98
.03
24.8
2.5
NO CNV/NO APMP
1
1.32
0.0
9.26
0.0
442.7
0.0
3.75
0.00
19.2
0.0
~DISPLACEMENT











LESS THAN 151
3
0.95
0.4
10.99
9.3
358.1
37.2
1.87
.20
23.7
2.7
151 - 250
2
1.80
0.9
26.74
20. 7
439.6
56.6
2.93
1.77
18.2
0.8
251 - 350
13
1.05
0.4
21.47
13.2
599.4
60.4
2.09
.88
14.1
1.8
MORE THAN 350
2
0.56
0.4
10.78
12.4
674 .6
72.4
1.98
.35
12.8
1.0
*INERTIA WEIGHT











1800 - 2799
1
1.30
0.0
8.28
0.0
399.1
0.0
1.64
0.00
21.3
0.0
2800 - 3799
5
1.22
0.7
15.74
16.1
422.7
106.9
2.67
1.10
20.5
4.5
3800 - 4799
13
1.00
0.5
21.58
13.2
612.3
62.8
1.99
.78
13.8
1.5
4800 - 5799
1
0.83
0.0
19.58
0.0
623.4
0.0
1.74
0.00
13.5
0.0
ALL VEHICLES
20
1.06
0.5
19.36
13.3
554.8
115.2
2.13
.87
15.8
4.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-54

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE--TUNEUP/PARADJ/DEV)
a OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.91
0.0
61.00
0.0
-40.0
0.0 -1.93
0.00 -2.2
0.0
CHRYSLER
1
0.35
0.0
7.17
0.0
61.5
0.0 0.22
0.00 -1.5
0.0
FORD MOTOR CO.
1
0.01
0.0
4.07
0.0
85.4
0.0 -3.15
0.00 -1.9
0.0
GENERAL MOTORS
15
0.75
0.7
27.32
23.8
9.5
55.2 -0.60
.63 -1.3
1.5
IMPORTS
2
0.24
0.2
9.90
6.7
3.7
30.9 -0.38
.32 -1.4
1.5
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
20
0.65
0.6
25.09
23.6
12.9
53.5 -0.73
1
oo
•
1.3
*VEHICLE TYPE









AUTOMOBILE
18
0.65
0.7
26.15
24.1
8.5
54.3 -0.65
.79 -1.3
1.3
TRUCK
2
0.60
0.8
15.56
21.3
52.0
31.0 -1.38
1.68 -2.1
2.0
*VEHICLE OWNER









GSA
1
1.18
0.0
30.65
0.0
73.9
0.0 -2.57
0.00 -3.5
0.0
PRIVATE OWNER
19
0.62
0.7
24.80
24.2
9.7
53.0 -0.63
.78 -1.2
1.3
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
5
0.08
0.6
3.58
2.5
65.5
41.6 -0.79
1.41 -1.9
1.8
CNV/NO A.PMP
12
0.93
0.6
33.60
22.5
-3.1
49.3 -0.66
.65 -1.1
1.1
A.PMP/NO CNV
2
0.24
0.2
9.90
6.7
3.7
30.9 -0.38
.32 -1.4
1.5
NO CNV/NO APMP
1
0.91
0.0
61.00
0.0
-40.0
0.0 -1.93
0.00 -2.2
0.0
*DISPLACEMENT









LESS THAN 151
3
-o.io
0.6
7.86
5.9
44. 3
73.7 -0.59
.43 -2.6
2.3
151 - 250
2
0.65
0.7
20.53
14.3
29.2
63.3 -1.58
1.40 -1.8
2.5
251 - 350
13
0.82
0.6
31.29
26.3
-2.0
50.0 -0.72
.90 -1.0
0.8
MORE THAN 350
2
0.63
0.2
15.21
18.1
46.4
30.5 -0.15
.47 -1.2
1.1
*INERTIA WEIGHT









1800 - 2799
1
-0.77
0.0
3.79
0.0
125.5
0.0 -1.01
0.00 -5.1
0.0
2800 - 3799
5
0.30
0.4
19.06
23.8
7.4
49.6 -1.28
1.24 -1.4
1.1
3800 - 4799
13
0.91
0.6
28.83
24.9
2.1
47.6 -0.51
.70 -1.0
1.0
4800 - 5799
1
0.46
0.0
28.02
0.0
67.9
0.0 -0.48
0.00 -2.0
0.0
ALL VEHICLES
20
0.65
0.6
25.09
23.6
12.9
53.5 -0.73

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES—HOT START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
40.8
0.0
86.8
0.0
-9.9
0.0
-106.0
0.0
-12.7
0.0
CHRYSLER
1
17.2
0.0
22.5
0.0
9.5
0.0
7.2
0.0
-11.8
0.0
FORD MOTOR CO.
1
1.2
0.0
54.6
0.0
12.5
0.0
-379.5
0.0
-15.2
0.0
GENERAL MOTORS
15
30.8
54.5
49.9
23.3
1.4
9.9
-54.0
51.5
-9.5
9.9
IMPORTS
2
20.6
10.2
50.6
14.1
0.9
9.0
-25.6
24.4
-5.9
6.1
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
28.1
47.5
50.7
22.8
1.8
9,6
-67.0
88.4
-9.7
8.8
*VEHICLE TYPE











AUTOMOBILE
18
28.3
49.5
52.1
20.7
1.0
9.7
-65.0
89.6
-9.1
8.5
TRUCK
2
25.9
34.4
38.2
47.4
9.0
6.1
-85.2
105.2
-15.0
14.2
*VEHICLE OWNER











GSA
1
50.2
0.0
71.7
0.0
13.3
0.0
-159.6
0:0
-25.1
0.0
PRIVATE OWNER
19
26.9
48.5
49.6
22.9
1.2
9.5
-62.1
88.0
-8.9
8.3
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
-10.4
81.0
33.6
21.5
10.8
8.2
-107.2
167.7
-13.4
10.9
CNV/NO A.PMP
12
44.3
22.8
54.8
21.1
-0.8
8.4
-53.9
42.8
-8.5
8.8
A.PMP/NO CNV
2
20.6
10.2
50.6
14.1
0.9
9.0
-25.6
24.4
-5.9
6.1
NO CNV/NO APMP
1
40.8
0.0
86.8
0.0
-9.9
0.0
-106.0
0.0
-12.7
0.0
*DISPLACEMENT











LESS THAN 151
3
-34.7
96.0
44. 2
14.9
8.6
14.8
-70.5
79.7
-14.3
15.1
151 - 250
2
27.5
32.2
45.9
36.5
4.6
12.3
-107.1
74.2
-12.6
17.6
251 - 350
13
38.6
25.9
52.0
25.6
-1.0
8.4
-68.0
100.2
-8.0
6.5
MORE THAN 350
2
54.5
26.7
56.8
3.0
6.6
4.6
-15.3
32.2
-10.8
9.2
*INERTIA WEIGHT










1800 - 2799
1
-145.3
0.0
31.4
0.0
23.9
0.0
-160.3
0.0
-31.0
0.0
2800 - 3799
5
17.6
16.5
52.6
24.7
0.1
9.4
-118.3
150.2
-8.0
6.7
3800 - 4799
13
44.9
24.9
50.8
24.2
0.1
8.2
-42.3
47.9
-8.1
7.9
4800 - 5799
1
35.7
0.0
58.9
0.0
9.8
0.0
-38.1
0.0
-17.3
0.0
ALL VEHICLES
20
28.1
47.5
50.7
22.8
00
•
9.6
-67.0
88.4
-9.7
8.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-56

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.32
0.0
9.26
0.0
442.7
0.0
3.75
0.00
19.2
0.0
CHRYSLER
1
1.69
0.0
24.69
0.0
583.4
0.0
2.82
0.00
14.1
0.0
FORD MOTOR CO.
1
0.79
0.0
3.39
0.0
596.1
0.0
3.98
0.00
14.7
0.0
GENERAL MOTORS
15
1.06
0.5
21.67
13.8
586.5
95.4
1.87
.69
14.6
2.6
IMPORTS
2
0.78
0.4
12.34
12.7
337.5
15.4
1.98
.03
24.8
2.5
*MODEL YEAR
1968	0
1969	0
1970	0
•1971	0
1972	0
1973	0
1974	0
1975	20 1.06 0.5 19,36 13.3 554.8 115.2 2.13 .87 15.8 4.0
*VEHICLE TYPE
AUTOMOBILE
TRUCK
18
2
1.05
1.22
0.5
0.1
20.29
10.99
13.8
1.6
555.9
544.4
119.7
91.5
2.03
3.06
.76
1.58
15.8
15.9
4.2
2.5
* VEHICLE OWNER











GSA
PRIVATE OWNER
1
19
1.17
1.06
0.0
0.5
12.11
19.74
0.0
13.6
479.7
558.7
0.0
117.0
4.18
2.02
0.00
.74
17.7
15.7
0.0
4.1
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
5
12
2
1
1.07
1.09
0.78
1.32
0.5
0.6
0.4
0.0
9.64
25.41
12.34
9.26
9.0
12.7
12.7
0.0
582.7
588.7
337.5
442.7
117.3
81.1
15.4
0.0
2.52
1.86
1.98
3.75
.92
.77
.03
0.00
15.3
14.3
24.8
19.2
3.5
2.0
2.5
0.0
^DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
3
2
13
2
0.95
1.80
1.05
0.56
0.4
0.9
0.4
0.4
10.99
26.74
21.47
10.78
9.3
20.7
13.2
12.4
358.1
439.6
599.4
674.6
37.2
56.6
60.4
72.4
1.87
2.93
2.09
1.98
.20
1.77
.88
.35
23.7
18.2
14.1
12.8
2.7
0.8
1.8
1.0
*INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
13
1
1. 30
1.22
1.00
0.83
0.0
0.7
0.5
0.0
8.28
15.74
21.58
19.58
0.0
16.1
13.2
0.0
399.1
422.7
612.3
623.4
0.0
106.9
62.8
0.0
1.64
2.67
1.99
1.74
0.00
1.10
.78
0.00
21.3
20.5
13.8
13.5
0.0
4.5
1.5
0.0
ALL VEHICLES
20
1,06
0.5
19,36
13.3
554.8
115.2
2.13
.87
15.8
4.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-57

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.67
0.0
44.62
0.0
-45.4
0.0 -2.47
0.00 -1.1
0.0
CHRYSLER
1
-0.20
0.0
6.77
0.0
185.7
0.0 -0.15
0.00 -3.4
0.0
FORD MOTOR CO.
1
0.05
0.0
3.92
0.0
85.0
0.0 -1.64
0.00 -1.9
0.0
GENERAL MOTORS
15
0.54
0.5
18.32
13.9
19.2
45.8 -0.68
.49 -1.2
1.4
IMPORTS
2
0.36
0.6
17.64
20.6
3.6
16.4 -0.52
.04 -2.0
0.6
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
20
0.46
0.5
18.27
14.8
26.1
58.7 -0.77
.63 -1.4
1.3
*VEHICLE TYPE









AUTOMOBILE
18
0.50
0.5
19.70
14.9
24.2
61.7 -0.71
.59 -1.4
1.4
TRUCK
2
0.11
0.4
5.40
3.8
42.3
7.3 -1.34
1.01 -1.4
0.8
*VEHICLE OWNER









GSA
1
0.37
0.0
8.08
0.0
47.5
0.0 -2.05
0.00 -1.9
0.0
PRIVATE OWNER
19
0.47
0.5
18.80
15.0
24.9
60.1 -0.71
.57 -1.3
1.3
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
5
0.25
0.7
4.75
2.7
85.5
72.6 -0.73
.61 -2.3
2.0
CNV/NO A.PMP
12
0.55
0.5
21.81
13.3
11.0
40.0 -0.69
.52 -0.9
0.8
A.PMP/NO CNV
2
0.36
0.6
17.64
20.6
3.6
16.4 -0.52
.04 -2.0
0.6
NO CNV/NO APMP
1
0.67
0.0
44.62
0.0
-45.4
0.0 -2.47
0.00 -1.1
0,.0
~DISPLACEMENT









LESS THAN 151
3
0.27
0.4
14.54
15.5
42.6
68.5 -0.68
.27 -3.0
1.9
151 - 250
2
0.36
0.0
10.84
3.9
7.6
56.4 -1.32
1.03 -0.8
1.6
251 - 350
13
0.45
0.5
21.79
16.0
25.5
64.7 -0.81
.64 -1.2
1.0
MORE THAN 350
2
0.93
0.7
8.38
9.0
23.2
34.1 -0.16
.13 -0.7
0.9
~INERTIA WEIGHT









1800 - 2799
1
0.11
0.0
8.35
0.0
120.5
0.0 -0.99
0.00 -5.2
0.0
2800 - 3799
5
0.36
0.4
19.48
18.3
2.9
51.4 -1.15
.88 -1.3
1.1
3800 - 4799
13
0.54
0.6
18.83
14.9
26.1
59.7 -0.67
.51 -1.1
1.0
4800 - 5799
1
0.40
0.0
14.76
0.0
47.3
0.0 -0.07
0.00 -1.3
0.0
ALL VEHICLES
20
0.46
0.5
18.27
14.8
26.1
58.7 -0.77
.63 -1.4
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
G-58

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
It OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
33.7
0.0
82.8
0.0
-11.4
0.0
-193.0
0.0
-5.8
0.
CHRYSLER
1
-13.4
0.0
21.5
0.0
24.1
0.0
-5.6
0.0
-31.2
0.
FORD MOTOR CO.
1
6.0
0.0
53.6
0.0
12.5
0.0
-70.1
0.0
-15.1
o.
GENERAL MOTORS
15
31.2
28.8
44.4
17.9
3.0
8.4
-64.5
44. 6
-8.6
8.
IMPORTS
2
16.8
35.5
53.9
8.8
1.0
4.8
-35.6
3.3
-8.8
4.
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
26.4
28.6
46.6
18.8
3.6
9.6
-65.4
51.0
-9.9
9.
*VEHICLE TYPE











AUTOMOBILE
18
28.7
28.5
48.3
18.8
3.2
10.1
-64.7
53.2
-10.0
9.
TRUCK
2
5.3
26.5
30.8
13.0
7.4
2.3
-71.6
34.8
-9.4
4.
*VEHICLE OWNER











GSA
1
24.0
0.0
40.0
0.0
9.0
0.0
-96.2
0.0
-12.3
0.
PRIVATE OWNER
19
26.5
29.3
46.9
19.3
3.3
9.8
-63.7
51.9
-9.8
9.
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
14.0
40.1
39.4
16.4
13.1
10.6
-57.6
59.0
-17.2
14.
CNV/NO A.PMP
12
32.5
24.0
45.3
18.8
1.3
7.0
-62.9
39.5
-7.4
6.
A.PMP/NO CNV
2
16.8
35.5
53.9
8.8
1.0
4.8
-35.6
3.3
-8.8
4.
NO CNV/NO APMP
1
33.7
0.0
82.8
0.0
-11.4
0.0
-193.0
0.0
-5.8
0.
*DISPLACEMENT











LESS THAN 151
3
13.8
25.6
52.7
6. 6
8.4
13.2
-74.5
67.4
-16.6
13.
151 - 250
2
18.5
7.8
32.4
10.8
0.1
12.6
-75.4
29.4
-5.1
10.
251 - 350
13
25.6
29.2
47.3
22.3
3.0
9.7
-70.4
51.9
-9.7
8.
MORE THAN 350
2
58.0
36.0
46.6
5.1
3.5
5.1
-8.7
6.4
-5.9
7.
*INERTIA WEIGHT










1800 - 2799
1
7.8
0.0
50.2
0.0
23.2
0-0
-152.3
0.0
-32.2
0.
2800 - 3799
5
17.2
20.5
53.8
21.0
-1.1
9.8
-77.8
66. 0
-7.3
6.
3800 - 4799
13
30.9
32.6
43.8
19.6
3.6
8.5
-58.6
40.2
-9.1
8.
4800 - 5799
1
32.5
0.0
43.0
0.0
7.1
0.0
-4.2
0.0
-10.9
0.
ALL VEHICLES
20
26.4
28.6
46. 6
18.8
3.6
9.6
-65.4
51.0
-9.9
9.
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
0
0
0
8
0
3
7
1
0
5
2
4
0
0
8
1
6
1
0
6
8
0
3
G-59

-------
APPENDIX H
TABLES OF TEST RESULTS
DATA SET 1
DATA SET 2
DATA SET 3
DATA SET 4
PAGE H-2
PAGE H-14
PAGE H-26
PAGE H-48
H-l

-------
1975 VEHICLES
DATA SET 1
2 VEHICLES
H-2

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE)
VEH. MEAN S.D, MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.30 0.0 70.15 0.0 452.8 0.0 3.54 0.00 15.5 0.0
FORD MOTOR CO.	0
CENERAL MOTORS	1 1.76 0.0 34.81 0.0 537.7 0.0 1.00 0.00 14.8 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
^VEHICLE OWNER
GSA	2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 1.76 0.0 34.81 0.0 537.7 0.0 1.00 0.00 14.8 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.30 0.0 70.15 0.0 452.8 0.0 3.54 0.00 15.5 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
4800 - 5799	0
ALL VEHICLES 2 2.53 1.1 52.48 25.0 495.2 60.0 2.27 1.80 15.2 0.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-3

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(PARAMETRIC ADJ.)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.85 0.0 52.78 0.0 470.3 0.0 5.21 0.00 15.7 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 3.69 0.0 16.74 0-0 556.3 0.0 2.43 0.00 14.9 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973-	0
1974	0
1975	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
*VEHICLE OWNER
GSA	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 3.69 0.0 16.74 0.0 556.3 0.0 2.43 0-00 14.9 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.85 0.0 52.78 0.0 470.3 0.0 5.21 0.00 15.7 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
251 - 350	0
MORE THAN 350	0
* INERTIA WEIGHT
1800 - 2799	0
2800 r 3799	0
3800 - 4799	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
4800 - 5799	0
ALL VEHICLES 2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-4

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—PARAMETRIC ADJ.)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.85 0.0 52.78 0.0 470.3 0.0 5.21 0.00 15.7 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 3.69 0.0 16.74 0.0 556.3 0.0 2.43 0.00 14.9 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
^VEHICLE OWNER
GSA	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 3.69 0.0 16.74 0.0 556.3 0.0 2.43 0.00 14.9 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.85 0.0 52.78 0.0 470.3 0.0 5.21 0.00 15.7 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
251 - 350	0
MORE THAN 350	0
MNERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
4800 - 5799	0
ALL VEHICLES 2 3.77 0.1 34.76 25.5 513.3 60.8 3.82 1.97 15.3 0.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-5

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—PARAMETRIC ADJ.)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 -0.55 0.0 17.37 0.0 -17.5 0.0 -1.67 0.00 -0.2 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 -1.93 0.0 18.07 0.0 -18.6 0.0-1.43 0.00-0.1 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
*VEHICLE OWNER
GSA	2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 -1.93 0.0 18.07 0.0 -18.6 0.0 -1.43 0.00 -0.1 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 -0.55 0-0 17.37 0-0 -17.5 0-0 -1.67 0.00 -0.2 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
4800 - 5799	0
ALL VEHICLES 2 -1.24 1.0 17.72 0.5 -18.1 0.8 -1.55 .17 -0.2 0.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-6

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—PARAMETRIC ADJ.)
it OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	I -16.7 0.0 24.8 0.0 -3.9 0.0 -47.2 0.0 -1.4 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 -109.7 0.0 51.9 0.0 -3.5 0.0-143.0 0.0 -0.6 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 -63.2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8 -1.0 0.6
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 -63.2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8- -1.0 0.6
^VEHICLE OWNER
GSA	2 -63,2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8 -1.0 0.6
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1-109.7 0.0 51.9 0.0 -3.5 0.0-143.0 0.0 -0.6 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 -16.7 0.0 24.8 0.0 -3.9 0.0 -47.2 0.0 -1.4 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 -63.2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8 -1.0 0.6
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 -63.2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8 -1.0 0.6
4800 - 5799	0
ALL VEHICLES 2 -63.2 65.8 38.3 19.2 -3.7 0.3 -95.1 67.8 -1.0 0.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-7

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.52 0-0 45.44 0.0 474.4 0.0 3.90 0.00 15.9 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0.92 0.0 13.95 0.0 539.4 0.0 3.02 0.00 15.7 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
*VEHICLE OWNER
GSA	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.92 0.0 13.95 0.0 539.4 0.0 3.02 0.00 15.7 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.52 0.0 45.44 0.0 474.4 0.0 3.90 0.00 15.9 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
4800 - 5799	0
ALL VEHICLES 2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-8

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
//OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
-VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 -0.22 0.0 24.71 0-0 -21.6 0-0 -0.36 0.00 -0.5 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0-84 0.0 20.86 0.0 -1.7 0.0-2.020.00-0.9 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
19 73	0
1974	0
1975	2 0.31 0.7 22.78 2.7 -11.6 14.1 -1.19 1.17 -0.7 0.3
^VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 0.31 0.7 22.78 2.7 -11.6 14.1 -1.19 1.17 -0.7 0.3
^VEHICLE OWNER
GSA	2 0.31 0.7 22.78 2.7 -11.6 14.1 -1.19 1.17 -0.7 0.3
PRIVATE OWNER	0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.84 0.0 20.86 0.0 -1.7 0.0 -2.02 0.00 -0.9 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 -0.22 0.0 24.71 0.0 -21.6 0.0 -0.36 0.00 -0.5 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 0.31 0.7 22.78 2.7 -11.6 14.1 -1.19 1.17 -0.7 0.3
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 0.31 0.7 22.78 2.7 -11.6 14.1 -1.19 1.17 -0.7 0.3
4800 - 5799	0
ALL VEHICLES 2 0.31 0.7 22.78 2.7 -11.6 14.1-1.19 1.17-0.7 0.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-9

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—PARA ADJ/DEVICE)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1' -6.7 0.0 35.2 0.0 -4.8 0.0 -10.2 0.0 -3.0 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 47.7 0.0 59.9 0.0 -0.3 0.0 -202.0 0.0 -6.0 0.0
IMPORTS	0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 20.5 38.5 47.6 17.5 -2.5 3.1-106.1 135.6 -4.5 2.1
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 20.5 38.5 47.6 17.5 -2.5 3.1 -106.1 135.6 -4.5 2.1
*VEHICLE OWNER
GSA	2 20.5 38.5 47.6 17.5 -2.5 3.1 -106.1 135.6 -4.5 2.1
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 47.7 0.0 59.9 0.0 -0.3 0.0 -202.0 0.0 -6.0 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 -6.7 0.0 35.2 0.0 -4.8 0.0 -10.2 0.0 -3.0 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 20.5 38.5 47.6 17.5 -2.5 3.1 -106.1 135.6 -4.5 2.1
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800-4799	2 20.5 38.5 47.6 17.5 -2.5 3.1-106.1 135.6 -4.5 2.1
4800 - 5799	0
ALL VEHICLES 2 20.5 38.5 47.6 17.5 -2.5 3.1-106.1 135.6 -4.5 2.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-10

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
#	OF I1C	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 3.52 0.0 45.44 0.0 474.4 0.0 3.90 0.00 15.9 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 0.92 0.0 13.95 0.0 539.4 0.0 3.02 0.00 15.7 0.0
IMPORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
^VEHICLE OWNER
CSA	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
PRIVATE OWNER	0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 0.92 0.0 13.95 0.0 539.4 0.0 3.02 0.00 15.7 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 3.52 0.0 45.44 0.0 474.4 0.0 3.90 0.00 15.9 0.0
^DISPLACEMENT
LESS THAN 151	0
151 - 250	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
4800 - 5799	0
ALL VEHICLES	2 2.22 1.8 29.69 22.3 506.9 46.0 3.46 .62 15.8 0.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-ll

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
//	OF HC CO CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 0.33 0.0 7.34 0.0 -4.1 0.0 1.31 0.00-0.2 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 2.77 0-0 2.79 0.0 16.9 0.0 -0.59 0.00 -0.8 0.0
D1 PORTS	0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
*VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
*VEHICLE OWNER
GSA	2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
PRIVATE OWNER	0
*CONTROL OPT IONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 2.77 0.0 2.79 0.0 16.9 0.0 -0.59 0.00 -0.8 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 0.33 0.0 7.34 0.0 -4.1 0.0 1.31 0.00-0.2 0.0
*DISPLACEMENT
LESS THAN 151	0
151 - 250	2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
251 - 350	0
MORE THAN 350	0
*INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
4800 - 5799	0
ALL VEHICLES 2 1.55 1.7 5.07 3.2 6.4 14.8 0.36 1.34 -0.5 0.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-12

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(PARAMETRIC ADJ.-PARA ADJ/DEVICE)
//OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	0
CHRYSLER	1 8.6 0.0 13.9 0.0 -0.9 0.0 25.1 0.0 -1.5 0.0
FORD MOTOR CO.	0
GENERAL MOTORS	1 75.1 0.0 16.7 0.0 3.0 0.0 -24.3 0.0 -5.A 0.0
LM PORTS	0
~MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
19 74	0
1975	2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4 2.7
~VEHICLE TYPE
AUTOMOBILE	0
TRUCK	2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4. 2.7
*VEHICLE OWNER
CSA	2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4 2.7
PRIVATE OWNER	0
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	1 75.1 0.0 16.7 0.0 3.0 0.0 -24.3 0.0 -5.4 0.0
A.PMP/NO CNV	0
NO CNV/NO APMP	1 8.6 0.0 13.9 0.0 -0.9 0.0 25.1 0.0 -1.5 0.0
~DISPLACEMENT
LESS THAN 151	0
151 - 250	2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4 2.7
251 - 350	0
MORE THAN 350	0
~INERTIA WEIGHT
1800 - 2799	0
2800 - 3799	0
3800 - 4799	2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4 .2.7
4800 - 5799	0
ALL VEHICLES 2 41.8 47.0 15.3 2.0 1.1 2.8 0.4 34.9 -3.4 2.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-13

-------
1975 VEHICLES
DATA SET 2
5 VEHICLES
H-14

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
2.25
0.0
68.40
0.0
417.9
0.0
2.01
0.00
16.7
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
2.49
0.9
40.85
23.9
531.9
131.0
1.55
.31
15.0
2.7
IMPORTS
1
0.67
0.0
10.75
0.0
356.7
0.0
1.42
0.00
23.6
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
2.08
1.0
40.34
26.5
474. 1
123.8
1.62
.31
17.1
4.2
*VEHICLE TYPE











AUTOMOBILE
3
1.95
1.2
45.53
30.6
388.2
30.6
1.55
.41
19.5
3.7
TRUCK
2
2.26
1.1
32.55
27.0
602.9
63.6
1.72
.16
13.4
0.4
*VEHICLE OWNER











GSA
1
3.03
0.0
51.64
0.0
557.9
0.0
1.61
0.00
13.7
0.0
PRIVATE OWNER
4
1.84
1.0
37.51
29.7
453.1
132.3
1.62
.36
17.9
4.4
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
1.50
0.0
13.47
0.0
647.9
0.0
1.83
0.00
13.2
0.0
CNV/NO A.PMP
2
2.98
0.1
54.53
4.1
4 73.9
118.8
1.41
.28
15.9
3.1
A.PMP/NO CNV
1
0.67
0.0
10.75
0.0
356.7
0.0
1.42
0.00
23.6
0.0
NO CNV/NO APMP
1
2.25
0.0
68.40
0.0
417.9
0.0
2.01
0.00
16.7
0.0
^DISPLACEMENT











LESS THAN 151
1
0.67
0.0
10.75
0.0
356.7
0.0
1.42
0.00
23.6
0.0
151 - 250
2
2.98
0. 1
54.53
4.1
473.9
118.8
1.41
.28
15.9
3.1
251 - 350
2
1.88
0.5
40.93
38.8
532.9
162.6
1.92
.13
14.9
2.5
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.95
1.2
45.53
30.6
388.2
30.6
1.55
.41
19.5
3.7
3800 - 4799
2
2.26
1.1
32.55
27.0
602.9
63.6
1.72
.16
13.4
0.4
4800 - 5799
0










ALL VEHICLES
5
2.08
1.0
40.34
26.5
474.1
123.8
1.62
.31
17.1
4.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-15

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP)
#	OF HC CO CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 2.13 0.0 60.40 0.0 413.7 0.0 1.35 0.00 17.2 0.0
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3 2.35 0.9 34.54 21.9 519.6 144.3 1.59 .48 15.6 3.0
IMPORTS	1 0.60 0.0 8.65 0.0 348.3 0.0 1.46 0.00 24.4 0.0
*M0DEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5 1.95 1.0 34.53 24.0 464.2 129.2 1.52 .36 17.7 4.3
*	VEHICLE TYPE
AUTOMOBILE	3 1.96 1.3 42.52 29.4 377.7 33.2 1.35 .11 20.1 3.8
TRUCK	2 1.94 0.9 22.55 9.8 593.9 92.2 1.77 .52 14.1 1.6
*	VEHICLE OWNER
GSA	1 2.56 0.0 29.50 0.0 528.7 0.0 2.14 0.00 15.2 0.0
PRIVATE OWNER	4 1.80 1.1 35.79 27.5 448.0 143.3 1.36 .09 18.3 4.8
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	1 1.33 0.0 15.60 0.0 659.1 0.0 1.40 0.00 12.9 0.0
CNV/NO A.PMP	2 2.85 0-4 44.01 20.5 449.8 111.5 1.69 .64 17.0 2.5
A.PMP/NO CNV	1 0.60 0-0 8.65 0.0 348.3 0.0 1.46 0.00 24.4 0.0
NO CNV/NO APMP	1 2.13 0-0 60.40 0.0 413.7 0.0 1.35 0.00 17.2 0.0
~DISPLACEMENT
LESS THAN 151
1
0.60
0.0
8.65
0.0
348.3
0.0
1.46
0.00
24.4
0.0
151 - 250
2
2.85
0.4
44.01
20. 5
449.8
111.5
1.69
.64
17.0
2.5
251 - 350
2
1.73
0.6
38.00
31.7
536.4
173.5
1.37
.04
15.1
3.1
MORE THAN 350
0










~INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.96
1.3
42.52
29.4
377.7
33.2
1.35
.11
20.1
3.8
3800 - 4799
2
1.94
0.9
22.55
9.8
593.9
92.2
1.77
.52
14.1
1.6
4800 - 5799	0
ALL VEHICLES 5 1.95 1.0 34.53 24.0 464.2 129.2 1.52 .36 17.7 4.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-16

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE— MANU. TUNE-UP)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
2.13
0.0
60.40
0.0
413.7
0.0
1.35
0.00
17.2,
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
2. 35
0.9
34.54
21.9
519.6
144.3
1.59
.48
15.6
3.0
IMPORTS
1
0.60
0.0
8.65
0.0
348.3
0.0
1.46
0.00
24.4
0.0
*M0DEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
1.95
1.0
34.53
24.0
464.2
129.2
1.52
.36
17.7
4.3
*VEHICLE TYPE











AUTOMOBILE
3
1.96
1.3
42.52
29.4
377.7
33.2
1.35
.11
20.1
3.8
TRUCK
2
1.94
0.9
22.55
9.8
593.9
92.2
1.77
.52
14.1
1.6
*VEHICLE OWNER











GSA
1
2.56
0.0
29.50
0.0
528.7
0.0
2.14
0.00
15.2
0.0
PRIVATE OWNER
4
1.80
1.1
35.79
27.5'
448.0
143.3
1.36
.09
18.3
4.8
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
1.33
0.0
15.60
0.0
659.1
0.0
1.40
0.00
12.9
0.0
CNV/NO A.PMP
2
2.85
0.4
44.01
20.5
449.8
111.5
1.69
.64
17.0
2.5
A.PMP/NO CNV
1
0.60
0.0
8.65
0.0
348.3
0.0
1.46
0.00
24.4
0.0
NO CNV/NO APMP
1 ¦
2.13
0.0
60.40
0.0
413.7
0.0
1.35
0.00
17.2
0.0
^DISPLACEMENT











LESS THAN 151
1
0.60
0.0
8.65
0.0
348.3
0.0
1.46
0.00
24.4
0.0
151 - 250
2
2.85
0.4
44.01
20.5
449.8
111.5
1.69
.64
17.0
2.5
251 - 350
2
1.73
0.6
38.00
31.7
536.4
173.5
1.37
.04
15.1
3.1
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.96
1.3
42.52
29.4
377.7
33.2
1.35
.11
20.1
3.8
3800 - 4799
2
1.94
0.9
22.55
9.8
593.9
92.2
1.77
.52
14.1
1.6
4800 - 5799
0










ALL VEHICLES
5
1.95
1.0
34.53
24.0
464.2
129.2
1.52
.36
17.7
4.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-17

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—MANU. 'TUNE-UP)
it OF HC
VEH. MEAN S.D.
CO	CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3
IMPORTS	1
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5
*VEHICLE TYPE
AUTOMOBILE	3
TRUCK	2
*VEHICLE OWNER
GSA	1
PRIVATE OWNER	4
0.12 0.0 8.00 0.0 4.2 0.0 0.66 0.00 -0.6 0.0
0. 14
0.07
0.3
0.0
6.31
2.10
-0.01
0.32
0.47
0.04
0.2
0.2
0.0
0.2
3.00
10.00
22. 14
1.72
^CONTROL OPTIONS(CONVERTER,AIR	PUMP)
CNV/A.PMP 1 0.17 0.0	-2.13
CNV/NO A.PMP 2 0.13 0.5	10.52
A.PMP/NO CNV 1 0.07 0.0	2.10
NO CNV/NO APMP 1 0.12 0.0	8.00
*DISPLACEMENT
13.7
0.0
0.12 0.2 5.80 9.9
4.6
17.2
0.0
4.6
0.0
16.4
0.0
0.0
12.3 21.0 -0.04 .48 -0.6 0.9
8.4 0.0 -0.04 0.00 -0.8 0.0
9.9 15.3 0.10 .46 -0.6 0.6
10.5 7.6 0.20 .40 -0.7 0.1
9.0 28.6 -0.05 .68 -0.6 1.3
29.2 0.0 -0.53 0.00 -1.5 0.0
5.1 12.5 0.26 .35 -0.4 0.5
-11.2	0.0 0.43 0.00	0.3	0.0
24.0	7.3 -0.28 .36	-1.1	0.6
8.4	0.0 -0.04 0.00	-0.8	0.0
4.2	0.0 0.66 0.00	-0.6	0.0
LESS THAN 151
1
0.07
0.0
2.10
0.0
8.4
0.0
-0.04
0.00 -0.8
0.0
151 - 250
2
0.13
0.5
10.52
16.4
24.0
7.3
-0.28
.36 -1.1
0.6
251 - 350
2
0. 14
0.0
2.93
7.2
-3.5
10.9
0.55
.16 -0.1
0.6
MORE THAN 350
0









*INERTIA WEIGHT










1800 - 2799
0









2800 - 3799
3
-0.01
0.2
3.00
4.6
10.5
7.6
0.20
.40 -0.7
0.1
3800 - 4799
2
0.32
0.2
10.00
17.2
9.0
28.6
-0.05
.68 -0.6
1.3
4800 - 5799
ALL VEHICLES
5 0.12 0.2 5.80 9.9
9.9 15.3 0.10 .46 -0.6 0.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-18

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)
1i OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
5.3
0.0
11.7
0.0
1.0
0.0
32.8
0.0
-3.3
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
6.6
12.1
8.4
30.7
2.8
3.9
-3.7
28.3
-4.2
6.7
IMPORTS
1
10.4
0.0
19.5
0.0
2.4
0.0
-2.8
0.0
-3.3
0.0
~MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
7.1
8.7
11.3
22.2
2.3
2.9
3.8
25.8
-3.9
4.8
*VEHICLE TYPE











AUTOMOBILE
3
2.9
9.0
9.8
10.8
2. 7
1.9
9.5
20.3
-3.4
0.1
TRUCK
2
13.4
. 3.0
13.5
41.5
1.8
4.9
-4.7
39.9
-4.6
9.4
*VEHICLE OWNER











GSA
1
15.5
0.0
42.9
0.0
5. 2
0.0
-32.9
0.0
-11.3
0.0
PRIVATE OWNER
4
5.0
8.5
3.4
15.6
1.6
2.7
13.0.
18.0
-2.0
2.7
~CONTROL OPT IONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
11.3
0.0
-15.8
0.0
-1.7
0.0
23.5
0.0
2.1
0.0
CNV/NO A.PMP
2
4.2
16.0
20.5
31.7
5.0
0.3
-17.3
22.1
-7.4
5.5
A.PMP/NO CNV
1
10.4
0.0
19.5
0.0
2.4
0.0
-2.8
0.0
-3.3
0.0
NO CNV/NO APMP
1
5.3
0.0
11.7
0.0
1.0
0.0
32.8
0.0
-3.3
0.0
~DISPLACEMENT











LESS THAN 151
1
10.4
0.0
19.5
0.0
2.4
0.0
-2.8
0.0
-3.3
0.0
151 - 250
2
4.2
16.0
20.5
31.7
5.0
0.3
-17.3
22.1
-7.4
5.5
251 - 350
2
8.3
4.2
-2.1
19.5
-0.4
1.9
28.2
6.6
-0.6
3.8
MORE THAN 350
0










~INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
2.9
9.0
9.8
10.8
2.7
1.9
9.5
20.3
-3.4
0.1
3800 - 4799
2
13.4
3.0
13.5
41.5
1.8
4.9
-4.7
39.9
-4.6
9.4
4800 - 5799
0










ALL VEHICLES
5
7.1
8.7
11.3
22.2
2.3
2.9
3.8
25.8
-3.9
4.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-19

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
if OF	HC CO C02 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1 1.36 0.0 10.52 0.0 457.3 0.0 3.82 0.00 18.6 0.0
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3 2.14 0.9 25.64 19.6 505.0 110.5 2.68 1.26 16.3 2.3
IMPORTS	1 0.71 0.0 5.14 0.0 334.6 0.0 2.04 0.00 25.7 0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5 1.70 0.9 18.51 17.1 461.4 107.5 2.78 1.10 18.6 4.4
*VEHICLE TYPE
AUTOMOBILE	3 1.74 1.3 21.24 23.4 399.5 61.7 2.58 1.07 20.8 4.3
TRUCK	2 1.64 0.1 14.42 3.9 554.2 99.6 3.07 1.49 15.4 2.5
* VEHICLE OWNER
GSA	1 1.74 0.0 17.20 0.0 483.8 0.0 4.13 0.00 17.2 0.0
PRIVATE OWNER	4 1.69 1.0 18.84 19.7 455.8 123.3 2.44 .92 19.0 5.0
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	1 1.55 0.0 11.65 0.0 624.6 0.0 2.02 0.00 13.7 0.0
CNV/NO A.PMP	2 2.44 1.0 32.63 21.8 445.2 54.6 3.01 1.58 17.6 0.6
A.PMP/NO CNV	1 0.71 0.0 5.14 0.0 334.6 0.0 2.04 0.00 25.7 0.0
NO CNV/NO APMP	1 1.36 0.0 10.52 0.0 457.3 0.0 3.82 0.00 18.6 0.0
*DISPLACEMENT
LESS THAN 151
1
0. 71
0.0
5.14
0.0
3 34.6
0.0
2.04
0.00
25.7
0.0
151 - 250
2
2.44
1.0
32.63
21.8
445.2
54.6
3.01
1.58
17.6
0.6
251 - 350
2
1.45
0.1
11.08
0.8
540.9
118.3
2.92
1.27
16.1
3.4
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.74
1.3
21.24
23.4
399.5
61.7
2.58
1.07
20.8
4.3
3800 - 4799
2
1.64
0.1
14.42
3.9
554.2
99.6
3.07
1.49
15.4
2.5
4800 - 5799
ALL VEHICLES 5 1.70 0.9 18.51 17.1 461.4 107.5 2.78 1.10 18.6 4.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-20

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
it
OF
HC

CO

C02 NOX
MP
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
MEAN
~VEHICLE MANUFACTURER







AMER. MOTORS
1
0.89
0.0
57.88
0.0
-39.4
0.0 -1.81
0.00
-1.9
CHRYSLER
0







FORD MOTOR CO.
0








GENERAL MOTORS
3
0.35
0.8
15.21
17.1
26.9
45.5 -1.13
1.23
-1.3
IMPORTS
1
-0.04
0.0
5.61
0.0
22.1
0.0 -0.62
0.00
-2.1
~MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
5
0.38
0.7
21.82
23.9
12.7
43.4 -1.16
.97
-1.6
*VEHICLE TYPE









AUTOMOBILE
3
. 0.22
0.6
24.29
29.2
-11.3
31.1 -1.03
.67
-1.3
TRUCK
2
0.62
0.9
18.13
23.1
48.7
35.9 -1.36
1.65
-2.0
*VEHICLE OWNER









GSA
1
1.29
0.0
34.44
0.0
74.1
0.0 -2.52
0.00
-3.5
PRIVATE OWNER
4
0.15
0.5
18.67
26. 3
-2.7
30.7 -0.82
.69
-1.1
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
1
-0.05
0.0
1.82
0.0
23.3
0.0 .-0.19
0.00
-0.5
CNV/NO A.PMP
2
0.54
1.1
21.90
17.7
28.7
64.2 -1.60
1.31
-1.7
A.PMP/NO CNV
1
-0.04
0.0
5.61
0.0
22.1
0.0 -0.62
0.00
-2.1
NO CNV/NO APMP
1
0.89
0.0
57.88
0.0
-39.4
0.0 -1.81
0.00
-1.9
~DISPLACEMENT









LESS THAN 151
1
-0.04
0.0
5.61
0.0
22.1
0.0 -0.62
0.00
-2.1
151 - 250
2
0.54
1.1
21.90
17.7
28.7
64.2 -1.60
1.31
-1.7
251 - 350
2
0.42
0.7
29.85
39.6
-8.1
44.3 -1.00
1.15
-1.2
MORE THAN 350
0








~INERTIA WEIGHT









1800 - 2799
0








2800 - 3799
3
0.22
0.6
24.29
29.2
-11.3
31.1 -1.03
.67
-1.3
3800 - 4799
2
0.62
0.9
18.13
23. 1
48.7
35.9 -1.36
1.65
-2.0
4800 - 5799
0







ALL VEHICLES
5
0.38
0.7
21.82
23.9
12.7
43.4 -1.16
.97
-1.6
1.2
2.1
0.0
1.1
0.0
2.5
0.0
0.0
0.0
2.5
1.0
1.2
2.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-21

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
// OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
39.6
0.0
84.6
0.0
-9.4
0.0
-90.0
0.0
-11.3
0.0
CHRYSLER
0










FORD MOTOR CO.
0










GENERAL MOTORS
3
10.8
27.6
32.2
29.9
4.2
8.8
-73.9
74.9
-9.7
14.0
IMPORTS
1
-6.0
0.0
52.2
0.0
6.2
0.0
-43.7
0.0
-8.9
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










19 7 A
0










1975
5 ,
13.2
25.5
46.7
31.2
1.9
8.9
-71.1
55.6
-9.9
9.9
*VEHICLE TYPE











AUTOMOBILE
3
8.9
26.5
51.0
34.2
-2.5
8.0
-62.9
24.2
-6.6
6.2
TRUCK
2
19.6
32.5
40.1
37.6
8.4
6.8
-83.5
103.3
-14.8
15.3
*VEHICLE OWNER











GSA
1
42.6
0.0
66.7
0.0
13.3
0.0
-156.5
0.0
-25.7
0.0
PRIVATE OWNER
4
5.9
22.5
41.7
33.6
-1.0
7.2
-49.8
32.9
-5.9
5.3
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
-3.3
0.0
13*. 5
0.0
3.6
0.0
-10.4
0.0
-4.0
0.0
CNV/NO A.PMP
2
17.9
34.9
41.5
35.6
4.5
12.4
-105.7
71.8
-12.6
18.5
A.PMP/NO CNV
1
-6.0
0.0
52.2
0.0
6.2
0.0
-43.7
0.0
-8.9
0.0
NO CNV/NO APMP
1
39.6
0.0
84.6
0.0
-9.4
0.0
-90.0
0.0
-11.3
0.0
^DISPLACEMENT











LESS THAN 151
1
-6.0
0.0
52.2
0.0
6.2
0.0
-43.7
0.0
-8.9
0.0
151 - 250
2
17.9
34.9
41.5
35.6
4.5
12.4
-105.7
71.8
-12.6
18.5
251 - 350
2
18.1
30.3
49. 1
50.3
-2.9
9.2
-50.2
56. 3
-7.7
5.2
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
8.9
26.5
51.0
34.2
-2.5
8.0
-62.9
24.2
-6.6
6.2
3800 - 4799
2
19.6
32.5
40. 1
37.6
8.4
6.8
-83.5
103.3
-14.8
15.3
4800 - 5799
0









ALL VEHICLES
5
13.2
25.5
46.7
31.2
1.9
8.9
-71.1
55.6
-9.9
9.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-22

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
CHRYSLER
0









FORD MOTOR CO.
0










GENERAL MOTORS
3
2.14
0.9
25.64
19.6
505.0
110.5
2.68
1.26
16.3
2.3
IMPORTS
1
0.71
0.0
5. 14
0.0
334.6
0.0
2.04
0.00
25.7
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
5
1.70
0.9
18.51
17.1
461.4
107.5
2.78
1.10
18.6
4.4
^-VEHICLE TYPE











AUTOMOBILE
3
1.74
1.3
21.24
23.4
399.5
61.7
2.58
1.07
20.8
4.3
TRUCK
2
1.64
0.1
14.42
3.9
554.2
99.6
3.07
1.49
15.4
2.5
^VEHICLE OWNER











GSA
1
1.74
0.0
17.20
0.0
483.8
0.0
4.13
0.00
17.2
0.0
PRIVATE OWNER
4
1.69
1.0
18.84
19.7
455.8
123.3
2.44
.92
19.0
5.0
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
1.55
0.0
11.65
0.0
624.6
0.0
2.02
0.00
13.7
0.0
CNV/NO A.PMP
2
2.44
1.0
32.63
21.8
445.2
54.6
3.01
1.58
17.6
0.6
A.PMP/NO CNV
1
0. 71
0.0
5.14
0.0
334.6
0.0
2.04
0.00
25.7
0.0
NO CNV/NO APMP
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
^DISPLACEMENT











LESS THAN 151
1
0.71
0.0
5.14
0.0
334.6
0.0
2.04
0.00
25.7
0.0
151 - 250
2
2.44
1.0
32.63
21.8
445.2
54.6
3.01
1.58
17.6
0.6
251 - 350
2
1.45
0.1
11.08
0.8
540.9
118.3
2.92
1.27
16.1
3.4
MORE THAN 350
0










*INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
1.74
1.3
21.24
23.4
399.5
61.7
2.58
1.07
20.8
4.3
3800 - 4799
2
1.64
0.1
14.42
3.9
554.2
99.6
3.07
1.49
15.4
2.5
4800 - 5799
0







ALL VEHICLES
5
1.70
0.9
18.51
17.1
461.4
107.5
2.78
1.10
18.6
4.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-23

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
#
OF
HC

CO

C02 NOX
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
*VEHICLE MANUFACTURER






AMER. MOTORS
1
0.77
0.0
49.88
0.0
-43.6
0.0 -2.47
0.00
CHRYSLER
0







FORD MOTOR CO.
0







GENERAL MOTORS
3
0.20
0.5
8.90
4.4
14.6
43.8 -1.09
.78
IMPORTS
1
-0. 11
0.0
3.51
0.0
13.7
0.0 -0.58
0.00
*MODEL YEAR








1968
0







1969
0







1970
0







1971
0







1972
0







1973
0







1974
0







1975
5
0.25
0.5
16.02
19.3
2.8
40.4 -1.26
.90
*VEHICLE TYPE








AUTOMOBILE
3
0.22
0.5
21.28
25.0
-21.8
31.0 -1.23
1.07
TRUCK
2
0.30
0.7
8.13
5.9
39.7
7.4 -1.31
.97
*VEHICLE OWNER








GSA
1
0.82
0.0
12.30
0.0
44.9
0.0 -1.99
0.00
PRIVATE OWNER
4
0.11
0.4
16.95
22.2
-7.8
37.9 -1.08
.93
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)




CNV/A.PMP
1
-0.22
0.0
3.95
0.0
34.5
0.0 -0.62
0.00
CNV/NO A.PMP
2
0.41
0.6
11.38
1.3
4.6
56.9 -1.32
.95
A.PMP/NO CNV
1
-0.11
0.0
3.51
0.0
13.7
0.0 -0.58
0.00
NO CNV/NO APMP
1
0.77
0.0
49.88
0.0
-43.6
0.0 -2.47
0.00
^DISPLACEMENT








LESS THAN 151
1
-0.11
0.0
3.51
0.0
13.7
0.0 -0.58
0.00
151 - 250
2
0.41
0.6
11.38
1.3
4.6
56.9 -1.32
.95
251 - 350
2
0.28
0.7
26.91
32.5
-4.6
55.2 -1.55
1.31
MORE THAN 350
0







*INERTIA WEIGHT








1800 - 2799
0







2800 - 3799
3
0.22
0.5
21.28
25.0
-21.8
31.0 -1.23
1.07
3800 - 4799
2
0.30
0.7
8.13
5.9
39. 7
7.4 -1.31
.97
4800 - 5799
0







ALL VEHICLES
5
0.25
0.5
16.02
19.3
2.8
40.4 -1.26
.90
MPG
1.2
0.8
0.0
1.0
1.9
0.0
0.0
0.0
1.9
0.4
1.2
0.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-24

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO2	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	0
FORD MOTOR CO.	0
GENERAL MOTORS	3
IMPORTS	1
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	5
*VEHICLE TYPE
AUTOMOBILE	3
TRUCK	2
*VEHICLE OWNER
36.2 0.0 82.6 0.0 -10.5 0.0 -183.0 0.0 -7.8 0.0
5.3 24.7 28.3 12.2 1.4 9.6 -63.2 26.1 -5.1 8.5
-18.3 0.0 40.6 0.0 3.9 0.0 -39.7 0.0 -5.5 0.0
6.7 26.1 41.6 25.0 -0.5 8.9 -82.5 60.0 -5.7 6.1
6.0
7.7
27.7
34.3
47.0
33.5
32.8
11.6
-5.4
6.9
8.1 -91.7
2.3 -68.6
79.3	-3.1
34.4	-9.6
6.2
4.8
GSA
1
32.0
0.0
41.7
0.0
8.5
0.0
-93.0
0.0
-12.9
0.0
PRIVATE OWNER
4
0.4
25.3
41.6
28.9
-2.7
8.5
-79.8
68.9
-3.9
5.3
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
1
-16.5
0.0
25.3
0.0
5.2
0.0
-44.3
0.0
-6.2
0.0
CNV/NO A.PMP
2
16.2
22.4
29.8
16.8
-0. 6
12.8
-72.7
28.7
-4.5
11.9
A.PMP/NO CNV
1
-18.3
0.0
40.6
0.0
3.9
0.0
-39.7
0.0
-5.5
0.0
NO CNV/NO APMP
1
36.2
0.0
82.6'
0.0
-10. 5
0.0
-183.0
0.0
-7.8
0.0
*DISPLACEMENT











LESS THAN 151
1
-18.3
0.0
40.6
0.0
3.9
0.0
-39. 7
0.0
, -5.5
0.0
151 - 250
2
16.2
22.4
29.8
16.8
-0.6
12.8
-72.7
28.7
-4.5
11.9
251 - 350
2
9.8
37.3
54.0
40.5
-2.7
11.2
-113.6
98.1
-7.0
1.1
MORE THAN 350
0










* INERTIA WEIGHT











1800 - 2799
0










2800 - 3799
3
6.0
27.7
47.0
32.8
-5.4
8.1
-91.7
79.3
-3.1
6.2
3800 - 4799
2
7.7
34.3
33.5
11.6
6.9
2.3
-68.6
34.4
-9.6
4.8
4800 - 5799
0










ALL VEHICLES
5
6.7
26.1
41.6
25.0
-0.5
8.9
-82.5
60.0
-5.7
6.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-25

-------
1975 VEHICLES
DATA SET 3
15 VEHICLES
H-26

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE)
// OF HC	CO	CO 2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
2.68
0.0
40.41
0.0
659.7
0.0
3.03
0.00
12.1
0.0
FORD MOTOR CO.
1
1.00
0.0
11.83
0.0
702.0
0.0
0.85
0.00
12.3
0.0
GENERAL MOTORS
12
2.09
0.7
58.08
29.9
632.2
70.5
1.33
.44
12.3
1.4
IMPORTS
1
1.71
0.0
42. 31
0.0
339. 1
0.0
1.81
0.00
21.6
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
2.03
0.7
52.77
29.5
619.2
101.3
1.44
.61
12.9
2.7
*VEHICLE TYPE











AUTOMOBILE
15
2.03
0.7
52.77
29.5
619.2
101.3
1.44
.61
12.9
2.7
TRUCK
0










*VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
2.03
0.7
52.77
29.5
619.2
101.3
1.44
.61
12.9
2.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
1.54
0.8
20.71
13.3
668.6
97.7
1.75
1.16
12.8
1.9
CNV/NO A.PMP
10
2.26
0.6
66.64
24.6
627.4
53.8
1.28
.22
12.1
1.0
A.PMP/NO CNV
1
1.71
0.0
42.31
0.0
339.1
0.0
1.81
0.00
21.6
0.0
NO CNV/NO APMP
0








*DISPLACEMENT











LESS THAN 151
2
1.35
0.5
29.67
17.9
439.4
141.9
1.24
.80
18.6
4.2
151 - 250
0









251 - 350
11
2.25
0.7
60.93
29.1
628.9
49.5
1.40
.59
12.2
0.9
MORE THAN 350
2
1.49
0.0
30.99
24.6
745.1
39.2
1.88
.78
11.1
0.0
*INERTIA WEIGHT











1800 - 2799
1
1.00
0.0
17.04
0.0
539.8
0.0
0.68
0.00
15.6
0.0
2800 - 3799
2
1.35
0.5
27.07
21.6
520.6
256.6
1.33
.68
16.9
6.6
3800 - 4799
11
2. 30
0.6
61.09
28.8
635.4
62.8
1.54
.64
12.1
1.0
4800 - 5799
1
1.50
0.0
48.41
0.0
717.4
0.0
1.33
0.00
11.1
0.0
ALL VEHICLES
15
2.03
0.7
52.77
29.5
619.2
101.3
1.44
.61
12.9
2.7


AUTOMOTIVE
TESTING LABORATORIES.INC.






19900
E. COLFAX,
AURORA
, COLO.
80011




H-27

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MAiNU. TUNE-UP)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
3.76
0.0
48.03
0.0
790.8
0.0
2.66
0.00
10.1
0.0
FORD MOTOR CO.
1
1.33
0.0
16.81
0.0
694. 7
0.0
2.21
0.00
12.2
0.0
GENERAL MOTORS
12
1.83
0.4
48.16
21.2
646.9
" 70.6
1.21
.39
12.3
1.3
IMPORTS
1
2.05
0.0
58.33
0.0
348.0
0.0
1.48
0.00
19.9
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
1.94
0.6
46.74
20.7
639.8
109.1
1.39
.56
12.7
2.4
*VEHICLE TYPE











AUTOMOBILE
15
1.94
0.6
46.74
20.7
639.8
109.1
1.39
.56
12.7
2.4
TRUCK
0










* VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
1.94
0.6
46.74-
20.7
639.8
109.1
1.39
.56
12.7
2.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
2.20
1.1
23.36
17.7
689.4
116.3
1.90
.85
12.4
2.4
CNV/NO A.PMP
10
1.83
0.4
54.94
15.2
649.1
57.8
1.17
.28
12.0
0.8
A.PMP/NO CNV
1
2.05
0.0
58.33
0.0
348.0
0.0
1.48
0.00
19.9
0.0
NO CNV/NO APMP
0









*DISPLACEMENT











LESS THAN 151
2
1.98
0.1
40.23
25.6
436.6
125.3
1.08
.56
17.8
3.0
151 - 250
0








251 - 350
11
2.00
0.7
52.50
17.8
661.7
69.3
1.35
.58
11.9
1.0
MORE THAN 350
2
1.60
0.3
21.61
21.4
722.2
35.0
1.88
.22
11.7
0.0
*INERTIA WEIGHT











1800 - 2799
1
1.91
0.0
22.13
0.0
525.2
0.0
0.69
0.00
15.7
0.0
2800 - 3799
2
1.69
0.5
37.57
29.4
521.3
245.2
1.84
.52
16.1
5.4
3800 - 4799
11
2.04
0.7
51.56
20.0
666.5
73.5
1.34
.55
11.8
1.0
4800 - 5799
1
1.40
0.0
36.75
0.0
697.5
0.0
1.72
0.00
11.7
0.0
ALL VEHICLES
15
1.94
0.6
46.74
20.7
639.8
109.1
1.39
.56
12.7
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
11-28

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLE-COLD START DATA)
(TUNE-UP/PARA ADJ)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
3. 11
0.0
38.58
0.0
727.6
0.0
3.49
0.00
11.1
0.0
FORD MOTOR CO.
1
1.09
0.0
10. 15
0.0
645.2
0.0
2.94
0.00
13.4
0.0
GENERAL MOTORS
12
1.84
0.5
38.29
17.2
615.9
86.2
1.60
.60
13.3
2.1
IMPORTS
1
2.20
0.0
63.77
0.0
355.4
0.0
1.21
0.00
19.2
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
*VEHICLE TYPE
AUTOMOBILE	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 1.89 0.9 19.38 13.2 644.7 146.2 2.55 1.09 13.6 3.6
CNV/NO A.PMP	10 1.87 0.5 43.07 14.4 618.5 55.3 1.54 .49 12.9 1.1
A.PMP/NO CNV	1 2.20 0.0 63.77 0.0 355.4 0.0 1.21 0.00 19.2 0.0
NO CNV/NO APMP
*DISPLACEMENT
LESS THAN 151	2 1.98 0.3 40.52 32.9 397.2 59.1 1.09 .16 19.0 0.3
151 - 250
251 - 350	11 1.99 0.6 41.88 15.4 630.6 62.1 1.82 .84 12.7 1.2
MORE THAN 350	2 1.31 0.4 15.15 5.1 694.0 103.0 2.31 .66 12.4 1.7
*INERTIA WEIGHT
1800 - 2799	1 1.77 0.0 17.27 0.0 439.0 0.0 0.98 0.00 18.8 0.0
2300 - 3799	2 1.64 0.8 36.96 37.9 500.3 204.9 2.07 1.22 16.3 4.1
3800 - 4799	11 2.04 0.5 42.00 15.1 641.7 74.6 1.80 .82 12.5 1.2
4800 - 5799	1 1.02 0.0 18.78 0.0 621.2 0.0 1.84 0.00 13.6 0.0
ALL VEHICLES 15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
4
1.89
0.9
10
1.87
0. 5
1
2. 20
0.0
0


2
1.98
0.3
0


11
1.99
0.6
2
1.31
0.4
1
1.77
0.0
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-29

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
A11ER. MOTORS
0










CHRYSLER
1
3.76
0.0
48.03
0.0
790.8
OiO
2.66
0.00
10.1
0.0
FORD MOTOR CO.
1
1.33
0.0
16.81
0.0
694. 7
0.0
2.21
0.00
12.2
0.0
GENERAL MOTORS
12
1.83
0.4
48.16
21.2
646.9
70.6
1.21
.39
12.3
1.3
IMPORTS
1
2.05
0.0
58.33
0.0
348.0
0.0
1.48
0.00
19.9.
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.94 0.6 46.74 20.7 639.8 109.1 1.39 .56 12.7 2.4
*VEHICLE TYPE
2.4
2.4
2.4
0.8
0.0
0
*DISPLACEMENT
LESS THAN 151 2 1.98 0.1 40.23 25.6 436.6 125.3 1.08 .56 17.8 3.0
151 - 250	0
251 - 350	11 2.00 0.7 52.50 17.8 661.7 69.3 1.35 .58 11.9 1.0
MORE THAN 350 2 1.60 0.3 21.61 21.4 722.2 35.0 1.88 .22 11.7 0.0
*INERTIA WEIGHT
AUTOMOBILE
TRUCK
15
0
1.94
0.6
46.74
20.7
639.8
109.1
1.39
.56
12.7
*VEHICLE OWNER










GSA
PRIVATE OWNER
0
15
1.94
0.6
46.74
20.7
639.8
109.1
1.39
.56
12.7
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
2.20
1.83
2.05
1.1
0.4
0.0
23.36
54.94
58.33
17.7
15.2
0.0
689.4
649.1
348.0
116.3
57.8
0.0
1.90
1.17
1.48
.85
.28
0.00
12.4
12.0
19.9
1800 - 2799
1
1.91
0.0
22.13
0.0
525.2
0.0
0.69
0.00
15.7
0.0
2800 - 37-99
2
1.69
0.5
37.57
29.4
521.3
245.2
1.84
.52
16.1
5.4
3800 - 4799
11
2.04
0.7
51.56
20.0
666.5
73.5
1.34
.55
11.8
1.0
4800 - 5799
1
1.40
0.0
36.75
0.0
697.5
0.0
1.72
0.00
11.7
0.0
ALL VEHICLES
15
1.94
0.6
46. 74
20.7
639.8
109.1
1.39
.56
12.7
2.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-30

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 0
CHRYSLER
1
-1.
.08
0.
.0
-7.62
0.
,0
-131.
.1
0.0
0.
,37
0.00
2.0
0.0
FORD MOTOR CO.
1
-0.
33
0.
.0
-4.98
o.
.0
7.
.3
0.0
-1.
.36
0.00
0.0
0.0
GENERAL MOTORS
12
0.
26
0.
.6
9.92
23.
, 1
-14.
.7
36.2
0.
.12
.27
0.0
0.6
IMPORTS
1
-0.
34
0.
,0
-16.02
0.
,0
-8.
,9
0.0
0.
,33
0.00
1.7
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 0.09 0.6 6.03 22.1 -20.6 44.7 0.05 .46 0.2 0.9
*VEHICLE TYPE
AUTOMOBILE	15 0.09 0.6 6.03 22.1 -20.6 44.7 0.05 .46 0.2 0.9
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 0.09 0.6 6.03 22.1 -20.6 44.7 0.05 .46 0.2 0.9
*C0NTR0L OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 -0.66 0.4 -2.65 6.6 -20.8 73.9 -0.15 .83 0.4 1.1
CNV/NO A.PMP	10 0.43 0.4 11.70 24.9 -21.7 35.6 0.11 .28 0.1 0.7
A.PMP/NO CNV	1 -0.34 0.0-16.02 0.0 -8.9 0.0 0.33 0.00 1.7 0.0
NO CNV/NO APMP	0
^DISPLACEMENT
LESS THAN 151	2 -0.63 0.4 -10.56 7.7 2.9 16.6 0.16 .24 0.8 1.3
151 - 250	0
251 - 350	11 0.25 0.6 8.43 24.8 -32.8 45.9 0.04 .51 0.3 0.8
MORE THAN 350	2 -0.11 0.3 9.38 3.2 22.9 4.2 0.01 .57 -0.5 0.0
*INERTIA WEIGHT
1800 - 2799	1 -0.91 0.0 -5.09 0.0 14.6 0.0 -0.01 0.00 -0.1 0.0
2800 - 3799	2 -0.34 0.0 -10.50 7.8 -0.8 11.5 -0.51 1.20 0.9 1.2
3800 - 4799	11 0.25 0.6 9.53 24.4 -31.1 47.9 0.20 .23 0.2 0.9
4800 - 5799	1 0.10 0.0 11.66 0.0 19.9 0.0 -0.39 0.00 -0.6 0.0
ALL VEHICLES 15 0.09 0.6 6.03 22.1 -20.6 44.7 0.05 .46 0.2 0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-31

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)
#
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S,
*VEHICLE MANUFACTURER








AMER. MOTORS
0









CHRYSLER
1
-40.3
0.0
-18.9
0.0
-19.9
0.0
12.2
0.0
16.7
FORD MOTOR CO.
1
-33.0
0.0
-42.1
0.0
1.0
0.0
-160.0
0.0
0.2
GENERAL MOTORS
12
4.5
34.8
12.7
26.7
-2.5
5.8
7.1
19.4
-0.2
IMPORTS
1
-19.9
0.0
-37.9
0.0
-2.6
0.0
18.2
0.0
7.9
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
0









1974
0









1975
15
-2.6
34.4
3.5
30.6
-3.4
7.0
-3.0
•C-
00
1.5
*VEHICLE TYPE










AUTOMOBILE
15
-2.6
34.4
3.5
30.6
-3.4
7.0
-3.0
46.8
1.5
TRUCK
0









*VEHICLE OWNER










GSA
0









PRIVATE OWNER
15
-2.6
34.4
3.5
30.6
-3.4
7.0
-3.0
46.8
1.5
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
4
-46.3
30.9
-9.6
42.4
-3.2
11.2
-33.1
84.9
2.9
CNV/NO A.PMP
10
16.6
15.2
13.0
22. 3
-3.6
5.8
7.0
21.0
0.3
A.PMP/NO CNV
1
-19.9
0.0
-37.9
0.0
-2.6
0.0
18.2
0.0
7.9
NO CNV/NO APMP
0









^DISPLACEMENT










LESS THAN 151
2
-55.4
50.3
-33.9
5. 7
0.0
3.8
8.4
13.9
3.6
151 - 250
0









251 - 350
11
7.8
26. 1
4.0
27.4
-5.2
7.2
-4.4
54.0
2.2
MORE THAN 350
2
-7.1
19.4
38. 2
19.9
3. 1
0.4
-6.3
32.6
-4.9
*INERTIA WEIGHT










1800 - 2799
1
-91.0
0.0
-29.9
0.0
2.7
0.0
-1.5
0.0
-0.6
2800 - 3799
2
-26.4
9.3
-40.0
3.0
-0.8
2.6
-70.9
126.0
4.0
3800 - 4799
11
8.9
24.4
12.6
26. 3
-5.0
7.4
11.6
15.9
1.8
4800 - 5799
1
6.7
0.0
24.1
0.0
2.8
0.0
-29.3
0.0
-5.0
ALL VEHICLES
15
-2.6
34.4
3.5
30.6
-3.4
7.0
-3.0
46.8
1.5
0.0
0.0
5.4
0.0
9.4
5.8
0.0
6.0
7.1
0.3
0.0
5.5
7.4
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-32

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
it OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
3.11
0.0
38.58
0.0
727.6
0.0
3.49
0.00
11.1
0.0
FORD MOTOR CO.
1
1.09
0.0
10.15
0.0
645.2
0.0
2.94
0.00
13.4
0.0
GENERAL MOTORS
12
1.84
0.5
38. 29
17.2
615.9
86.2
1.60
.60
13.3
2.1
IMPORTS
1
2.20
0.0
63.77
0.0
355.4
0.0
1.21
0.00
19.2
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
*VEHICLE TYPE
AUTOMOBILE	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
TRUCK 0
^VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
4
1.89
0.9
19.38
13.2
644.7
146.2
2.55
1.09
13.6
CNV/NO A.PMP
10
1.87
0.5
43.07
14.4
618.5
55.3
1.54
.49
12.9
A.PMP/NO CNV
1
2.20
0.0
63.77
0.0
355.4
0.0
1.21
0.00
19.2
NO CNV/NO APMP
0









*DISPLACEMENT










LESS THAN 151
2
1.98
0.3
40.52
32.9
397.2
59.1
1.09
. 16
19.0
151 - 250
0








251 - 350
11
1.99
0.6
41.88
15.4
630.6
62.1
1.82
.84
12.7
MORE THAN 350
2
1.31
0.4
15.15
5.1
694.0
103.0
2.31
.66
12.4
*INERTIA WEIGHT










1800 - 2799
1
1.77
0.0
17.27
0.0
439.0
0.0
0.98
0.00
18.8
2800 - 3799
2
1.64
0.8
36.96
37.9
500.3
204.9
2.07
1.22
16.3
3800 - 4799
11
2.04
0.5
42.00
15.1
641.7
74.6
1.80
.82
12.5
4800 - 5799
1
1.02
0.0
18.78
0.0
621.2
0.0
1.84
0.00
13.6
3.6
1.1
0.0
0.3
1.2
1.7
0.0
4.1
1.2
0.0
ALL VEHICLES 15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-33

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
9 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 0
CHRYSLER
1
-0.43
0.
,0
1,
.83
0.
,0
-67.9
0.
.0
-0.
, 46
0.00
1.
.0
0.0
FORD MOTOR CO.
1
-0.09
0.
.0
1.
.68
0.
,0
56.8
0.
.0
-2.
.09
0.00
-1.
. 1
0.0
GENERAL MOTORS
12
0.25
0.
.7
19,
.79
25.
,8
16.3
47.
,0
-0.
,27
.40
-1.
.0
1.2
IMPORTS
1
-0.49
0.
.0
-21,
.46
0.
,0
-16.3
0.
,0
0.
,60
0.00
2.
.4
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 0.13 0.7 14.64 25.8 11.2 49.1 -0.35 .64 -0.6 1.4
*VEHICLE TYPE
AUTOMOBILE	15 0.13 0.7 14.64 25.8 11.2 49.1 -0.35 .64 -0.6 1.4
TRUCK	0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 0.13 0.7 14.64 25.8 11.2 49.1 -0.35 .64 -0.6 1.4
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 -0.35 0.3 1.33 1.0 23.9 72.4 -0.80 .86 -0.9 1.8
CNV/NO A.PMP	10 0.38 0.7 23.57 26.8 8.9 42.9 -0.26 .45 -0.8 1.0
A.PMP/NO CNV	1 -0.49 0.0 -21.46 0.0 -16.3 0.0 0.60 0.00 2.4 0.0
NO CNV/NO APMP	0
~DISPLACEMENT
19.05
15.83
LESS THAN 151
2
-0.63
0.2
151 - 250
0


251 - 350
11
0.26
0.7
MORE THAN 350
2
0.18
0.4
~INERTIA WEIGHT



1800 - 2799
1
-0.77
0.0
2800 - 3799
2
-0.29
0.3
3800 - 4799
11
0.26
0.7
4800 - 5799
1
0.48
0.0
ALL VEHICLES
15
0.13
0.7
15.0
42.3
82.8 0.15
.64 -0.4
4.0
26.8
-1.7
39.8 -0.42
.70 -0.5
0.9
19.5
51.1
63.8 -0.43
.12 -1.3
1.6
-0.23	0.0	100.8	0.0 -0.30 0.00 -3.2	0.0
-9.89	16.4	20.3	51.7 -0.74 1.90 0.7	2.5
19.08	26.8	-6.3	35.0 -0.26 .42 -0.4	0.9
29.63	0.0	96.2	0.0 -0.51 0.00 -2.4	0.0
15 0.13 0.7 14.64 25.8 11.2 49.1 -0.35 .64 -0.6 1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-34

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-TUNE-UP/PARA ADJ)
if OF
HC

CO

C02
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D
*VEHICLE MANUFACTURER





AMER. MOTORS 0






CHRYSLER 1
-16.0
0.0
4.5
0.0
-10.3
0.0
FORD MOTOR CO. 1
-9.0
0.0
14.2
0.0
8. 1
0.0
GENERAL MOTORS 12
3.2
39.0
26.7
27.0
2.7
7.7
IMPORTS 1
-28.7
0.0
-50.7
0.0
-4.8
0.0
NOX	MPG
MEAN S.D. MEAN S.D.
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15
*VEHICLE TYPE
AUTOMOBILE	15
TRUCK	0
^VEHICLE OWNER
GSA	0
PRIVATE OWNER	15
-1.0 35.8 19.3 31.4
-1.0 35.8 19.3 31.4
-1.0 35.8 19.3 31.4
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4	-27.5	33.2 8.1
CNV/NO A.PHP	10	12.4	32.2 30.7
A.PMP/NO CNV	1	-28.7	0.0 -50.7
NO CNV/NO APMP	0
^DISPLACEMENT
7.9
27.7
0.0
-15.2
-245.9
-22.2
33.1
0.0
8.3
0.0
0.0
-8.9
0.0
31.1
-7.8
9.0
0.0
11.1
0.0
1.7 8.0 -33.0 66.6 -5.5 10.1
1.7 8.0 -33.0 66.6 -5.5 10.1
1.7 8.0 -33.0 66.6 -5.5 10.1
4.3 12.2 -79.8 111.6 -5.6 12.3
1.2 6.5 -20.9 33.4 -7.1 8.6
-4.8 0.0 33.1 0.0 11.1 0.0
LESS THAN
151
2
-52.8
34.2 -26.0
34.9
6.9
16.6
-5.5
54.6
-4.8
22.5
151 - 250

0









251 - 350

11
6.1
31.2 24.1
25.4
-0.3
6.2
-39.2
75.3
-4.5
7.9
MORE THAN
350
2
12.0
28.3 38.1
32.7
7.1
8.9
-26.1
17.3
-11.6
14.8
*INERTIA WEIGHT
1800 - 2799
1
-77.
0
0.
0
-1.
,3
0.0
18.7
0.0
-44.
1
0.0
-20.
,7
2800 - 3799
9
-18.
8
13.
9
-18.
,3
45.9
1.6
9.1
-106.
4
197.3
1.
,1
3800 - 4 799
11
6.
1
31.
2
24.
1
25.4
-0.9
5.5
-18.
1
31.2
-3.
.8
4800 - 5799
1
32.
0
0.
0
61.
,2
0.0
13.4
0.0
-38.
3
0.0
-22.
.0
ALL VEHICLES
15
-1.
0
35.
8
19.
,3
31.4
1.7
8.0
-33.
0
66.6
-5.
.5
0.0
L4.1
7.8
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-35

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
2.27
0.0
32.30
0.0
600.2
0.0
2.76
0.00
13.5
0.0
FORD MOTOR CO.
1
0.98
0.0
6.27
0.0
617.8
0.0
3.90
0.00
14.1
0.0
GENERAL MOTORS
12
1.27
0.6
25. 16
15.4
628.3
86.6
1.84
.29
13.5
2.4
IMPORTS
1
1.22
0.0
25.69
0.0
356.0
0.0
1.93
0.00
22.2
0.0
~MODEL YE'AR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.31 0.6 24.41 14.7 607.5 103.9 2.04 .62 14.1 3.1
*VEHICLE TYPE
AUTOMOBILE	15 1.31 0.6 24.41 14.7 607.5 103.9 2.04 .62 14.1 3.1
TRUCK	0
* VEHICLE OWNER
GSA
PRIVATE OWNER
0
15
1.31
0.6
24.41
14.7
607.5
103.9
2.04
.62
14.1
3.1
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
1.39
1.29
1.22
0.8
0.6
0.0
13.86
28.50
25.69
12.8
14.6
0.0
595.7
637.4
356.0
143.2
43. 1
0.0
2.65
1.81
1.93
.95
.27
0.00
14.9
13.0
22.2
3.9
0.8
0.0
~DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
1.52
1.39
0.71
0.4
0.7
0.3
19.13
27.81
10.99
9.3
15.2
9.5
382. 1
631.7
699.9
36.9
42.5
80.0
1.78
2.08
2.06
.21
.71
.34
21.3
13.1
12.4
1.2
0.9
1.1
~INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
1.82
1.10
1.34
0.91
0.0
0.2
0.7
0.0
12.58
15.98
27.63
17.68
0.0
13.7
15.4
0.0
408.2
486.9
644.3
643.4
0.0
185.1
56. 3
0.0
1.64
2.91
1.94
1.82
0.00
1.39
.40
0.00
20.5
18.1
12.9
13.2
0.0
5.7
0.9
0.0
ALL VEHICLES
15
1.31
0.6
24.41
14.7
607.5
103.9
2.04
.62
14.1
3.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-36

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
// OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
0
1
1
12
1
0.41
0.02
0.82
0.49
0.0
0.0
0.7
0.0
8.11
5.56
32.92
16.62
0.0
0.0
24.6
0.0
59.5
84.2
4.0
-16.9
0.0 0.27
0.0 -3.05
61.7 -0.51
0.0 -0.12
0.00 -1.4
0.00 -1.8
.34 -1.2
0.00 -0.6
0.0
0.0
1.4
0.0
AMODEL YEAR









1968
1969
1970
1971
1972
1973
1974
1975
0
0
0
0
0
0
0
15
0.72
0.7
28.36
23.9
11.6
60.3 -0.60
.77 -1.2
1.3
*VEHICLE TYPE









AUTOMOBILE
TRUCK
15
0
0.72
0.7
28.36
23.9
11.6
60.3 -0.60
.77 -1.2
1.3
*VEHICLE OWNER









GSA
PRIVATE OWNER
0
15
0. 72
0.7
28.36
23.9
11.6
60.3 -0.60
.77 -1.2
1.3
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
0.15
0.97
0.49
0.8
0.5
0.0
6.84
38.14
16.62
2.2
23.7
0.0
72.9
-10. 1
-16.9
48.1 -0.90
51.0 -0.53
0.0 -0.12
1.54 -2.1
.27 -0.9
0.00 -0.6
1.9
0.9
0.0
^DISPLACEMENT









LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
-0. 16
0.86
0.78
0.9
0.6
0.3
10. 54
33. 12
19.99
8.6
25.8
15.2
57.4
-2.8
45.2
105.0 -0.54
54.3 -0.69
40.7 -0.18
.59 -2.7
.86 -0.9
.45 -1.3
3.0
0.9
1.1
*INERTIA WEIGHT









1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
-0.82
0.25
0.95
0.59
0.0
0.3
0.5
0.0
4.46
11.09
33.46
30.73
0.0
7.8
25.5
0.0
131.6
33.7
-9.0
74.0
0.0 -0.96
71.5 -1.58
46.8 -0.40
0.0 -0.49
0.00 -4.9
2.07 -1.2
.39 -0.8
0.00 -2.1
0.0
0.9
0.8
0.0
ALL VEHICLES
15
0. 72
0.7
28.36
23.9
11.6
60.3 -0.60
.77 -1.2
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-37

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(19 75 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0
















CHRYSLER
1
15.
,3
0.
,0
20.
,1
0.
,0
9.
,0
0.
0
8.
,9
0.0
-11.2
FORD MOTOR CO.
1
2.
.0
0.
.0
47.
0
0.
,0
12.
.0
0.
0
-358.
.8
0.0
-14.8
GENERAL MOTORS
12
34.
, 1
41.
,3
54.
,7
20.
.2
0.
,5
10.
6
-47.
.9
40. 7
-9.5
IMPORTS
1
28.
,7
0.
.0
39.
,3
0.
.0
-5.
.0
0.
0
-6.
.6
0.0
-2.7
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973
1974
1975
0
0
15
30.4
37.8
50.8
20.3
1.5
10.2
-62. 1
91.3
-9.5
9.3
*VEHICLE TYPE











AUTOMOBILE
TRUCK
15
0
30.4
37.8
50.8
20.3
1.5
10.2
-62.1
91.3
-9.5
9.3
*VEHICLE OWNER











GSA
PRIVATE OWNER
0
15
30.4
37.8
50.8
20.3
1.5
10.2
-62.1
91.3
-9.5
9.3
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
4
10
1
0
0.3
42.6
28.7
61.3
20.0
0.0
40.4
56.2
39.3
21.9
19.6
0.0
11.9
-2.0
-5.0
9.3
8.2
0.0
-121.3
-43.9
-6.6
173. 1
26.8
0.0
-15.4
-7.8
-2.7
11.4
8.2
0.0
*DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
2
0
11
2
-26.7
36.7
52.6
78.2
23.7
18.7
32.7
51.4
65.8
9.3
21.3
3.4
9.7
-0.9
6.2
20.8
8.7
5.8
-73.9
-68.4
-15.6
95.1
100.9
30.1
-17.0
-7.8
-11.4
20.2
7.4
9.9
*INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
2
11
1
-82.0
15.3
42.5
39.3
0.0
18.8
22.1
0.0
26.2
43.1
53.3
63.5
0.0
5.5
21.9
0.0
24.4
3.5
-1.8
10.3
0.0
12.0
7.7
0.0
-141.2
-182.7
-35.2
-36.8
0.0
249.0
32.9
0.0
-31.3
-8.7
-6.9
-18.4
0.0
8.5
7.1
0.0
ALL VEHICLES
15
30.4
37.8
50.8
20. 3
1.5
10.2
-62. 1
91.3
-9.5
9.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-38

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
3.11
0.0
38.58
0.0
727.6
0.0
3.49
0.00
11.1
0.0
FORD MOTOR CO.
1
1.09
0.0
10. 15
0.0
645.2
0.0
2.94
0.00
13.4
0.0
GENERAL MOTORS
12
1.84
0.5
38.29
17.2
615.9
86.2
1.60
.60
13.3
2.1
IMPORTS
1
2.20
0.0
63.77
0.0
355.4
0.0
1.21
0.00
19.2
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
*VEHICLE TYPE
AUTOMOBILE	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
TRUCK	0
* VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 1.89 0.9 19.38 13.2 644.7 146.2 2.55 1.09 13.6 3.6
CNV/NO A.PMP	10 1.87 0.5 43.07 14.4 618.5 55.3 1.54 .49 12.9 1.1
A.PMP/NO CNV	1 2.20 0.0 63.77 0.0 355.4 0.0 1.21 0.00 19.2 0.0
NO CNV/NO APMP
*DISPLACEMENT
LESS THAN 151	2 1.98 0.3 40.52 32.9 397.2 59.1 1.09 .16 19.0 0.3
151 - 250
251 - 350	11 1.99 0.6 41.88 15.4 630.6 62.1 1.82 .84 12.7 1.2
MORE THAN 350	2 1.31 0.4 15.15 5.1 694.0 103.0 2.31 .66 12.4 1.7
*1NERT1A WEIGHT
4
1.89
0.9
10
1.87
0.5
1
2. 20
0.0
0


2
1.98
0.3
0


11
1.99
0.6
1800 - 2799
1
1.77
0.0
17.27
0.0
439.0
0.0
0.98
0.00
18.8
0.0
2800 - 3799
2
1.64
0.8
36.96
37.9
500.3
204.9
2.07
1.22
16.3
4.1
3800 - 4799
11
2.04
0.5
42.00
15.1
641.7
74.6
1.80
.82
12.5
1.2
4800 - 5799
1
1.02
0.0
18.78
0.0
621.2
0.0
1.84
0.00
13.6
0.0
ALL VEHICLES 15 1.90 0.6 38.13 18.3 607.9 107.6 1.79 .80 13.5 2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-39

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)
# OF HC
VEH. MEAN !
*VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
0
1
1
0.65
0.24
12 -0.01
1 -0.15

CO

C02 NOX
MPG
;.d.
MEAN
S.D.
MEAN
S.D. MEAN S.D.
MEAN S.D.
0.0
9.45
0.0
63.2
0.0 -0.83 0.00
-1.0 0.0
0.0
6.66
0.0
49.5
0.0 -0.73 0.00
-1.1 0.0
0.4
9.87
14.0
31.0
28.7 -0.39 .38
-1.0 1.0
0.0
-5.44
0.0
-7.4
0.0 0.27 0.00
0.7 0.0
0
0
0
0
0
0
0
15
15
0
0
15
0.04 0.4 8.61 13.0
0.04 0.4 8.61 13.0
31.8 29.2 -0.40 .41 -0.9 1.0
31.8 29.2 -0.40 .41 -0.9 1.0
0.04 0.4 8.61 13.0 31.8 29.2 -0.40 .41 -0.9 1.0
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
^DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
*INERTIA WEIGHT
4	0.31
10 -0.04
1	-0.15
0
0.2
0.5
0.0
¦ 3.98
11.87
-5.44
6.3 44.7 45.7 -0.65 .24 -1.2 1.5
14.4 30.6 19.6 -0.36 .40 -0.9 0.6
0.0 -7.4 0.0 0.27 0.00 0.7 0.0
11
2
2 -0.01
0
0.01
0. 28
0.2 -0.29 7.3 39.4 66.2 -0.01 .40 -1.2 2.7
0.5
0.1
10.62
6.46
13.5
16.3
31.1
28.2
16.7 -0.46
68.0 -0.43
.40 -0.8
.45 -0.7
0.5
1.6
1800 - 2799
1
0.14
0.0
4.86
0.0
86,
.2
0.
0
-0.29
0.00
-3.
, 1
0.0
2800 - 3799
2
0.05
0.3
0.61
8.6
21.
, 1
40.
2
-0.23
.71
-0.
,2
1.3
3800 - 4799
11
0.00
0.5
9.55
14. 3
24,
.8
21.
5
-0.46
.40
-0.
,7
0.6
4800 - 5799
1
0.38
0.0
17.97
0.0
76,
.3
0.
0
-0.12
0.00
-1.
,9
0.0
ALL VEHICLES
15
0.04
0.4
8.61
13.0
31,
,8
29.
2
-0.40.
.41
-0.
,9
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-40

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP—TUNE-UP/PARA ADJ)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
17.3
0.0
19.7
0.0
8.0
0.0
-31.2
0.0
-10.0
0.0
FORD MOTOR CO.
1
18.0
0.0
39.6
0.0
7.1
0.0
-33.0
0.0
-9.1
0.0
GENERAL MOTORS
12
-1.9
24.3
12.7
34. 7
5.0
4.9
-33.1
31.4
-7.5
6.8
IMPORTS
1
-7. 3
0.0
-9.3
0.0
-2.1
0.0
18.2
0.0
3.5
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
15
0.4
22.7
13.5
32.2
4.9
4.8
-29.6
30.8
-7.0
6.8
*VEHICLE TYPE











AUTOMOBILE
15
0.4
22. 7
13.5
32.2
4.9
4.8
-29.6
30.8
-7.0
6.8
TRUCK
0










* VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
0.4
22.7
13.5
32.2
4.9
4.8
-29.6
30.8
-7.0
6.8
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
13.3
5.2
0.8
53.4
7.2
7.8
-35.8
4.8
-8.9
9.6
CNV/NO A.PMP
10
-4.0
26.2
20.9
21.7
4.7
2.8
-31.9
34.5
-7.4
5.2
A.PMP/NO CNV
1
-7.3
0.0
-9.3
0.0
-2.1
0.0
18.2
0.0
3.5
0.0
NO CNV/NO APMP
0










*DISPLACEMENT











LESS THAN 151
2
0.0
10.4
6.3
22. 1
7.1
13.1
-11.9
42.6
-8.2
16.6
151 - 250
0










251 - 350
11
-2.9
24.8
20.0
19.5
4.6
2.2
-34.2
31.7
-7.0
4.1
MORE THAN 350
2
18.8
11.7
-14.7
89.9
4.1
9.6
-22.0
21.2
' -6.4
13.9
*INERTIA WEIGHT










1800 - 2799
1
7.3
0.0
22.0
0.0
16.4
0.0
-42.0
0.0
-20.0
0.0
2800 - 3799
2
5.4
17.9
15. 1
34.6
2.5
6.5
-7.4
36.3
-2.8
8.9
3800 - 4799
11
-3.6
24.2
9.2
34.3
3.7
2.9
-34.5
31.7
-5.8
5.1
4800 - 5799
1
27.1
0.0
48.9
0.0
10.9
0.0
-7.0
0.0
-16.2
0.0
ALL VEHICLES
15
0.4
22.7
13.5
32.2
4.9
4.8
-29.6
30.8
-7.0
6.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 800H
H-41

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0










CHRYSLER
1
2.27
0.0
32.30
0.0
600. 2
0.0
2.76
0.00
13.5
0.0
FORD MOTOR CO.
1
0.98
0.0
6.27
0.0
617.8
0.0
3.90
0.00
14.1
0.0
GENERAL MOTORS
12
1.27
0.6
25.16
15.4
628.3
86.6
1.84
.29
13.5
2.4
IMPORTS
1
1.22
0.0
25.69
0.0
356.0
0.0
1.93
0.00
22.2
0.0
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 1.31 0.6 24.41 14.7 607.5 103.9 2.04 .62 14.1 3.1
*VEHICLE TYPE
AUTOMOBILE	15 1.31 0.6 24.41 14.7 607.5 103.9 2.04 .62 14.1 3.1
TRUCK 0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 1.31 0.6-24.41 14.7 607.5 103.9 2.04 .62 14.1 3.1
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 1.39 0.8 13.86 12.8 595.7 143.2 . 2.65 .95 14.*9 3.9
CNV/NO A.PMP	10 1.29 0.6 28.50 14.6 637.4 43.1 1.81 .27 13.0 0.8
4
1.39
0.8
13.86
12.8
595.7
143.2 ¦
2.65
.95
14.9
10
1. 29
0.6
28.50
14.6
637.4
43. 1
1.81
.27
13.0
1
0
1.22
0.0
25.69
0.0
356.0
0.0
1.93
0.00
22.2
A.PMP/NO CNV 1 1.22 0.0 25.69 0.0 356.0 0.0 1.93 0.00 22.2 0.0
NO CNV/NO APMP
^DISPLACEMENT
LESS THAN
151
2
1.52
0.4
19. 13
9.3
382.1
36.9
1.78
.21
21.3
1.2
151 - .250

0










251 - 350

11
1.39
0.7
27.81
15.2
631.7
42.5
2.08
.71
13.1
0.9
MORE THAN
350
2
0.71
0. 3
10.99
9.5
699.9
80.0
2.06
.34
12.4
1.1
*INERTIA WEIGHT
1800 - 2799
1
1.82
0.0
12.58
0.0
408.2
0.0
1.64
0.00
20.5
0.0
2800 - 3799
2
1.10
0.2
15.98
13.7
486.9
185.1
2.91
1.39
18.1
5.7
3800 - 4799
11
1 .34
0.7
27.63
15.4
644.3
56.3
1.94
.40
12.9
0.9
4800 - 5799
1
0.91
0.0
17.68
0.0
643.4
0.0
1.82
0.00
13.2
0.0
ALL VEHICLES
15
1.31
0.6
24.41
14.7
607.5
103.9
2.04
.62
14.1
3.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-42

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER







AMER. MOTORS
0








CHRYSLER
1
1.49
0.0
15.73
0.0
190.6
0.0 -0.10
0.00 -3.4
0.0
FORD MOTOR CO.
1
0.35
0.0
10.54
0.0
76.9
0.0 -1.69
0.00 -1.8
0.0
GENERAL MOTORS
12
0.56
0.6
23.00
13.7
18.7
49.6 -0.63
.37 -1.2
1.4
IMPORTS
1
0.83
0.0
32.64
0.0
-8.0
0.0 -0.45
0.00 -2.3
0.0
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
15
0.63
0.6
22.33
13.0
32.2
64.3 -0.65
.46 -1.5
1.4
*VEHICLE TYPE









AUTOMOBILE
15
0.63
0.6
22.33
13.0
32.2
64.3 -0.65
.46 -1.5
1.4
TRUCK
0








*VEHICLE OWNER









GSA
0








PRIVATE OWNER
15
0.63
0. 6
22.33
13.0
32.2
64.3 -0.65
.46 -1.5
1.4
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
4
0.80
0. 7
9.49
5.6
93.8
83.4 -0.75
.72 -2.5
2.1
CNV/NO A.PMP
10
0.54
0.6
26.43
12.2
11.7
42.3 -0.63
.37 -1.0
0.8
A.PMP/NO CNV
1
0.83,
0.0
32.64
0.0
-8.0
0.0 -0.45
0.00 -2.3
0.0
NO CNV/NO APMP	0
-DISPLACEMENT
LESS THAN .151	2 0.46 0.5 21.10 16.3 54.5 88.4-0.70 .35-3.5 1.8
151 - 250	0
251 - 350
11
0.61
0.6
24.69
12.7
30.0
68.5 -0.73
.48 -1.2
1.1
MORE THAN 350
2
0.89
0.6
10.61
12.0
22.3
45.0 -0.18
.12 -0.7
1.1
*INERTIA WEIGHT









1800 - 2799
1
0.09
0.0
9.55
0.0
117.0
0.0 -0.95
0.00 -4.8
0.0
2800 - 3799
2
0.59
0.3
21.59
15.6
34.4
60.0 -1.07
.88 -2.1
0.3
3800 - 4799
11
0.70
0. 6
23.92
13.8
22.2
67.5 -0.60
.37 -1.0
1.1
4800 - 5799
1
0.49
0.0
19.07
0.0
54.1
0.0 -0.10
0.00 -1.5
0.0
ALL VEHICLES
15
0.63
0.6
22.33
13.0
32.2
64.3 -0.65
.46 -1.5
1.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-43

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
0









CHRYSLER
1
39.6
0.0
32.8
0.0
24. 1
0.0
-3.8
0.0 -33.4
0.0
FORD MOTOR CO.
1
26.3
0.0
62.7
0.0
11.1
0.0
-76.5
0.0 -15.0
0.0
GENERAL MOTORS
12
30.6
29.4
46.8
18.2
3.0
8.5
-63.4
46.1 -9.3
9.4
IMPORTS
1
40.5
0.0
56.0
0.0
-2.3
0.0
-30.4
0.0 -11.5
0.0
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
0









1974
0









1975
15
31.6
26.3
47.5
17.2
4.6
9.7
-58. 1
44.5 -11.5
10.4
*VEHICLE TYPE










AUTOMOBILE
15
31.6
26.3
47.5
17.2
4.6
9.7
-58. 1
44.5 -11.5
10.4
TRUCK
0









*VEHICLE OWNER










GSA
0









PRIVATE OWNER
15
31.6
26.3
47.5
17.2
4.6
9.7
-58. 1
44.5 -11.5
10.4
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
4
35.6
28.0
43.0
14.0
14.0
11.7
-57.8
62.3 -19.7
15.6
CNV/NO A.PMP
10
29.1
28.2
48.5
19.4
1.5
6.6
-60.9
41.2 -8.2
6.9
A.PMP/NO CNV
1
40.5
0.0
56.0
0.0
-2.3
0.0
-30. 4
0.0 -11.5
0.0
NO CNV/NO APMP
0









*DISPLACEMENT










LESS THAN 151
2
22.6
25.3
49.6
9. 1
10.0
17.4
-84.0
75.9 -21.0
13.5
151 - 250
0









251 - 350
11
29.3
26.9
48.0
19.6
3.8
9.4
-62.2
39.6 -10.7
10.1
MORE THAN 350
2
53.3
25.9
42.6
13. 1
3.2
6.4
-9.6
5.3 -6.2
9.2
*INERTIA WEIGHT









1800 - 2799
1
4.7
0.0
43.2
0.0
22.3
0.0
-137.7
0.0 -30.5
0.0
2800 - 3799
2
33.4
10.0
59.3
4.8
4.4
9.5
-53.4
32.6 -13.2
2.5
3800 - 4799
11
33.4
29.7
45.4
19.4
2.7
9.2
-56.4
41.9 -9.3
10.5
4800 - 5799
1
35.0
0.0
51.9
0.0
7.8
0.0
-5.8
0.0 -12.8
0.0
ALL VEHICLES
15
31.6
26.3
47.5
17.2
4.6
9.7
-58.1
44.5 -11.5
10.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-44

-------
EXHAUST EMISSIONS AMIgMf^AKD/OR
(tuJ
-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(TUNE-UP/PARA ADJ—TUNEUP/PARADJ/DEV)

# OF
HC

CO

CO2 NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
MEAN S
*VEHICLE MANUFACTURER







AMER. MOTORS
0








CHRYSLER
1
0.84
0.0
6.28
0.0
127.4
0.0 0.73
0.00
-2.4 i
FORD MOTOR CO.
1
0.11
0.0
3.88
0.0
27.4
0.0 -0.96
0.00
-0.7 i
GENERAL MOTORS
12
0.57
0.7
13. 13
14.6
-12.3
37.5 -0.24
.45
-0.2
IMPORTS
1
0.98
0.0
38.08
0.0
-0.6
0.0 -0.72
0.00
-3.0 i
*MODEL YEAR
4
0.50
0.6
10
0.58
0.8
1
0.98
0.0
0


2
0.47
0.7
0


11
0.61
0.7
2
0.60
0.7
1
-0.05
0.0
2
0.54
0.6
11
0.70
0.7
1
0.11
0.0
0.0
0.0
1.0
0.0
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	15 0.59 0.7 13.72 14.9 0.4 49.5 -0.26 .53 -0.6 1.3
*VEHICLE TYPE
AUTOMOBILE	15 0.59 0.7 13.72 14.9 0.4 49.5 -0.26 .53 -0.6 1.3
TRUCK 0
*VEHICLE OWNER
GSA	0
PRIVATE OWNER	15 0.59 0.7 13.72 14.9 0.4 49.5 -0.26 .53 -0.6 1.3
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	4 0.50 0.6 5.52 1.5 49.0 53.0 -0.10 .83 -1.3 0.9
CNV/NO A.PMP	10 0.58 0.8 14.57 15.7 -18.9 37.5-0.27 .41-0.1 1.0
A.PMP/NO CNV 1 0.98 0.0 38.08 0.0 -0.6 0.0 -0.72 0.00 -3.0 0.0
NO CNV/NO APMP
~DISPLACEMENT
LESS THAN 151 2 0.47 0.7 21.38 23.6 15.1 22.2 -0.69 .04 -2.3 0.9
151' - 250
251 - 350	11	0.61	0. 7	14.07	14.9	-1. 1	57. 2 -0.27	.54	-0.4	1.2
MORE THAN 350	2	0.60	0.7	4.16	4.3	-5.9	23.1 0.25	.33	0.0	0.5
*INERTIA WEIGHT
1800 - 2799	1	-0.05	0.0	4.69	0.0	30.8	0.0 -0.66	0.00	-1.7	0.0
2800 - 3799	2	0.54	0.6	20.98	24.2	13.4	19.8 -0.84	.17	-1.8	1.6
3800 - 4799	11	0.70	0.7	14.37	14.7	-2.7	56.6 -0.14	.53	-0.3	1.2
4800 - 5799	1	0.11	0.0	1.10	0-0	-22.2	0-0 0.02	0-00	0.4	0.0
ALL VEHICLES 15 0.59 0.7 13.72 14.9 0.4 49.5 -0.26 .53 -0.6 1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-46

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(TUNE-UP/PARA ADJ—TUNEUP/PARADJ/DEV)
1! OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO 2
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
0










CHRYSLER
1
27.0
0.0
16.3
0.0
17.5
0.0
20.9
0.0
-21.3
0.0
FORD MOTOR CO.
1
10. 1
0.0
38.2
0.0
4.2
0.0
-32.7
0.0
-5.4
0.0
GENERAL MOTORS
12
28.5
33.1
32.8
28.8
-2.1
6.4
-25.1
34.0
-1.8
7.5
IMPORTS
1
44. 5
0.0
59.7
0.0
-0.2
0.0
-59.5
0.0
-15.5
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










19 7 A
0










1975
15
28.2
30. 1
33.9
26.9
-0.3
7.7
-24.9
33.9
-4.3
8.9
*VEHICLE TYPE











AUTOMOBILE
15
28.2
30.1
33.9
26.9
-0.3
7.7
-24.9
33.9
-4.3
8.9
TRUCK
0










*VEHICLE OWNER











GSA
0










PRIVATE OWNER
15
28.2
30.1
33.9
26.9
-0.3
7.7
-24.9
33.9
-4.3
8.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
4
25.6
31.0
36. 1
19.8
7.5
7.0
-15.5
42.4
-9.7
8. 1
CNV/NO A.PMP
10
27.6
32.5
30.4
30. 1
-3.4
6.2
-25.2
31.9
' -1.0
7.9
A.PMP/NO CNV
1
44.5
0.0
59.7
0.0
-0.2
0.0
-59.5
0.0
-15.5
0.0
NO CNV/NO APMP
0










*DISPLACEMENT











LESS THAN 151
2
20.9
33.5
43.4
23.0
3.4
5.1
-63.4
5. 5
-12.2
4.8
151 - 250
0










251 - 350
11
27.5
30.9
32.1
27.9
-0.8
8.7
-24.0
32.6
-3.6
9.5
MORE THAN 350
2
39.6
40.7
34.2
40.1
-1.1
3.5
9.2
11.4
-0.2
4.4
*INERTIA WEIGHT










1800 - 2799
1
-2.8
0.0
27.2
0.0
7.0
0.0
-67.3
0.0
-8.8
0.0
2800 - 3799
2
27.3
24.4
49.0
15.2
2.0
3.1
-46. 1
19.0
-10.5
7.2
3800 - 4799
11
32.8
32.5
34.3
29.4
-1.0
8.6
-19.5
34.7
-3.4
9.5
4800 - 5799
1
10.8
0.0
5.9
0.0
-3.6
0.0
1.1
0.0
2.9
0.0
ALL VEHICLES
15
28.2
30.1
33.9
26.9
-0.3
7.7
-24.9
33.9
-4.3
8.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-47

-------
1975 VEHICLES
DATA SET 4
20 VEHICLES
H-48

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
2.25
0.0
68.40
0.0
417.9
0.0
2.01
0.00
16.7
0.0
CHRYSLER
1
2.68
0.0
40.41
0.0
659.7
0.0
3.03
0.00
12.1
0.0
FORD MOTOR CO.
1
1.00
0.0
11.83
0.0
702.0
0.0
0.85
0.00
12.3
0.0
GENERAL MOTORS
15
2. 17
0.7
54.64
28.9
612.2
89.9
1.37
.42
12.8
2.0
IMPORTS
2
1.19
0.7
26.53
22.3
347.9
12.5
1.61
.28
22.6
1.4
~MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 2.OA 0.7 49.66 28.6 582.9 122.2 1.48 .55 13.9 3.5
*VEHICLE TYPE
AUTOMOBILE
TRUCK
18
2
2.02
2.26
0.7
1.1
51.56
32.55
28.8
27.0
580.7
602.9
128.1
63.6
1.46
1.72
.58
. 16
14.0
13.4
3.7
0.4
*VEHICLE OWNER











GSA
PRIVATE OWNER
1
19
3.03
1.99
0.0
0.7
51.64
49.56
0.0
29.4
557 .9
584.2
0.0
125.4
1.61
1.48
0.00
.57
13.7
14.0
0.0
3.6
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
5
12
2
1
1.53
2.38
1.19
2.25
0.7
0.6
0.7
0.0
19.26
64.62
26.53
68.40
12.0
22.8
22.3
0.0
664.5
601.8
347.9
417.9
85.2
85.0
12.5
0.0
1.77
1.30
1.61
2.01
1.01
.22
.28
0.00
12.8
12.7
22.6
16.7
1.7
2.0
1.4
0.0
~DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
3
2
13
2
1.13
2.98
2.19
1.49
0.5
0.1
0.6
0.0
23.37
54.53
57.85
30.99
16.7
4.1
29.8
24.6
411.9
473.9
614.2
745. 1
111.1
118.8
74.5
39.2
1.30
1.41
1.48
1.88
.57
.28
.58
.78
20.3
15.9
12.6
11.1
4.2
3.1
1.5
0.0
~INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
13
1
1.00
1.71
2.29
1.50
0.0
0.9
0. 6
0.0
17.04
38.14
56.70
48.41
0.0
26.2
29.5
0.0
539.8
441.1
630.4
717.4.
0.0
149.0
61.4
0.0
0.68
1.46
1.57
1.33
0.00
.46
.59
0.00
15.6
18.5
12.3
11.1
0.0
4.4
1.0
0.0
ALL VEHICLES
20
2.04
0.7
49.66
28.6
582.9
122.2
1.48
.55
13.9
3.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-49

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP)
if OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO 2
MEAN S.D.
*VEHICLE MANUFACTURER
NOX	MPG
MEAN S.D. MEAN S.D.
AMER. MOTORS
1
2.13
0.0
60.40
0.0
413.7
0.0
1.35
0.00
17.2
0.0
CHRYSLER
1
3.76
0.0
48.03
0.0
790.8
0.0
2.66
0.00
10.1
0.0
FORD MOTOR CO.
1
1.33
0.0
16.81
0.0
694.7
0.0
2.21
0.00
12.2
0.0
GENERAL MOTORS
15
1.94
0.5
45.44
21.3
621.5
98.4
1.28
.42
13.0
2.1
IMPORTS
2
1.32
1.0
33.49
35.1
348.1
0.5
1.47
.01
22.1
3.2
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20
*VEHICLE TYPE
AUTOMOBILE	18
TRUCK	2
*VEHICLE OWNER
GSA	1
PRIVATE OWNER	19
1.95 0.7 43.69 21.6 595.9 135.5 1.42 .51 13.9 3.6
1.95
1.94
2.56
1.91
0.7
0.9
46.04
22.55
0.0 29.50
0.7 44.44
*CONTROL OPTIONS(CONVERTER,AIR	PUMP)
CNV/A.PMP	5 2.03 1.0	21.81
CNV/NO A.PMP 12 2.00 0.6	53.12
A.PMP/NO CNV 2 1.32 1.0	33.49
NO CNV/NO APMP 1 2.13 0.0	60.40
*DISPLACEMENT
21.4 596.1 141.5
9.8 593.9 92.2
0.0 528.7 0.0
21.9 599.4 138.3
15.7	683.4	101.6
15.6	615.9	99.4
35.1	348.1	0.5
0.0	413.7	0.0
1.38
1.77
.51 13.9
.52 14.1
2.14 0.00 15.2
1.38 .49 13.8
1.80	.77	12.5
1.26	.37	12.9
1.47	.01	22.1
1.35	0.00	17.2
3.8
1.6
0.0
3.7
2.0
2.2
3.2
0.0
LESS THAN 151
3
1.52
0.8
29.70
25.7
407.2
102.2
1.21
.45
20.0
4.4
151 - 250
2
2.85
0.4
44.01
20.5
449.8
111.5
1.69
.64
17.0
2.5
251 - 350
13
1.96
0.7
50.27
19.4
642.5
93.4
1.36
.53
12.4
1.7
MORE THAN 350
2
1.60
0.3
21.61
21.4
722.2
35.0
1.88
.22
11.7
0.0
*INERTIA WEIGHT











1800 - 2799
1
1.91
0.0
22.13
0.0
525.2
0.0
0.69
0.00
15.7
0.0
2800 - 3799
5
1.85
1.0
40.54
25.6
435.1
147.5
1.55
.38
18.5
4.4
3800 - 4799
13
2.03
0.7
47.09
21.5
655.3
77.2
1.40
.55
12.2
1.3
4800 - 5799
1
1.40
0.0
36.75
0.0
697.5
0.0
1.72
0.00
11.7
0.0
ALL VEHICLES
20 1.95 0.7 43.69 21.6 595.9 135.5 1.42 .51 13.9 3.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-50

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
197 5 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)

i? OF
HC

CO

CO 2
NOX
MPG

VEH.
MEAN
in
o
•
MEAN
S.D.
MEAN
S.D.
MEAN S.D.
MEAN S.D.
~VEHICLE MANUFACTURER







AtlER. MOTORS
1
2.13
0.0
60.40
0.0
413.7
0.0
1.35 0.00
17.2 0.0
CHRYSLER
1
3.76
0.0
48.03
0.0
790.8
0.0
2.66 0.00
10.1 0.0
FORD MOTOR CO.
1
1.33
0.0
16.81
0.0
694.7
0.0
2.21 0.00
12.2 0.0
GENERAL MOTORS
15
1.94
0.5
45.44
21.3
621.5
98.4
1.28 .42
13.0 2.1
IMPORTS
2
1.32
1.0
33.49
35.1
348.1
0.5
1.47 .01
22.1 3.2
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 1.95 0.7 43.69 21.6 595.9 135.5 1.42 .51 13.9 3.6
*VEHICLE TYPE
AUTOMOBILE	18 1.95 0.7 46.04 21.4 596.1 141.5 1.38 .51 13.9 3.8
TRUCK	2 1.94 0.9 22.55 9.8 593.9 92.2 1.77 .52 14.1 1.6
*VEHICLE OWNER
GSA
PRIVATE OWNER
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
*DISPLACEMENT
1 2.56 0.0
29.50
0.0
528.7
0.0
2.14
0.00
15.2
0.0
19 1.91 0.7
44.44
21.9
599.4
138.3
1.38
.49
13.8
3.7
(CONVERTER,AIR
PUMP)







5 2.03 1.0
21.81
15.7
683.4
101.6
1.80
.77
12.5
2.0
12 2.00 0.6
53.12
15.6
615.9
99.4
1.26
.37
12.9
2.2
2 1.32 1.0
33.49
35.1
348.1
0.5
1.47
.01
22.1
3.2
1 2.13 0.0
60.40
0.0
413.7
0.0
1.35
0.00
17.2
0.0
LESS THAN
151
3
1.52
0.8
29.70
25.7
407.2
102.2
1.21
.45
20.0
4.4
151 - 250

2
2.85
0.4
44.01
20.5
449.8
111.5
1.69
.64
17.0
2.5
251 - 350

13
1.96
0.7
50.27
19.4
642.5
93.4
1.36
.53
12.4
1.7
MORE THAN
350
2
1.60
0.3
21.61
21.4
722.2
35.0
1.88
.22
11.7
0.0
*INERTIA WEIGHT
1800-2799	1	1.91	0.0	22.13	0.0	525.2	0.0	0.69 0.00 15.7	0.0
2800- 3799	5	1.85	1.0	40.54	25.6	435.1	147.5	1.55 .38 18.5	4.4
3800 - 4799	13	2.03	0.7	47.09	21.5	655.3	77.2	1.40 .55 12.2	1.3
4800 - 5799	1	1.40	0.0	36.75	0.0	697.5	0.0	1.72 0.00 11.7	0.0
ALL VEHICLES 20 1.95 0.7 43.69 21.6 595.9 135.5 1.42 .51 13.9 3.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-51

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE— MANU. TUNE-UP)
§ OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.12
0.0
8.00
0.0
4.2
0.0
•0.66
0.00
-0.6
0.0
CHRYSLER
1
-1.08
0.0
-7.62
0.0
-131.1
0.0
0.37
0.00
2.0
0.0
FORD MOTOR CO.
1
-0.33
0.0
-4.98
0.0
7.3
0.0
-1.36
0.00
0.0
0.0
GENERAL MOTORS
15
0.23
0.5
9.20
21.2
-9.3
34.9
0.09
.31
-0.1
0.7
IMPORTS
2
-0.14
0.3
-6.96
12.8
-0.3
12.2
0.15
.26
0.5
1.7
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
0.10
0.5
5.97
19.5
-13.0
41.3
0.06
.45
0.0
0.9
~VEHICLE TYPE











AUTOMOBILE
18
0.07
0.6
5.52
20.2
-15.4
42.3
0.08
.45
0.1
0.9
TRUCK
2
0.32
0.2
10.00
17.2
9.0
28.6
-0.05
.68
-0.6
1.3
*VEHICLE OWNER











GSA
1
0.47
0.0
22. 14
0.0
29.2
0.0
-0.53
0.00
-1.5
0.0
PRIVATE OWNER
19
0.08
0.6
5.12
19.7
-15.2
41. 1
0.10
.44
0.1
0.8
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
-0.49
0.5
-2.55
5.7
-18.9
64.2
-0.03
.76
0.3
1.0
CNV/NO A.PMP
12
0.38
0.4
11.51
23.1
-14.1
36.8
0.04
.31
-0.1
0.8
A.PMP/NO CNV
2
-0. 14
0.3
-6.96
12.8
-0.3
12.2
0.15
.26
0.5
1.7
NO CNV/NO APMP
1
0. 12
0.0
8.00
0.0
4.2
0.0
0. 66
0.00
-0.6
0.0
~DISPLACEMENT











LESS THAN 151
3
-0.39
0.5
-6.34
9.1
4.7
12.2
0.09
.21
0.3
1.3
151 - 250
2
0.13
0.5
10.52
16.4
24.0
7.3
-0.28
.36
-1.1
0.6
251 - 350
13
0. 24
0.6
7.59
22.8
-28.3
43.5
0.12
.51
0.2
0.8
MORE THAN 350
2
-0.11
0.3
9.38
3.2
22.9
4.2
0.01
.57
-0.5
0.0
~INERTIA WEIGHT











1800 - 2799
1
-0.91
0.0
-5.09
0.0
14.6
0.0
-0.01
0.00
-0.1
0.0
2800 - 3799
5
-0.14
0.2
-2.40
- 9.0
6.0
10.0
-0.09
.77
-0.0
1.0
3800 - 4799
13
0.26
0.6
9.60
22.8
-24.9
46.9
0.16
.30
0.1
0.9
4800 - 5799
1
0.10
0.0
11.66
0.0
19.9
0.0
-0.39
0.00
-0.6
0.0
ALL VEHICLES
20
0.10
0.5
. 5.97
19.5
-13.0
41. 3
0.06
.45
0.0
0.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-52

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—MANU. TUNE-UP)
9
OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN-
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
5.3
0.0
11.7
0.0
1.0
0.0
32.8
0.0
-3.3
0.0
CHRYSLER
1
-40.3
0.0
-18.9
0.0
-19.9
0.0
12.2
0.0
16.7
0.0
FORD MOTOR CO.
1
-33.0
0.0
-42.1
0.0
1.0
0.0
-160.0
0.0
0.2
0.0
GENERAL MOTORS
15
4.9
31.2
11.8
26.4
-1.4
5.8
4.9
20.7
-1.0
5.7
IMPORTS
2
-4.7
21.4
-9.2
40. 6
-0.1
3.5
7.7
14.9
2.3
7.9
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
-0.2
30. 1
5.5
00
-2.0
6.6
-1.3
42.0
0.1
6.6
*VEHICLE TYPE











AUTOMOBILE
18
-1.7
31.4
4.6
28.2
-2.4
6.8
-0.9
43.3
0.7
6.4
TRUCK
2
13.4
3.0
13.5.
41.5
1.8
4.9
-4.7
39.9
-4.6
9.4
*VEHICLE OWNER











GSA
1
15.5
0.0
42.9
0.0
5.2
0.0
-32.9
0.0
-11.3
0.0
PRIVATE OWNER
19
-1.0
30.7
3.5
27.8
-2.3
6.6
0.4
42.5
0.7
6.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
-34.8
37. 1
-10.9
36.8
-2.9
9.7
-21.8
77.8
2.7
8.2
CNV/NO A.PMP
12
14.5
15.3
14. 2
22.5
-2.1
6.2
2.9
22.2
-1.0
6.2
A.PMP/NO CNV
2
-4.7
21.4
-9.2
40.6
-0.1
3.5
7.7
14.9
2.3
7.9
NO CNV/NO APMP
1
5.3
0.0
11.7
0.0
1.0
0.0
32.8
0.0
-3.3
0.0
*DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
3
2
13
2
-33.5
4.2
7.9
-7.1
52.1
16.0
23.9
19.4
-16.1
20.5
3.1
38.2
31.1
31.7
25.7
19.9
0.8
5.0
-4.5
3.1
3.0
0.3
6.8
0.4
4.6
-17.3
0.6
-6.3
11.8
22.1
50.8
32.6
1.3
-7.4
1.8
-4.9
5.8
5.5
6.6
0.3
*1NERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
13
1
-91.0
-8.8
9.6
6.7
0.0
17.9
22.4
0.0
-29.9
-10.1
12.8
24.1
0.0
28.4
26.8
0.0
2.7
1.3
-4.0
2.8
0.0
2.7
7.4
0.0
-1.5
-22.7
9.1
-29.3
0.0
78.2
19.5
0.0
-0.6
-0.4
0.8
-5.0
0.0
4.9
7.6
0.0
ALL VEHICLES
20
-0.2
30.1
5.5
28.4
-2.0
6.6
-1.3
42.0
0.1
6.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
li—53

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
CHRYSLER
1
2.27
0.0
32.30
0.0 -
600.2
0.0
2.76
0.00
13.5
0.0
FORD MOTOR CO.
1
0.98
0.0
6.27
0.0
617.8
0.0
3.90
0.00
14.1
0.0
GENERAL MOTORS
15
1.45
0.7
25.26
15.6
603.6
101.2
2.00
.64
14.1
2.5
IMPORTS
2
0.96
0.4
15.42
14.5
345.3
15.1
1.98
.08
23.9
2.5
*MQDEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
1.41
0.7
22.94
15.1
571.0
120.8
2.23
.80
15.2
3.9
*VEHICLE TYPE











AUTOMOBILE
18
1.38
0.7
23.88
15.6
572.9
125.3
2.13
.71
15.2
4.1
TRUCK
2
1.64
0.1
14.42
3.9
554.2
99.6
3.07
1.49
15.4
2.5
*VEHICLE OWNER











GSA
1
1.74
0.0
17.20
0.0
483.8
0.0
4.13
0.00
17.2
0.0
PRIVATE OWNER
19
1.39
0.7
23.24
15.4
575.6
122.3
2.13
.69
15.1
4.0
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.43
0.7
13.42
11.1
601.5
124.7
2.52
.87
14.7
3.4
CNV/NO A.PMP
12
1.48
0.8
29.19
14.8
605.4
86.0
2.01
.71
13.8
2.0
A.PMP/NO CNV
2
0.96
0.4
15.42
14.5
345.3
15.1
1.98
.08
23.9
2.5
NO CNV/NO APMP
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
*DISPLACEMENT











LESS THAN 151
3
1.25
0.6
14.47
10.4
366.3
37.9
1.87
.21
22.8
2.7
151 - 250
2
2.44
1.0
32.63
21.8
445.2
54.6
3.01
1.58
17.6
0.6
251 - 350
13
1.40
0.6
25.24
15.2
617.8
61.9
2.21
.81
13.6
1.7
MORE THAN 350
2
0.71
0.3
10.99
9.5
699.9
80.0
2.06
.34
12.4
1.1
*INERTIA WEIGHT











1800 - 2799
1
1.82
0.0
12.58
0.0
408.2
0.0
1.64
0.00
20.5
0.0
2800 - 3799
5
1.48
1.0
19. 14
18. 1
434.5
113.0
2.72
1.05
19.7
4.4
3800 - 4799
13
1.39
0.6
25.60
15.0
630.5
67.9
2.11
.71
13.3
1.5
4800 - 5799
1
0.91
0.0
17.68
0.0
643.4
0.0
1.82
0.00
13.2
0.0
ALL VEHICLES
20
1.41
0.7
22.94
15.1
571.0
120.8
2.23
.80
15.2
3.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-54

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.89
0.0
57.88
0.0
-39.4
0.0 -1.81
0.00 -1.9
0.0
CHRYSLER
1
0.41
o.o
8.11
0.0
59.5
0.0 0.27
0.00 -1.4
0.0
FORD MOTOR CO.
1
0.02
0.0
5.56
0.0
84.2
0.0 -3.05
0.00 -1.8
0.0
GENERAL MOTORS
15
0.72
0.7
29.38
23.9
8.5
58.1 -0.63
.61 -1.2
1.5
IMPORTS
2
0.22
0.4
11.11
7.8
2.6
27.6 -0.37
.35 -1.3
1.1
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
20
0.63
0.7
26.72
23.4
11.9
55.5 -0.74
.84 -1.3
1.3
*VEHICLE TYPE









AUTOMOBILE
18
0.63
0.7
27.68
23.9
7.8
56.4 -0.67
.76 -1.2
1.3
TRUCK
2
0.62
0.9
18.13
23.1
48.7
35.9 -1.36
1.65 -2.0
2.1
*VEHICLE OWNER









GSA
1
1.29
0.0
34.44
0.0
74.1
0.0 -2.52
0.00 -3.5
0.0
PRIVATE OWNER
19
0.60
0.7
26.32
24.0
8.6
55.0 -0.65
.74 -1.2
1.2
^CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PHP
5
0.11
0.7
5.84
3.0
63.0
47.2 -0.76
1.37 -1.8
1.8
CNV/NO A.PMP
12
0.90
0.6
35.43
22.9
-3.6
52.3 -0.71
.62 -1.0
1.2
A.PMP/NO CNV
2
0.22
0.4
11.11
7.8
2.6
27.6 -0.37
.35 -1.3
1.1
NO CNV/NO APMP
1
0.89
0.0
57.88
0.0
-39.4
0.0 -1.81
0.00 -1.9
0.0
^DISPLACEMENT









LESS THAN 151
3
-0.12
0.7
8.90
6.7
45.6
77.0 -0.57
.42 -2.5
2.2
151 - 250
2
0.54
1.1
21.90
17.7
28.7
64.2 -1.60
1.31 -1.7
2.5
251 - 350
13
0.80
0.6
32.62
26.2
-3.6
51.2 -0.74
.86 -1.0
0.9
MORE THAN 350
2
0.78
0.3
19.99
15.2
45.2
40.7 -0.18
.45 -1.3
1.1
*INERTIA WEIGHT









1800 - 2799
1
-0.82
0.0
4.46
0.0
131.6
0.0 -0.96
0.00 -4.9
0.0
2800 - 3799
5
0.23
0.4
19.01
22.2
6.7
48.7 -1.25
1.18 -1.3
1.0
3800 - 4799
13
0.90
0. 6
31.10
24.8
-0.1
49.0 -0.55
.70 -1.0
1.1
4800 - 5799
1
0.59
0.0
30.73
0.0
74.0
0.0 -0.49
0.00 -2.1
0.0
ALL VEHICLES
20
0.63
0. 7
26.72
23.4
11.9
55.5 -0.74
.84 -1.3
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-55

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE—TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
39.6
0.0
84.6
0.0
-9.4
0.0
-90.0
0.0
-11.3
0.0
CHRYSLER
1
15.3
0.0
20. 1
0.0
9.0
0.0
8.9
0.0
-11.2
0.0
FORD MOTOR CO.
1
2.0
0.0
47.0
0.0
12.0
0.0
-358.8
0.0
-14.8
0.0
GENERAL MOTORS
15
29.5
39.3
50.2
23.1
1.3
10.1
-53.1
47.1
-9.5
10.4
IMPORTS
2
11.3
24.5
45.7
9.1
0.6
7.9
-25.1
26.2
-5.8
4.4
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
26.1
35.3
49.8
22.6
1.6
9.7
-64.3
82.5
-9.6
9.2
*VEHICLE TYPE











AUTOMOBILE
18
26.8
36.4
50.9
21.8
0.8
9.8
-62.2
83.3
-9.0
8.8
TRUCK
2
19.6
32.5
40.1
37.6
8.4
6.8
-83.5
103.3
-14.8
15.3
* VEHICLE OWNER











GSA
1
42.6
0.0
66.7
0.0
13.3
0.0
-156.5
0.0
-25.7
0.0
PRIVATE OWNER
19
25.2
36.1
48.9
22.9
1.0
9.5
-59.5
81.8
-8.8
8.6
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
-0.5
53.1
35.0
22.4
10.2
8.9
-99.1
157.9
-13.1
11.1
CNV/NO A.PMP
12
38.5
23.0
53.7
21.5
-0.9
8.7
-54.2
40.4
-8.6
9.5
A.PMP/NO CNV
2
11.3
24.5
45.7
9.1
0.6
7.9
-25. 1
26.2
-5.8
4.4
NO CNV/NO APMP
1
39.6
0.0
84.6
0.0
-9.4
0.0
-90.0
0.0
-11.3
0.0
~DISPLACEMENT











LESS THAN 151
3
-19.8
56.6
39.2
13.0
8. 5
14.8
-63.8
69.5
-14.3
15.1
151 - 250
2
17.9
34.9
41.5
35.6
4.5
12.4
-105.7
71.8
-12.6
18.5
251 - 350
13
33.8
24.3
51.1
24.3
-1.2
8.4
-65.6
93.8
-7.8
7.0
MORE THAN 350
2
52.6
18.7
65.8
3.4
6.2
5.8
-15.6
30.1
-11.4
9.9
~INERTIA WEIGHT










1800 - 2799
1
-82.0
0.0
26.2
0.0
24.4
0.0
-141.2
0.0
-31.3
0.0
2800 - 3799
5
11.5
21.3
47.9
24.7
-0.1
8.9
-110.8
141.8
-7.4
6.3
3800 - 4799
13
39.0
23.8
51.3
23.2
-0.2
8.2
-42.6
46.1
-8.1
8.4
4800 - 5799
1
39.3
0.0
63.5
0.0
10.3
0.0
-36.8
0.0
-18.4
0.0
ALL VEHICLES
20
26.1
35. 3
49.8
22.6
1.6
9.7
-64.3
82.5
-9.6
9.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-56

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
// OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
CHRYSLER
1
2.27
0.0
32.30
0.0
600.2
0.0
2.76
0.00
13.5
0.0
FORD MOTOR CO.
1
0.98
0.0
6.27
0.0
617.8
0.0
3.90
0.00
14.1
0.0
GENERAL MOTORS
15
1.45
0.7
25.26
15.6
603.6
101.2
2.00
.64
14.1
2.5
IMPORTS
2
0.96
0.4
15.42
14.5
345.3
15. 1
1.98
..08
23.9
2.5
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	20 1.41 0.7 22.94 15.1 571.0 120.8 2.23 .80 15.2 3.9
*VEHICLE TYPE
AUTOMOBILE	18 1.38 0.7 23.88 15.6 572.9 125.3 2.13 .71 15.2 4.1
TRUCK	2 1.64 0.1 14.42 3.9 554.2 99.6 3.07 1.49 15.4 2.5
*VEHICLE OWNER
GSA
PRIVATE OWNER
CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
*DISPLACEMENT
1 1.74 0.0
17.20
0.0
483.8
0.0
4.13
0.00
17.2
0.0
19 1.39 0.7
23.24
15.4
575.6
122.3
2.13
.69
15.1
4.0
(CONVERTER,AIR
PUMP)







5 1.43 0.7
13.42
11.1
601.5
124.7
2.52
-.87
14.7
3.4
12 1.48 0.8
29.19
14.8
605.4
86.0
2.01
.71
13.8
2.0
2 0.96 0.4
15.42
14.5
345.3
15. 1
1.98
.08
23.9
2.5
1 1.36 0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
LESS THAN
151
3
1.25
0.6
14.47
10.4
366.3
37.9
1.87
.21
22.8
2.7
151 - 250

2
2.44
1.0
32.63
21.8
445.2
54.6
3.01
1.58
17.6
0.6
251 - 350

13
1.40
0.6
25.24
15.2
617.8
61.9
2.21
.81
13.6
1.7
MORE THAN
350
2
0. 71
0.3
10.99
9.5
699.9
80.0
2.06
.34
12.4
1.1
*INERTIA WEIGHT
1800 - 2799
1
1.82
0.0
12.58
0.0
408.2
0.0
1.64
0.00
20.5
0.0
2800 - 3799
5
1.48
1.0
19.14
18.1
434.5
113.0
2.72
1.05
19.7
4.4
3800 - 4799
13
1.39
0.6
25.60
15.0
630.5
67.9
2.11
.71
13.3
1.5
4800 - 5799
1
0.91
0.0
17.68
0.0
643.4
0.0
1.82
0.00
13.2
0.0
ALL VEHICLES
20
1.41
0.7
22.94
15.1
571.0
120.8
2.23
.80
15.2
3.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-57

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.77
0.0
49.88
0.0
-43.6
0.0 -2.47
0.00
-1.3
0.0
CHRYSLER
1
1.49
0.0
15.73
0.0
190.6
0.0 -0.10
0.00
-3.4
0.0
FORD MOTOR CO.
1
0.35
0.0
10.54
0.0
76.9
0.0 -1.69
0.00
-1.8
0.0
GENERAL MOTORS
15
0.49
0.6
20.18
13.6
17.9
47.0 -0.72
.48
-1.1
1.3
IMPORTS
2
0.36
0.7
18.07
20.6
2.8
15.3 -0.52
.09
-1.8
0.7
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
0









1974
0









1975
20
0.54
0.6
20.75
14.5
24.9^
00
0
1
cr\
m
.63
-1.3
1.3
* VEHICLE TYPE










AUTOMOBILE
18
0.56
0.6
22.16
14.6
23.2
62.9 -0.75
.60
-1.3
1.3
TRUCK
2
0.30
0.7
8.13
5.9
39.7
7.4 -1.31
.97
-1.4
0.8
*VEHICLE OWNER










GSA
1
0.82
0.0
12.30
0.0
44.9
0.0 -1.99
0.00
-2.0
0.0
PRIVATE OWNER
19
0.52
0.6
21. 20
14.8
23.8
61.1 -0.74
.58
-1.3
1.3
"•CONTROL OPTIONS (CONVERTER, AIR
PUMP)






CNV/A.PMP
5
0.60
0.8
8.39
5.4
81.9
76.9 -0.73
.63
-2.2
1.9
CNV/NO A.PMP
12
0.52
0.5
23.93
12.5
10.5
42.0 -0.75
.52
-0.9
0.9
A.PMP/NO CNV
2
0.36
0.7
18.07
20.6
2.8
15.3 -0.52
.09
-1.8
0.7
NO CNV/NO APMP
1
0.77
0.0
49.88
0.0
-43.6
0.0 -2.47
0.00
-1.3
0.0
~DISPLACEMENT










LESS THAN 151
3
0.27
0.5
15.23
15.4
40.9
66.8 -0.66
.26
-2.8
1.8
151 - 250
2 ¦
0.41
0.6
11.38
1.3
4.6
56.9 -1.32
.95
-0.6
1.9
251 - 350
13
0.56
0.6
25.03
14.9
24.7
65.8 -0.86
.65
-1.2
1.0
MORE THAN 350
2
0.89
0.6
10.61
12.0
22.3
45.0 -0.18
.12
-0.7
1.1
~INERTIA WEIGHT










1800 - 2799
1
0.09
0.0
9.55
0.0
117.0
0.0 -0.95
0.00
-4.8
0.0
2800 - 3799
5
0.37
0.4
21.41
19.3
0.7
48.3 -1.17
.88
-1.2
1.2
3800 - 4799
13
0.64
0.6
21.49
14.1
24.9
62.0 -0.71
.51
-1.1
1.1
4800 - 5799
1
0.49
0.0
19.07
0.0
54.1
0.0 -0.10
0.00
-1.5
0.0
ALL VEHICLES
20
0.54
0.6
20.75
14.5
24.9
59.7 -0.81
.63
-1.3
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-58

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(MANU. TUNE-UP	TUNEUP/PARADJ/DEV)
if OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
1
36. 2
0.0
82.6
0.0
-10.5
0.0
-183.0
0.0
-7.8
0.0
CHRYSLER
1
39.6
0.0
32.8
0.0
24.1
0.0
-3.8
0.0
-33.4
0.0
FORD MOTOR CO.
1
26. 3
0.0
62.7
0.0
11.1
0.0
-76.5
0.0
-15.0
0.0
GENERAL MOTORS
15
25.5
29.6
43.1
18.4
2.6
8.4
-63.3
42.0
-8.5
9. 1
IMPORTS
2
11.1
41.6
48.3
10.9
0.8
4.4
-35.1
6. 6
-8.5
4.3
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
20
25.4
27.9
46.0
18.9
3.3
9.5
-64.2
48. 3
-10.0
9.7
*VEHICLE TYPE











AUTOMOBILE
18
27.3
27.5
47.4
19.3
2.9
10.0
-63.7
50.4
-10. 1
10.2
TRUCK
2
7.7
34.3
33.5
11.6
6.9
2.3
-68.6
34.4
-9.6
4.8
*VEHICLE OWNER











GSA
1
32.0
0.0
41.7
0.0
8.5
0.0
-93.0
0.0
-12.9
0.0
PRIVATE OWNER
19
25.0
28.6
46. 3
19.4
3.0
9.7
-62.7
49.2
-9.9
10.0
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
25.2
33.7
39.5
14.5
12.3
10.9
-55.1
54.3
-17.0
14.8
CNV/NO A.PMP
12
26.9
26.8
45.4
19.7
1.1
7.1
-62.9
38.5
-7.6
¦7.3
A.PMP/NO CNV
2
11.1
41.6
48.3
10.9
0.8
4.4
-35.1
6.6
-8.5
4.3
NO CNV/NO APMP
1
36.2
0.0
82.6
0.0
-10.5
0.0
-183.0
0.0
-7.8
0.0
^DISPLACEMENT











LESS THAN 151
3
9.0
29.6
46.6
8.2
8.0
12.8
-69.3
59.4
-15.8
13.1
151 - 250
2
16.2
22.4
29.8
16.8
-0.6
12.8
-72.7
28.7
-4.5
11.9
251 - 350
13
26.3
27.8
49.0
21.5
2.8
9.5
-70. 1
49.8
-10.1
9.3
MORE THAN 350
2
53.3
25.9
42.6
13. 1
3.2
6.4
-9.6
5.3
-6.2
9.2
*INERTIA WEIGHT










1800 - 2799
1
4.7
0.0
43.2
0.0
22.3
0.0
-137.7
0.0
-30.5
0.0
2800 - 3799
5
17.0
25.2
51.9
24. 3
-1.5
9.2
-76.4
62.0
-7.2
7.2
3800 - 4799
13
29.4
30.4
43.6
18.6
3.3
8.6
-58.3
39.8
-9.3
9.7
4800 - 5799
1
35.0
0.0
51.9
0.0
7.8
0.0
-5.8
0.0
-12.8
0.0
ALL VEHICLES
20
25.4
27.9
46.0
18.9
3.3
9.5
-64.2
oo
-10.0
9.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
H-59

-------
APPENDIX I
TABLES OF TEST RESULTS
ALL VEHICLES	PAGE 1-2
1968-1972	PAGE 1-6
1973-1974	PAGE 1-10
1975	PAGE 1-14
STATISICAL SUMMARY	PAGE 1-18
1-1

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES-HOT START DATA)
(BASELINE)
9
4.33
1.4
80.59
24.7
483.3
128.2
1.98
.77
14.9
3.3
18
3.94
1.5
78.25
26.6
569.6
121.5
2.52
.78
13.0
2.7
7
4.84
3.4
70.89
36.5
502.6
139.0
2.40
1.57
14.5
2.5
21
2.97
2.6
59.28
38.2
549.2
110.3
1.54
.66
14.0
2.4
5
2.73
1.7
48.84
26.3
313.9
55.2
1.36
.56
22.5
2.8
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
CHRYSLER
FORD MOTOR CO.
GENERAL MOTORS
IMPORTS
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
* VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	5 1.15 0.6 13.23 10.8 648.2 82.1 1.73 1.02 13.4 1.8
CNV/NO A.PMP 13 1.97 0.6 56.89 23.3 581.4 78.1 1.18 .23 13.4 2.0
A.PMP/ljO CNV 13 4.23 2.8 71.58 32.0 485.9 152.2 2.25 .89 15.7 4.5
NO CNV/NO APMP 29 4.60 1.9 82.17 27.9 486.5 131.7 2.27 .96 14.9 3.8
~DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
~INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
ALL VEHICLES
2
6.18
0.6
129.60
37.5
404.4
96.5
1.91
.43
14.6
3.7
4
6.86
3.4
103.75
17.1
447.1
72.6
2.51
1.38
14.1
1.3
8
5.63
2.8
74.66
23.6
432.5
73.9
2.43
.80
16.1
2.7
3
5.68
1.5
102.26
45.1
575.1
101.6
2.69
1.18
11.8
0.5
1
2.80
0.0
41.48
0.0
385.2
0.0
2.65
0.00
19.3
0.0
14
3.86
1.2
76.00
21.5
612.6
114.0
2.47
.91
12.3
2.6
6
3.65
0.6
74.10
12.6
358.0
110.5
1.35
.63
19.1
4.4
22
1.77
0.8
45.03
28.1
560.5
115.1
1.47
• 70
14.5
3.5
52
3.71
2.4
69.36
32.9
505.4
131.2
1.95
.94
14.9
3.7
8
3.38
1.7
64.03
34.2
617.9
105.3
2.24
.96
12.6
2.3
21
3.77
1.2
72.79
24.2
541.8
145.1
2.26
.95
14.0
3.3
39
3.60
2.7
66.43
36.7
508.9
126.4
1.84
.92
14.9
3.8
8
2.54
1.6
49.46
30.7
353.2
84.8
1.35
.74
20.7
3.4
13
3.73
1.5
67.33
23.0
402. 7
70.4
1.94
.81
17.2
1.7
23
3.87
3.0
68.40
31.5
559.7
80.4
1.95
1.01
13.2
1.5
16
3.87
1.9
79.69
39.9
643.1
85.9
2.40
.91
11.4
0.9
6
3.01
1.4
50.45
21.8
369.4
102.5
1.52
.89
19.8
3.5
21
4.45
2.9
72.28
31.1
423.3
97.3
1.95
.86
16.7
3.3
32
3.35
1.9
70.34
35.5
607.0
79.7
2.12
1.01
12.3
1.4
I
1.29
0.0
47.60
0.0
691.3
0.0
1.26
0.00
11.5
0.0
60
3.66
2.3
68.65
32.8
520.4
132.9
1.99
.94
14.6
3.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-2

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
CALL VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
9
3.75
1.1
34.48
21.6
503.7
82.1
2.56
1.05
16.0
2.7
CHRYSLER
18
3.46
1.5
35.53
16.9
539.7
91.2
3.40
1.07
14.9
2.4
FORD MOTOR CO.
7
3.72
1.9
34.56
25.3
493.7
118.5
2.89
1.00
16.4
3.2
GENERAL MOTORS
21
2.22
2.5
24.74
14.8
551.3
109.9
2.10
.85
15.3
2.9
IMPORTS
5
2.63
1.9
29.15
16.9
315.2
51.9
1.96
.75
24.5
3.9
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
^VEHICLE OWNER
GSA
PRIVATE OWNER
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	5 1.07 0.5 9.64 9.0 582.7 117.3 2.52 .92 15.3 3.5
CNV/NO A.PMP 13 1.05 0.6 24.34 12.8 584.3 79.2 1.94 .79 14.4 2.0
A.PMP/NO CNV 13 3.93 2.5 34.75 18.2 470.2 118.2 2.78 1.17 17.4 4.3
NO CNV/NO APMP 29 3.86 1.4 35.88 18.3 490.9 111.5 2.911.1116.6 4.0
~DISPLACEMENT
2
5.26
0.7
50.87
10.3
516.1
117.6
2.35
1.90
14.7
2.5
4
5.47
1.5
51.78
10.1
486.7
47.4
3.07
.82
15.3
1.8
8
4.85
2.2
30.81
21.2
436.7
67.5
2.21
.73
18.1
2.5
3
3.52
0.8
23.24
12.0
607.5
77.2
2.39
1.09
13.7
2.0
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
14
3.51
1 .0
33.30
11.8
568.5
89.3
3.69
1.03
14.3
2.3
6
3.89
2.1
49.91
21. 1
356.5
80..8
2.07
.84
20.9
5.3
22
1.13
0.7
19.83
13.4
549.1
111.8
2.25
.92
15.9
3.8
52
3.06
2.1
32.01
18.6
507.9
119.0
2.46
1.01
16.4
4.0
8
2.82
1.6
24.09
13.0
556.0
72.2
3.77
.95
14.9
1.9
21
3.35
1.1
32.34
13.5
523.3
100.7
3.29
1.04
15.6
2.7
39
2.86
2.3
30.20
20.3
509.5
122.4
2.29
.96
16.5
4.2
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
8
13
23
16
2.50
3.46
2.86
3.20
1.5
2.2
2.4
1.5
31.50
34.16
31.14
27.79
20.8
16.2
21.8
12.7
340.4
417.9
557.4
617.7
53.3
52.4
72.2
45.2
1.96
2.60
2.48
3.24
.73
1.09
1.06
1.08
22.8
18.5
14.6
13.3
3.9
1.7
1.9
0.9
~INERTIA WEIGHT











1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
6
21
32
1
3.13
3.78
2.59
0.83
1.3
2.3
1.8
0.0
28.84
36.62
27.98
19.58
14*. 7
22.9
14.7
0.0
346.1
434.7
594.7
623.4
65.6
76.2
60.9
0.0
2.21
2.49
2.85
1.74
.86
1.12
1.10
0.00
22.5
18.1
13.8
13.5
3.8
3.2
1.4
0.0
ALL VEHICLES
60
3.03
2.0
30.95
18.1
514.3
114.6
2.64
1.09
16.2
3.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-3

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
9
0.58
0.6
46.11
12.7
-20.3
56.7 -0.58
.78 -1.0
1.2
CHRYSLER
18
0.48
1.6
42.72
32.1
29.9
61.0 -0.87
.94 -1.9
1.0
FORD MOTOR CO.
7
1.12
2.3
36.33
26.6
8.8
49.4 -0.49
1.34 -2.0
1.7
GENERAL MOTORS
21
0.75
1.3
34.54
29.7
-2.1
58.1 -0.56
.84 -1.4
1.3
IMPORTS
5
0.10
0.3
19.68
11.0
-1.3
19.7 -0.60
.38 -2.0
1.4
~MODEL YEAR









1968
2
0.93
0.1
78.73
47.8
-111.8
21.1 -0.43
1.46 -0.1
1.2
1969
4
1.39
2.6
51.97
25.8
-39.6
41.0 -0.57
.77 -1.2
0.8
1970
8
0.78
2.5
43.85
14.7
-4.2
38.5 0.22
.66 -2.0
1.8
1971
3
2.16
2.2
79.03
52.5
-32.4
59.5 0.30
1.16 -2.0
2.0
1972
1
0.02
0.0
11.49
0.0
0.9
0.0 -0.29
0.00 -0.8
0.0
1973
14
0.35
0.9
42.70
20.9
44.1
56.9 -1.22
.69 -2.0
1.0
1974
6
-0.24
1.5
24.20
16.8
1.5
40.9 -0.72
.39 -1.8
1.1
1975
22
0.64
0.6
25.20
22.5
11.4
51.1 -0.77
.87 -1.3
1.3
~VEHICLE TYPE









AUTOMOBILE
52
0.64
1.5
37.36
27.8
-2.5
52.1 -0.52
.81 -1.5
1.3
TRUCK
8
0.56
1.1
39.94
25.7
61.9
58.3 -1.52
.96 -2.4
1.3
~VEHICLE OWNER









GSA
21
0.42
0.8
40.44
19.1
18.5
65.7 -1.03
.88 -1.6
1.3
PRIVATE OWNER
39
0.74
1.7
36.23
31.1
-0.6
51.2 -0.45
.84 -1.6
1.3
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
5
0.08
0.6
3.58
2.5
65.5
41.6 -0.79
1.41 -1.9
1.8
CNV/NO A.PMP
13
0.92
0.6
32.55
21.8
-2.9
47.2 -0.76
.72 -1.0
1.1
A.PMP/NO CNV
13
0.30
1.7
36.83
22.1
15.7
64.2 -0.53
.82 -1.7
1.1
NO CNV/NO APMP
29
0.74
1.6
46.29
29.5
-4.4
55.0 -0.64
.92 -1.7
1.4
~DISPLACEMENT









LESS THAN 151
8
0.05
0.4
17.96
11.3
12.8
48.3 -0.61
.35 -2.1
1.7
151 - 250
13
0.27
0.9
33.17
15.0
-15.2
43.3 -0.66
.97 -1.3
1.4
251 - 350
23
1.02
1.8
37.25
26.5
2.3
50.4 -0.53
.91 -1.4
1.2
MORE THAN 350
16
0.66
1.3
51.90
35.2
25.4
74.7 -0.84
1.01 -1.8
1.1
~INERTIA WEIGHT
1800 - 2799
6
-0.12
0.4
21.61"
12.7
23.
4
52.
,6
-0.
.68
.35
-2,
.7
1.7
2800 - 3799
21
0.67
2.0
35.66
23.7
-11.
3
47.
.2
-0.
.53
1.02
-1
.4
1.3
3800 - 4799
32
0.75
1.1
42.36
31.0
12.
3
62,
,0
-0.
.73
.89
-1,
.5
1.2
4800 - 5799
1
0.46
0.0
28.02
0.0
67.
9
0,
,0
-0.
,48
0.00
-2,
.0
0.0
ALL VEHICLES
60
0.63
1.4
37.70
27.4
6.
1
56.
,9
-0,
.65
.89
-1,
.6
1.3
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)

# OF
HC

CO

C02
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D
~VEHICLE MANUFACTURER





AMER. MOTORS
9
13.2
13.3
59.5
16.0
-6.8
12.4
CHRYSLER
18
7.5
32.3
50.0
24.6
3.9
10.0
FORD MOTOR CO.
7
13.0
21.2
51.8
21.5
0.5
9.9
GENERAL MOTORS
21
26.0
49.1
52.3
21.7
-1.0
11.3
IMPORTS
5
9.0
13.2
43.7
11.8
-0.7
5.9
~MODEL YEAR







1968
2
15.1
3.8
57.8
20.1
-27.8
1.4
1969
4
12.6
25.3
48.1
18.1
-9.9
10.2
1970
8
8.1
25.2
60.8
16.3
-1.6
9.5
1971
3
31.8
35.8
69.5
27.9
-6.6
12.0
1972
1
0.7
0.0
27.7
0.0
0.2
0.0
1973
14
5.5
22.9
54.4
17.6
6.4
8.0
1974
6
-2.3
34.8
33.5
23.3
-1.3
8.5
1975
22
28.7
45.9
51.1
21.9
1.5
9.2
~VEHICLE TYPE







AUTOMOBILE
52
15.3
36.2
51.3
20.8
-1.6
10.5
TRUCK
8
17.8
32.9
56.0
23.6
9.2
8.2
~VEHICLE OWNER







GSA
21
10.5
24.0
54.9
15.5
0.9
12.5
PRIVATE OWNER
39
18.3
40.5
50.3
23.5
-0.8
10.0
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)



CNV/A.PMP
5
-10.4
81.0
33.6
21.5
10.8
8.2
CNV/NO A.PMP
13
45.5
22.2
55.5
20.3
-0.8
8.1
A.PMP/NO CNV
13
5.8
22.5
50.8
16.9
1.4
10.6
NO CNV/NO APMP
29
11.1
26.4
54.0
22.2
-2.5
11.5
NOX	MPG
MEAN S.D. MEAN S.D.
~DISPLACEMENT
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
~INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
-36.1
-42.6
-74.3 141.2
-51
-53,
54.5 -8.6 10.5
53.5 -15.9 10.5
-13.6 12.9
64.9 -9.7 8.8
36.7 -8.6 5.2
-14.5
-39.4
5.8
0.4
-10.9
-61.2
-62.6
-71.3
73.2 -1.7
41.5 -8.3
27.7 -13.7
8.5
5.7
12 8
55.2 -16.6 16*9
0.0 -4.3 0.0
54.4 -17.4 10.8
32.1 -9.0 3.5
90.8 -9.5 8.4
64.9 -10.4 9.1
88.3 -20.5 12.4
68.3 -13.5 11.7
70.6 -10.8 9.1
-66.4 60.9 -8.3 8.5
-32.1 47.6 -12.9 10.3
-39.2 52.4 -12.6 10.6
8
-10.0
55.8
38.5
11.4
1.9
10.1
-63.8
51.0 -10.6
9.3
13
13.2
22.4
50.4
17.5
-4.9
11.2
-48.4
74.2 -8.0
8.5
23
26.5
33.1
51.4
26.1
-0.2
9.4
-44.9
81.1 -11.0
9.9
16
14.7
31.2
60.6
16.0
2.6
12.5
-48.7
61.8 -16.6
10.9
6 -23.2	60.1	41.4 17.1	4.2	10.6	-68.3
21	11.3	26.4	49.5	22.7	-4.1	11.0	-43.8
32 25.1	31.1	55.3 20.6	1.2 10.4 -49.5
1	35.7	0.0	58.9	0.0 9.8 0.0	-38.1
56.5 -14.4 10.0
87.7 -9.2 9.0
61.1 -12.8	10.8
0.0 -17.3	0.0
ALL VEHICLES 60 15.6 35.6 51.9 21.0 -0.2 10.8 -49.2 69.9 -11.8 10.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-5

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
5
4.70
1.6
80.01
28.6
412.9
84.9
1.98
.65
16.5
2.9
CHRYSLER
3
5.88
1.2
116.79
20.0
517.5
23.1
2.24
.71
12.4
0.7
FORD MOTOR CO.
5
5.94
3.4
78.16
27.3
498.0
121.9
3.04
1.37
14.2
2.5
GENERAL MOTORS
5
6.77
3.1
95.71
45.5
412.2
57.6
2.43
.43
15.6
2.9
IMPORTS
0










~MODEL YEAR











1968
2
6.18
0.6
129.60
37.5
404.4
96.5
1.91
.43
14.6
3.7
1969
4
6.86
3.4
103.75
17.1
447.1
72.6
2.51
1.38
14.1
1.3
1970
8
5.63
2.8
74.66
23.6
432.5
73.9
2.43
.80
16.1
2.7
1971
3
5.68
1.5
102.26
45.1
575.1
101.6
2.69
1.18
11.8
0.5
1972
1
2.80
0.0
41.48
0.0
385.2
0.0
2.65
0.00
19.3
0.0
1973
0










1974
0










1975
0










~VEHICLE TYPE











AUTOMOBILE
18
5.82
2.5
89.99
33.3
453.8
91.3
2.44
.91
14.9
2.8
TRUCK
0










*VEHICLE OWNER











GSA
5
4.31
0.8
76.64
28.2
427.9
147.5
2.35
1.09
16.3
3.1
PRIVATE OWNER
13
6.40
2.7
95.12
34.7
463.7
64.5
2.48
.87
14.4
2.6
~CONTROL OPTIONS
(CONVERTER,AIR PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.81
3.6
80.60
35.2
397.1
53.8
2.49
.48
16.5
2.4
NO CNV/NO APMP
14
5.53
2.2
92.67
33.6
470.0
94.6
2.43
1.01
14.5
2.8
~DISPLACEMENT











LESS THAN 151
1
2.80
0.0
41.48
0.0
385.2
0.0
2.65
0.00
19.3
0.0
151 - 250
6
4.69
1.6
78.70
25.9
367.5
32.7
2.04
. 66
17.6
1.2
251 - 350
7
7.16
3. 2
91.87
24.0
482.8
51.3
2.69
1.10
13.8
1.6
MORE THAN 350
4
5.91
1.3
115.73
45.6
549.5
97.5
2.57
.99
11.8
0.4
~INERTIA WEIGHT











1800 - 2799
2
2.97
0.2
45.47
5.6
402.3
24.3
2.46
.27
18.4
1.3
2800 - 3799
10
6.30
3.0
88.59
25.6
414.8
73.9
2.20
.86
15.8
2.4
3800 - 4799
6
5.96
1.4
107.16
37.8
535.9
78.6
2.85
1.07
12.3
0.8
4800 - 5799
0










ALL VEHICLES
18
5.82
2.5
89.99
33.3
453.8
91.3
2.44
.91
14.9
2.8
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-6

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
it
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
5
4.04
0.9
42. 13
24. 2
460.0
59.7
2.00
.80
16.8
2.5
CHRYSLER
3
3.86
1.3
30.28 ¦
21.3
545.3
47.0
2.26
.89
14.7
1.1
FORD MOTOR CO.
5
4.51
1.5
34. 11
20.9
499.2
119.2
2.99
.74
16.3
3.7
GENERAL MOTORS
5
6.05
2.4
36.60
13.4
449.6
104.1
2.61
1. 12
17.4
3.3
IMPORTS
0







*MODEL YEAR











1968
2
5.26
0.7
50.87
10. 3
516. 1
117.6
2.35
1.90
14.7
2.5
1969
4
5.47
1.5
51.78
10. 1
486.7
47.4
3.07
.82
15.3
1.8
1970
8
4.85
2.2
30.81
21.2
436.7
67.5
2.21
.73
18.1
2.5
1971
3
3.52
0.8
23. 24
12.0
607-5
77.2
2.39
1.09
13.7
2.0
1972
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
1973
0







1974
0










1975
0










*VEHICLE TYPE











AUTOMOBILE
18
4.70
1.8
36.39
18.8
482 .2
90. 7
2.49
.91
16.5
2.9
TRUCK
0







^VEHICLE OWNER











GSA
5
4.01
0.5
36.82
15.2
477 .5
118.8
2.40
.99
16.7
2.9
PRIVATE OWNER
13
4.96
2.0
36. 23
20.6
484.0
83.4
2.52
.92
16.4
3.0
^CONTROL OPTIONS
»(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.12
2.8
34.85
14.7
412. 1
71.5
2.34
1.09
18.5
2.5
NO CNV/NO APMP
14
4.29
1.2
36.83
20.3
502.2
87.4
2.53
.89
15.9
2.8
^DISPLACEMENT











LESS THAN 151
1
2.78
0.0
29.99
0.0
384.3
0.0
2.94
0.00
20.2
0.0
151 - 250
6
4.75
2.5
35.50
17.3
402. 6
40. 1
2.04
.91
18.9
1.7
251 - 350
7
5.27
1.3
42.68
23.6
4 94.0
42. 1
2.67
.86
15.6
2.1
MORE THAN 350
4
4.08
1.3
28. 33
14.1
605.5
63. 1
2.72
1.10
13.5
1.7
*INERTIA WEIGHT











1800 - 2799
2
2.93
0.2
21.85
11.5
388. 1
5.5
2.88
.08
20.6
0.6
2800 - 3799
10
5.02
1.9
38.03
19.7
444.4
59.6
2.12
.84
17.3
2.2
3800 - 4799
6
4.75
1.5
38.51
19.7
576. 7
66.9
2.97
.96
13.7
1.4
4800 - 5799
0







ALL VEHICLES
18
4.70
1.8
36.39
18.8
482.2
90.7
2.49
.91
16.5
2.9
AUTOMOTIVE TESTING'LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-7

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
if OF HC	CO	C02	NOX	MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
5
0.67
0.8
37.88
6.4
-47.1
34.7 -0.02
.36
-0.3
0.8
CHRYSLER
3
2.03
2.4
86.50
39.7
-27.8
63.6 -0.03
1.30
-2.4
1.6
FORD MOTOR CO.
5
1.43
2.7
44.05
26.8
-1.2
43.6 0.06
.75
-2.1
2.1
GENERAL MOTORS
5
0. 72
2.7
59.10
37.9
-37.4
64.3 -0.18
1. 20
-1.8
1.0
IMPORTS
0









*MODEL YEAR










1968
2
0.93
0. 1
78.73
47.8
-111.8
21.1 -0.43
1.46
-0.1
1.2
1969
4
1. 39
2.6
51.97
25.8
-39.6
41.0 -0.57
.77
-1.2
0.8
1970
8
0.78
2.5
43.85
14.7
-4.2
38.5 0.22
. 66
-2.0
1.8
1971
3
2. 16
2.2
79.03
52.5
-32.4
59.5 0.30
1.16
-2.0
2.0
1972
1
0.02
0.0
11.49
0.0
0.9
0.0 -0.29
0.00
-0.8
0.0
1973
0









1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
18
1.12
2.1
53.59
31.7
-28.4
50.2 -0.04
.84
-1.6
1.6
TRUCK
0









*VEHICLE OWNER










GSA
5
0. 30
0.5
39.83
18.6
-49.7
37.0 -0.04
.55
-0.3
1.0
PRIVATE OWNER
13
1.44
2.5
58.89
34. 6
-20.3
53.5 -0.04
.95
-2.0
1.5
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
0.69
3.1
45.75
27.0
-15. 1
46.7 0.14
1.10
-2.0
1.1
NO CNV/NO APMP
14
1.24
1.9
55.83
33.4
-32.3
52.2 -0.10
.79
-1.4
1.7
~DISPLACEMENT










LESS THAN 151
1
0.02
0.0
11.49
0.0
0.9
0.0 -0.29
0.00
-0.8
0.0
151 - 250
6
-0.06
1.2
43.21
13.6
-35. 1
47.5 0.00
.72
-1.3
1.7
251 - 350
7
1.89
2.7
49.19
21.0
-11.2
44.1 0.01
.85
-1.8
1.6
MORE THAN 350
4
1.82
1.9
87.40
46.0
-56.0
67.7 -0.14
1.29
-1.7
1.7
~INERTIA WEIGHT










1800 - 2799
2
0.03
0.0
23.62
17.2
14.2
18.8 -0.42
.19
-2.2
1.9
2800 - 3799
10
1.28
2.6
50.56
17.3
-29.6
47.5 0.08
. 80
-1.5
1.7
3800 - 4799
6
1.21
1.8
68.64
46.5
-40.8
59.4 -0.12
1.08
-1.4
1.5
4800 - 5799
0









ALL VEHICLES
18
1.12
2.1
53.59
31.7
-28.4
50.2 -0.04
.84
-1.6
1.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-8

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
( 1968-1972 VEHICLES-HOT .START DATA)


(BASELINE
-INSTALLATION
OF DEVICE)




OF
HC

CO

C02
NOX MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D. MEAN S.
D.
^VEHICLE MANUFACTURER








AMER. MOTORS
5
11.4
10.9
50.5
13.5
-12.9
11.0
-0.3
22.2 -2.2
5.3
CHRYSLER
3
29.3
40. 2
71.5
24.6
-5.7
12.8
-11.7
57.0 -19.6
14. 1
FORD MOTOR CO.
5
14. 1
25.1
55.5
23.8
-0.8
10.0
-13.3
44.2 -14.7
15.4
GENERAL MOTORS
5
5.2
27.4
57.3
19.6
-8.4
14.4
-9.3
52.4 -11.3
6.1
IMPORTS
0









* MODEL YEAR










1968
2
15.1
3.8
57.8
20.1
-27.8
1.4
-14.5
73.2 -1.7
8.5
1969
4
12.6
25.3
48. 1
18.1
-9.9
10.2
-39.4
41.5 -8.3
5.7
1970
8
8.1
25.2
60.8
16.3
-1.6
9.5
5.8
27.7 -13.7
12.8
1971
3
31.8
35.8
69.5
27.9
-6.6
12.0
0.4
55.2 -16.6
16.9
1972
1
0.7
0.0
27.7
0.0
0.2
0.0
-10.9
0.0 -4.3
0.0
1973
0









1974
0









1975
0









*VEHICLE TYPE










AUTOMOBILE
18
13.4
24.7
57.3
19.7
-7. 1
11.9
-8.3
40.4 -11.1
11.6
TRUCK
0









*VEHICLE OWNER










GSA
5
5.8
11.0
51.5
13.4
-14.0
11.0
-9.7
45.5 -2.4
6.0
PRIVATE OWNER
13
16.4
28.1
59.5
21.7
-4.4
11.5
-7.8
40.2 -14.5
11.6
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
4
3.3
31.3
53.6
20.5
-3.8
11.6
4.9
48.0 -12.2
6.7
NO CNV/NO APMP
14
16.3
23.0
58.3
20.1
-8.0
12.3
-12.1
39.1 -10.8
12.8
^DISPLACEMENT










LESS THAN 151
1
0.7
¦ 0.0
27.7
0.0
0.2
0.0
-10.9
0.0 -4.3
0.0
151 - 250
6
1.4
17.5
56.7
12.9
-10.1
13.5
-4.7
48.8 -7.4
9.9
251 - 350
7
17.8
26.0
54.6
20.8
-2.9
10.0
-6.5
31.7 -13.4
12.6
MORE THAN 350
4
27.0
30.8
70.1
22.8
-11.6
14.1
-16.3
56.1 -14.4
14.5
*INERTIA WEIGHT









1800 - 2799
2
1.0
0.4
50.0
31. 5
3.4
4.5
-17.8
9.7 -12.1
10.9
2800 - 3799
10
13.9
24.8
58.2
14.8
-8.3
12.4
-3.2
43.0 -10.6
12.3
3800 - 4799
6
16.8
29.8
58.1
26.5
-8.5
12.3
-13.7
45.6 -11.7
12.6
4800 - 5799
0









ALL VEHICLES
18
13.4
24.7
57.3
19.7
-7.1
11.9
-8.3
40.4 -11.1
11.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-9

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE)
0 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
3
4.40
0.6
85.00
26.8
627.7
66.8
2.03
1.23
11.6
1.5
CHRYSLER
13
3.68
1.2
73.54
18.8
585.2
134.9
2.48
.81
13.0
3.1
FORD MOTOR CO.
1
3.40
0.0
97.95
0.0
346.4
0.0
0.74
0.00
17.4
0.0
GENERAL MOTORS
0










IMPORTS
3
3.86
1.0
66.56
4.3
295.8
68.7
o
CM
.71
21.9
3.8
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
14
3.86
1.2
76.00
21.5
612.6
114.0
2.47
.91
12.3
2.6
1974
6
3.65
0. 6
74.10
12.6
358.0
110.5
1.35
.63
19.1
4.4
1975
0










*VEHICLE TYPE











AUTOMOBILE
16
3.59
1.0
71.95
17.6
497.0
156.1
2.03
1.00
15.3
4.5
TRUCK
4
4.64
1.2
89.36
19.7
692.9
68. 3
2.56
.87
10.5
0.9
*VEHICLE OWNER











GSA
13
3.88
1.1
76.99
21.7
592.8
137.3
2.29
.89
12.8
3.2
PRIVATE OWNER
7
3.64
1.0
72.54
13.3
431.2
161.9
1.85
1.14
17.2
5.2
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
7
3.67
1 .0
80.52
20.0
578.0
150.6
2.31
1.13
12.9
3.0
NO CNV/NO APMP
13
3.87
1.2
72.70
18.5
513.7
170.2
2.04
.92
15.1
5.0
~DISPLACEMENT











LESS THAN 151
4
3.75
0.8
74.41
16.1
308.4
61.6
1.08
.62
20.8
3.8
151 - 250
3
3.55
0.1
68.93
6.2
371.3
33. 3
1.95
.87
18.1
1.4
251 - 350
3
4.84
0.9
81.36
8.2
575.6
19.3
2.69
.72
12.4
0.6
MORE THAN 350
10
3.58
1.3
76.02
24.9
665.0
56.2
2.44
.95
11.3
1.1
*INERTIA WEIGHT











1800 - 2799
3
3.86
1.0
66. 56
4.3
295.8
68. 7
1.20
.71
21.9
3.8
2800 - 3799
6
3.79
0.5
76.33
11.9
431.9
106.3
2.02
1.02
16.2
2.9
3800 - 4799
11
3.79
1.4
77.36
24.0
658.7
57.3
2.45
.90
11.3
1.0
4800 - 5799
0










ALL VEHICLES
20
3.80
1.1
75.43
18.9
536.2
162.6
2.13
00
14.4
4.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-10

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-19 74 VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
it	OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS 3 4.08 0.4 30.13 14.1 596.8 14.7 3.11 1.08 13.5 0.5
CHRYSLER	13 3.53 1.6 37.40 17.5 541.7 103.0 3.67 1.03 14.9 2.8
FORD MOTOR CO. 1 2.75 0.0 67.95 0.0 363.9 0.0 1.29 0.00 18.5 0.0
GENERAL MOTORS 0
IMPORTS	3 3.86 1.2 40.36 4.2 300.3 66.6 1.95 1.06 24.3 5.3
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	14 3.51 1.0 33.30 11.8 568.5 89.3 3.69 1.03 14.3 2.3
1974	6 3.89 2.1 49.91 21.1 356.5 80.8 2.07 .84 20.9 5.3
1975	0
*VEHICLE TYPE
AUTOMOBILE	16 3.50 1.5 40.25 17.5 482.8 135.3 2.93 1.19 16.9 4.9
TRUCK' 4 4.12 0.7 30.39 10.6 593.3 61.2 4.31 .56 13.7 1.4
*VEHICLE OWNER
GSA	-	13 3.50 0.8 33.37 11.9 549.0 100.2 3.55 .98 14.9 2.8
PRIVATE OWNER 7 3.85 2.1 47.40 20.9 423.0 148.5 2.57 1.44 18.9 6.2
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NO CNV 7 3.58 1.2 41.10 17.7 541.3 106.4 3.26 1.23 14.6 2.3
NO CNV/NO APMP	13 3.65 1.5 36.77 16.5 485.3 142.2 3.18 1.27 17.2 5.3
*DISPLACEMENT
LESS THAN 151
4
3.59
1.2
47. 25
14.2
316.2
63.0
1.78
.93
22.8
5.2
151 - 250
3
3.08
0.3
42.82
13.2
384.1
29.0
2.95
1.21
19.4
1.9
251 - 350
3
5.03
2.6
46.12
33.1
522.9
52.2
3.71
1.42
14.6
1.0
MORE THAN 350
10
3.38
1.1
30.98
10.4
611.2
25.7
3.70
.91
13.3
0.5
"INERTIA WEIGHT











1800 - 2799
3
3.86
1.2
40.36
4.2
300.3
66.6
1.95
1.06
24.3
5.3
2800 - 3799
6
3.84
2.0
51.66
21.9
4 28.5
85.6
2.95
1.49
17.4
3.0
3800 - 4799
11
3.44
1.1
30.42
10.0
602.3
38. 2
3.69
.86
13.5
0.9
4800 - 5799
0










ALL VEHICLES
20
3.62
1.4
38.28
16.6
504.9
130.8
3.21
1.22
16.3
4.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-11

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
3
0.32
0.3
54.87
13.0
30.9
67.2 -1.08
.29 -1.9
1.1
CHRYSLER
13
0. 15
1.4
36. 14
23.7
43.5
58.1 -1.18
.75 -1.9
1.0
FORD MOTOR CO.
1
0.65
0.0
30.00
0.0
-17.5
0.0 -0.55
0.00 -1.1
0.0
GENERAL MOTORS
0








IMPORTS
3
0.00
0.3
26.21
7.9
-4.6
16.1 -0.75
.40 -2.4
1.5
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
14
0.35
0.9
42.70
20.9
44.1
56.9 -1.22
.69 -2.0
1.0
1974
6
-0.24
1.5
24.20
16.8
1.5
40.9 -0.72
.39 -1.8
1.1
1975
0








*VEHICLE TYPE









AUTOMOBILE
16
0.09
1.0
31.70
18.4
14.3
42.0 -0.90
.50 -1.6
0.9
TRUCK
4
0.52
1.6
58.97
19.1
99.6
52.9 -1.75
.80 -3.1
0.7
*VEHICLE OWNER









GSA
13
0.38
0.9
43.62
20.9
43.8
61.4 -1.26
.64 -2.1
1.0
PRIVATE OWNER
7
-0.21
1.4
25.15
17.2
8.2
34.6 -0.72
.55 -1.7
1.1
~CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP
0








CNV/NO A.PMP
0








A.PMP/NO CNV
7
0.09
0.7
39.42
17.4
36.6
76.2 -0.95
.46 -1.7
1.1
NO CNV/NO APMP
13
0.22
1.3
35.93
23.6
28.5
43.8 -1.14
.74 -2.0
1.0
*DISPLACEMENT









LESS THAN 151
4
0.16
0.4
27.15
6.7
-7.8
14.6 -0.70
.34 -2.1
1.4
151 - 250
3
0.46
0.2
26. 11
12.3
-12.8
17.7 -1.00
.43 -1.2
0.6
251 - 350
3
-0.19
2.7
35.24
38.6
52.7
49.8 -1.02
.71 -2.2
1.5
MORE THAN 350
10
0.20
0.9
45.04
20.4
53.8
61.0 -1.26
.77 -2.0
0.9
~INERTIA WEIGHT









1800 - 2799
3
0.00
0.3
26.21
7.9
-4.6
16.1 -0.75
.40 -2.4
1.5
2800 - 3799
6
-0.06
1.6
24.66
19.7
3.4
39.9 -0.93
.56 -1.2
0.4
3800 - 4799
11
0.35
1.0 ¦
46.95
20.3
56.4
58.5 -1.24
.74 -2.2
1.1
4800 - 5799
0








ALL VEHICLES
20
0.18
1.1
37.15
21.2
31.3
55.3 -1.07
.65 -1.9
1.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-12

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES-HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
J? OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
3
6.8
4.9
65.5
5.2
4.3
9.8
-72.6
57.1 -17.8
12.1
CHRYSLER
13
1.5
32.3
47.5
23.9
6.1
9.0
-55.9
52.9 -16.0
10.7
FORD MOTOR CO.
1
19.1
0.0
30.6
0.0
-5.1
0.0
-74.3
0.0 -6.6
0.0
GENERAL MOTORS
0









IMPORTS
3
1.4
8.8
39.0
9.9
-1.8
4.9
-71.3
33.7 -10.3
4.8
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
14
5.5
22.9
54.4
17.6
6.4
8.0
-61.2
54.4 -17.4
10.8
1974
6
-2.3
34.8
33.5
23.3
-1.3
8.5
-62.6
32.1 -9.0
3.5
1975
0









*VEHICLE TYPE










AUTOMOBILE
16
2.6
24.8
43.7
20.9
1.5
7.3
-54.9
34.8 -11.2
6.6
TRUCK
4
5.2
35.6
65.5
12.9
14.2
6.6
-88.6
85.1 -29.9
6.3
* VEHICLE OWNER










GSA
13
5.6
23.4
54.9
17.3
5.9
9.3
-67.1
54.1 -17.8
11.2
PRIVATE OWNER
7
-1.4
32.4
35.4
23.3
0.7
7.0
-51.5
34.8 -9.5
3.3
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
0









CNV/NO A.PMP
0









A.PMP/NO CNV
7
3.0
20.5
49.2
17.9
4.4
10.8
-55.0
41.7 -15.2
12.7
NO CNV/NO APMP
13
3.2
29.7
47.5
23.5
3.9
7.9
-65.2
52.2 -14.7
8.7
*DISPLACEMENT










LESS THAN 151
4
5.8
11.4
36.9
9.1
-2.6
4.3
-72.1
27.5 -9.4
4.4
151 - 250
3
13.1
5.5
37.9
17.0
-3.6
5.2
-52.3
20.0 -6.6
2.9
251 - 350
3
-5.7
56.7
41.3
45.3
9.2
8.7
-34.9
17.5 -18.2
13.5
MORE THAN 350
10
1.8
25.0
57.6
14.1
7.5
8.4
-68.3
63.8 -18.6
10.3
*INERTIA WEIGHT









1800 - 2799
3
1.4
8.8
39.0
9.9
-1.8
4.9
-71.3
33.7 -10.3
4.8
2800 - 3799
6
1.7
36.0
32.6
26.1
-0.4
8.1
-49.5
22.7 -7.9
2.7
3800 - 4799
11
4.4
25.3
59.0
14.1
8.1
8.2
-65.6
61.1 -20.0
10.8
4800 5799
0







ALL VEHICLES
20
3.2
26.3
48.1
21.3
4.1
8.7
-61.6
47.9 -14.9
10.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-13

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE)
// OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AtlER. MOTORS
1
2.23
0.0
70.26
0.0
402.7
0.0
1.82
0.00
17.1
0.0
CHRYSLER
2
2.72
1.0
51.06
27. 2
546.2
139.5
3.24
.28
14.1
2.1
FORD MOTOR CO.
1
0.80
0.0
7.46
0.0
681 .5
0.0
0.83
0.00
12.8
0.0
GENERAL MOTORS
16
1.78
0.7
47.90
28.5
592.0
84.3
1.26
.42
13.4
2.0
IMPORTS
2
1.02
0.6
22. 24
19.4
341. 2
15.6
1.60
.29
23.4
1.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
22
1.77
0.8
45.03
28. 1
560.5
115.1
1.47
.70
14.5
3.5
*VEHICLE TYPE











AUTOMOBILE
18
1.70
0.7
46.44
29.2
564.4
123.3
1.37
.59
14.5
3.8
TRUCK
4
2.11
1.0
38.71
25.0
542.8
78.8
1 .93
1.07
14.6
1.0
^VEHICLE OWNER











GSA
3
2.39
1.0
48.16
20.0
510.7
55.8
1.99
1 .30
15.0
0.8
PRIVATE.OWNER
19
1.68
0.7
44.54
29.6
568.4
121.0
1.39
.58
14.5
3.7
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.15
0. 6
13.23
10.8
648.2
82. 1
1.73
1.02
13.4
1.8
CNV/NO A.PMP
13
1.97
0.6
56.89
23. 3
581.4
78. 1
1.18
.23
13.4
2.0
A.PMP/NO CNV
2
1.02
0.6
22. 24
19.4
341.2
15.6
1.60
.29
23.4
1.0
NO CNV/NO APMP
2
2.82
0.8
70.26
0.0
425. 1
31.8
2.63
1.15
16.3
1.0
*DISPLACEMENT











LESS THAN 151
3
0.86
0.5
18.85
14.9
402. 3
106.5
1.28
.60
21.0
4.2
151 - 250
4
2.43
0.8
49.06
16.4
479.0
78.0
1.76
1.16
15.9
2.0
251 - 350
13
1.88
0.6
52.76
29.9
597.4
73.5
1.38
.59
13.1
1.5
MORE THAN 350
2
1. 19
0. 1
25.99
30.6
720.9
41.9
1.84
.81
11.6
0.1
*INERTIA WEIGHT











1800 - 2799
1
0.53
0.0
12.07
0.0
524.6
0.0
0.63
0.00
16.3
0-0
2800 - 3799
5
1.52
0.9
34.80
27. 3
430. 1
143.3
1.39
.44
19.1
4.5
3800 - 4799
15
1.97
0.7
50.4 7
28. 7
597.6
71 .8
1.57
.79
13.1
1.3
4800 - 5799
1
1.29
0.0
47.60
0.0
691.3
0.0
1.26
0.00
11.5
0.0
ALL VEHICLES
22
1.77
0.8
45.03
28. 1
560.5
115. 1
1.47
.70
14.5
3.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-14

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1975 VEHICLES—HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
1.32
0.0
9.26
0.0
442. 7
0.0
3.75
0.00
19.2
0.0
CHRYSLER
2
2.38
1.0
31.21
9.2
518.5
91 .8
3.35
.75
15.6
2.0
FORD MOTOR CO.
1
0.79
0-0
3.39
0.0
596. 1
0.0
3.98
0.00
14.7
0.0
GENERAL MOTORS
16
1.03
0.5
21.04
13.6
583.1
93.2
1.94
.72
14.7
2.6
IMPORTS
2
0. 78
0.4
12.34
12.7
337.5
15.4
1.98
.03
24.8
2.5
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	22 1.13 0.7 19.83 13.4 549.1 111.8 2.25 .92 15.9 3.8
*VEHICLE	TYPE
AUTOMOBILE
TRUCK
18.
4
1.05
1.52
0.5
1.1
20. 29
17.79
13.8
13.3
555.9
518.6
1 19.7
68.6
2.03
3.23
.76
1.02
15.8
16.2
4.2
1.5
*VEHICLE OWNER











GSA
PRIVATE OWNER
3
19
1.60
1.06
1.3
0.5
20.43
19.74
15.0
13.6
488.4
558.7
39.9
117.0
3.66
2.02
.66
.74
16.9
15.7
0.8
4. 1
*CONTROL OPTIONS
(CONVERTER,AIR PUMP)







CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
5
13
2
2
1.07
1.05
0.78
2.19
0.5
0.6
0.4
1.2
9.64
24.34
. 12.34
23.49
9.0
12.8
12.7
20. 1
582.7
584. 3
337.5
448. 1
117.3
79.2
15.4
7.7
2.52
1.94
1.98
3.81
.92
.79
.03
.09
15.3
14.4
24.8
18.1
3.5
2.0
2.5
1.6
~DISPLACEMENT











LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
3
4
13
2
0.95
1.81
1.05
0.56
0.4
1.1
0.4
0.4
10.99
25.67
21 .47
10.78
9.3
"16. 1
13.2
12.4
358. 1
466. 2
599.4
674.6
37.2
55. 1
60.4
72.4
1.87
3.16
2.09
1.98
.20
1.13
.88
.35
23.7
17.4
14.1
12.8
2.7
1.1
1.8
1.0
*INERTIA WEIGHT
1800 - 2799
1
1.
,30
0.0
2800 - 3799
5
1.
.22
0.7
3800 - 4799
15
1.
.11
0.7
4800 - 5799
1
0.
,83
0.0
ALL VEHICLES
22
1.
.13
0.7
8.28	0.0
15.74	16.1
21.98	13.2
19.58	0.0
399.1
0.0
1.64
0.00
21.3
0.0
422.7
106.9
2.67
1.10
20.5
4.5
596. 3
73. 3
2.18
.89
14.2
1.7
623.4
0.0
1.74
0.00
13.5
0.0
549.1
111.8
2.25
.92
15.9
3.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-15

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
// OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.91
0.0
61.00
0.0
-40.0
0.0 -1.93
0.00 -2.2
0.0
CHRYSLER
2
0.35
0.0
19.85
17.9
27.7
47.7 -0.11
.47 -1.4
0. 1
FORD MOTOR CO.
1
0.01
0.0
4.07
0.0
85.4
0.0 -3.15
0.00 -1.9
0.0
GENERAL MOTORS
16
0.75
0.7
26.86
23. 1
8.9
53.4 -0.68
.70 -1.2
1.4
IMPORTS
2
0.24
0. 2
9.90
6.7
3.7
30.9 -0.38
.32 -1.4
1.5
*MODEL YEAR









1968
0








1969
0








1970
0








1971
0








1972
0








1973
0








1974
0








1975
22
0.64
0.6
25.20
22.5
11.4
51.1 -0.77
.87 -1.3
1.3
~VEHICLE TYPE









AUTOMOBILE
18
0.65
0.7
26. 15
24. 1
8.5
54.3 -0.65
.79 -1.3
1.3
TRUCK
4
0.59
0.5
20.91
14.7
24. 2
36.8 -1.30
1.16 -1.6
1.3
*VEHICLE OWNER









GSA
3
0.79
0.4
27.73
6.8
22.3
44.8 -1.67
1.10 -1.9
1.4
PRIVATE OWNER
19
0.62
0.7
24.80
24. 2
9. 7
53.0 -0.63
.78 -1.2
1.3
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)





CNV/A.PMP
5
0.08
0.6
3.58
2.5
65.5
41.6 -0.79
1.41 -1.9
1.8
CNV/NO A.PMP
13
0.92
0.6
32.55
21.8
-2.9
47.2 -0.76
.72 -1.0
1.1
A.PMP/NO CNV
2
0. 24
0.2
9.90
6.7
3.7
30.9 -0.38
.32 -1.4
1.5
NO CNV/NO APMP
2
0.63
0.4
46.76
20.1
-23.0
24.0 -1.19
1.05 -1.8
0.6
~DISPLACEMENT









LESS THAN 151
3
-0. 10
0.6
7.86
5.9
44. 3
73.7 -0.59
.43 -2.6
2.3
151 - 250
4
0.62
0.5
23.40
10. 3
12.8
41.2 -1.40
1.05 -1.5
1.5
251 - 350
13
0.82
0.6
31.29
26.3
-2.0
50.0 -0.72
.90 -1.0
0.8
MORE THAN 350
2
0.63
0. 2
15.21
18. 1
46.4
30.5 -0.15
.47 -1.2
1.1
~INERTIA WEIGHT









1800 - 2799
1
-0.77
0.0
3.79
0.0
125.5
0.0 -1.01
0.00 -5.1
0.0
2800 - 3799
5
0.30
0.4
19.06
23.8
7.4
49.6 -1.28
1.24 -1.4
1.1
3800 - 4799
15
0.86
0.5
28.49
23. 2
1.3
44.1 -0.60
.76 -1.0
1.0
4800 - 5799
1
0.46
0.0
28.02
0.0
67.9
0.0 -0.48
0.00 -2.0
0.0
ALL VEHICLES
22
0.64
0.6
25.20
22.5
11.4
51.1 -0.77
.87 -1.3
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-16

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES—HOT START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
40.8
0.0
86.8
0.0
-9.9
0.0
-106.0
0.0 -12.7
0.0
CHRYSLER
2
13.6
5.1
34.4
16.8
4.1
7.7
-2.8
14.2 -10.3
2.1
FORD MOTOR CO.
1
1.2
0.0
54.6
0.0
12.5
0.0
-379.5
0.0 -15.2
0.0
GENERAL MOTORS
16
32.6
53.1
50.8
22.8
1.3
9.5
-64.2
64.2 -9.2
9.6
IMPORTS
2
20.6
10.2
50.6
14. 1
0.9
9.0
-25.6
24.4 -5.9
6.1
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
0









1974
0









1975
22
28.7
45.9
51.1
21.9
1.5
9.2
-71.3
90.8 -9.5
8.4
*VEHICLE TYPE










AUTOMOBILE
18
28.3
49.5
52. 1
20.7
1.0
9.7
-65.0
89.6 -9.1
8.5
TRUCK
4
30.3
28.8
46.5
29.9
4. 1
6.7
-99.9
104.3 -11.2
9.4
^VEHICLE OWNER










GSA
3
39.9
26.4
60.5
13.0
3.9
8.2
-129.6
105.0 -13.3
10.3
PRIVATE OWNER
19
26.9
48.5
49.6
22.9
1.2
9.5
-62.1
88.0 -8.9
8.3
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
5
-10.4
81.0
33.6
21.5
10.8
8.2
-107.2
167.7 -13.4
10.9
CNV/NO A.PMP
13
45.5
22.2
55.5
20. 3
-0.8
8.1
-66.4
60.9 -8.3
8.5
A.PMP/NO CNV
2
20.6
10.2
50.6
14.1
0.9
9.0
-25.6
24.4 -5.9
6.1
NO CNV/NO APMP
2
25.4
21.8
66.6
28.7
-5.6
6.1
-59.4
65.9 -10.8
2.7
*DISPLACEMENT










LESS THAN 151
3
-34.7
96.0
44.2
14.9
8.6
14.8
-70.5
79.7 -14.3
15.1
151 - 250
4
31. 1
27.8
50.4
22.8
1.9
7.8
-110.8
93.6 -10.0
10.7
251 - 350
13
38.6
25.9
52.0
25.6
-1.0
8.4
-68.0
100.2 -8.0
6.5
MORE THAN 350
2
54.5
26.7
56.8
3.0
6.6
4.6
-15.3
32.2 -10.8
9.2
*INERTIA WEIGHT









1800 - 2799
1
-145.3
0.0
31.4
0.0
23.9
0.0
-160.3
0.0 -31.0
0.0
2800 - 3799
5
17.6
16.5
52.6
24.7
0. 1
9.4
-118.3
150.2 -8.0
"6.7
3800 - 4799
15
43.5
25.2
51.4
22.7
0.0
7.6
-51.9
64.0 -8.0
7.3
4800 - 5799
1
35.7
0.0
58.9
0.0
9.8
0.0
-38.1
0.0 -17.3
0.0
ALL VEHICLES
22
r-
oo
45.9
51. 1
21.9
1.5
9.2
-71.3
90.8 -9.5
8.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-17

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
HYDROCARBONS (HC)
HOT START DATA
#OF
VEH
BASELINE
MEAN S.D.
AFTER INST.
MEAN S.D.
REDUCTION
MEAN +C.I. S.D.
PERCENT REDUCTION
MEAN iC.I. S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
9
4.33
1.41
3.75
1.12
0.58
0.36
0.59
13.2
8.2
13.3
CHRYSLER
18
3.94
1.47
3.46
1.49
0.48
0.66
1.61
7.5
13.2
32.3
FORD MOTOR CO.
7
4.84
3.40
3.72
1.89
1.12
1.65
2.30
13.0
15.2
21.2
GENERAL MOTORS
21
2.97
2.65
2.22
2.50
0.75
0.51
1.35
26.0
18.4
49.1
IMPORTS
5
2.73
1.73
2.63
1.91
0.10
0.24
0.26
9.0
11.9
13.2
~MODEL YEAR











1968
2
6.18
0.58
5.26
0.73
0.93
0.31
0.15
15.1
7.9
3.8
1969
4
6.86
3.40
5.47
1.49
1.39
2.73
2.56
12.6
26.9
25.3
1970
8
5.63
2.77
4.85
2.19
0.78
1.63
2.48
8.1
16.6
25.2
1971
3
5.68
1.55
3.52
0.80
2.16
2.97
2.19
31.8
48.6
35.8
1972
1
2.80
0.00
2.78
0.00
0.02
0.00
0.00
0.7
0.0
0.0
1973
14
3.86
1.23
3.51
1.01
0.35
0.43
0.92
5.5
10.8
22.9
1974
6
3.65
0.64
3.89
2.09
-0.24
1.22
1.53
-2.3
27.6
34.8
1975
22
1.77
0.76
1.13
0.66
0.64
0.23
0.62
28.7
16.8
45.9
*VEHICLE TYPE











AUT(MOBILE
52
3.71
2.36
3.06
2.05
0.64
0.34
1.47
15.3
8.5
36.2
TRUCK
8
3.38
1.68
2.82
1.63
0.56
0.74
1.13
17.8
21.6
32.9
~VEHICLE OWNER











GSA
21
3.77
1.17
3.35
1.10
0.42
0.30
0.79
10.5
9.0
24.0
PRIVATE OWNER
39
3.60
2.70
2.86
2.33
0.74
0.45
1.66
18.3
10.9
40.5
~CONTROL OPTIONS(CONVERTER,AIR PUMP)







CNV/A.FMP 5	1.15 0.57	1.07	0.54	0.08	0.52	0.57	-10.4	73.0	81.0
CNV/NO A.PMP 13	1.97	0.58 1.05	0.56	0.92	0.27	0.55	45.5	10.9	22.2
A.PMP/NO CNV 13	4.23 2.80	3.93	2.46	0.30	0.82	1.68	5.8	11.1	22.5
NO CNV/NO APMP 29	4.60 1.95	3.86	1.41	0.74	0.52	1.64	11.1	8.3	26.4
~DISPLACEMENT
151 - 250
251 - 350
151
8
2.54
1.56
2.50
1.53
0.05
0.29
0.43
-10.0
36.7
55.8

13
3.73
1.50
3.46
2.16
0.27
0.42
0.85
13.2
11.0
22.4
350
23
3.87
2.99
2.86
2.36
1.02
0.66
1.84
26.5
11.8
33.1
16
3.87
1.85
3.20
1.49
0.66
0.58
1.33
14.7
13.6
31.2
~INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1968-1972
1973-1974
1975
ALL VEHICLES
6
3.01
1.44
3.13
1.28
-0.12
0.29
0.37
-23.2
47.6
60.1
21
4.45
2.85
3.78
2.29
0.67
0.75
2.00
11.3
9.9
26.4
32
3.35
1.86
2.59
1.78
0.75
0.32
1.05
25.1
9.3
31.1
1
1.29
0.00
0.83
0.00
0.46
0.00
0.00
35.7
0.0
0.0
SUMMARY










18
5.82
2.52
4.70
1.77
1.12
0.88
2.14
13.4
10.1
24.7
20
3.80
1.08
3.62
1.37
0.18
0.43
1.13
3.2
10.1
26.3
22
1.77
0.76
1.13
0.66
0.64
0.23
0.62
28.7
16.8
45.9
l 60
3.66
2.27
3.03
1.99
0.63
0.31
1.42
15.6
7.7
35.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-18

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
CARBON MONOXIDE (CO)
HOT START DATA
#OF	BASELINE	AFTER	INST.	REDUCTION	PERCENT REDUCTION
VEH	MEAN	S.D.	MEAN	S.D.	MEAN	+C.I. S.D.	MEAN	±C.I.	S.D.
*VEHICLE MANUFACTURER
AMER. MDTORS 9	80.59	24.67	34.48	21.60	46.11	7.76 12.71	59.5	9.8	16.0
CHRYSLER 18	78.25	26.59	35.53	16.88	42.72	13.14 32.14	50.0	10.1	24.6
FORD MOTOR CO. 7	70.89	36.52	34.56	25.29	36.33	19.05 26.60	51.8	15.4	21.5
GENERAL MOTORS 21	59.28	38.17	24.74	14.82	34.54	11.17 29.75	52.3	8.2	21.7
IMPORTS 5	48.84	26.32	29.15	16.87	19.68	9.96 11.05	43.7	10.6	11.8
~MODEL YEAR
1968	2	129.60	37.51	50.87	10.27	78.73	98.67 47.79	57.8	41.6	20.1
1969	4	103.75	17.12	51.78	10.14	51.97	27.53 25.83	48.1	19.3	18.1
1970	8	74.66	23.64	30.81	21.20	43.85	9.64 14.67	60.8	10.7	16.3
1971	3	102.26	45.11	23.24	12.01	79.03	71.26 52.45	69.5	37.9	27.9
1972	1	41.48	0.00	29.99	0.00	11.49	0.00 0.00	27.7	0.0	0.0
1973	14	76.00	21.46	33.30	11.85	42.70	9.85 20.92	54.4	8.3	17.6
1974	6	74.10	12.63	49.91	21.14	24.20	13.35 16.84	33.5	18.5	23.3
1975	22	45.03	28.07	19.83	13.42	25.20	8.24 22.51	51.1	8.0	21.9
~VEHICLE TYPE
AUTOMOBILE 52	69.36	32.91	32.01	18.65	37.36	6.49 27.84	51.3	4.8	20.8
TRUCK 8	64.03	34.15	24.09	13.02	39.94	16.93 25.74	56.0	15.5	23.6
~VEHICLE OWNER
GSA 21	72.79	24.23	32.34	13.46	40.44	7.19 19.13	54.9	5.8	15.5
PRIVATE OWNER 39	66.43	36.74	30.20	20.30	36.23	8.38 31.06	50.3	6.3	23.5
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP 5	13.23	10.82	9.64	9.03	3.58 2.22 2.46	33.6	19.4	21.5
CNV/NO A.HIP 13	56.89	23.29	24.34	12.80	32.55 10.73 21.85	55.5	10.0	20.3
A.PMP/NO CNV 13	71.58	31.97	34.75	18.22	36.83 10.86 22.10	50.8	8.3	16.9
NO CNV/NO APMP 29	82.17	27.89	35.88	18.27	46.29	9.29 29.45	54.0	7.0	22.2
~DISPLACEMENT
LESS THAN 151 8	49.46	30.67	31.50	20.83	17.96 7.42 11.28	38.5	7.5	11.4
151 - 250 13	67.33	23.03	34.16	16.21	33.17 7.35 14.96	50.4	8.6	17.5
251 - 350 23	68.40	31.52	31.14	21.80	37.25 9.46 26.48	51.4	9.3	26.1
MORE THAN 350 16	79.69	39.87	27.79	12.68	51.90 15.37'35.22	60.6	7.0	16.0
~INERTIA WEIGHT
1800 - 2799
6
50.45
21.77
28.84
14.74
21.61
10.08
12.71
41.4
13.5
17.1
2800 - 3799
21
72.28
31.13
36.62
22.89
35.66
8.90
23.71
49.5
8.5
22.7
3800 - 4799
32
70.34
35.48
27.98
14.67
42.36
9.27
30.97
55.3
6.2
20.6
4800 - 5799
1
47.60
0.00
19.58
0.00
28.02
0.00
0.00
58.9
0.0
0.0
~POPULATION
SUMMARY










1968-1972
18
89.99
33.30
36.39
18.83
53.59
12.94
31.66
57.3
8.0
19.7
1973-1974
20
75.43
18.92
38.28
16.57
37.15
8.18
21.21
48.1
8.2
21.3
1975
22
45.03
28.07
19.83
13.42
25.20
8.24
22.51
51.1
8.0
21.9
ALL VEHICLES
60
68.65
32.83
30.95
18.11
37.70
5.92
27.38
51.9
4.5
21.0
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
902 CONFIDENCE INTERVALS (C.I.)
CARBON DIOXIDE (C02)
HOT START DATA
#OF BASELINE AFTER INST.	REDUCTION PERCENT REDUCTION
VEH MEAN S.D. MEAN S.D. MEAN +C.I. S.D. MEAN lC.1. S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
9
483.33
128.25
503.67
82.10
-20.33
34.63
56.68
-6.8
7.6
12.4
CHRYSLER
18
569.60
121.55
539.75
91.16
29.86
24.92
60.98
3.9
4.1
10.0
FORD MOTOR CO.
7
502.57
139.02
493.73
118.52
8.84
35.42
49.45
0.5
7.1
9.9
GENERAL MOTORS
21
549.19
110.26
551.33
109.89
-2.14
21.82
58.09
-1.0
4.2
11.3
IMPORTS
5
313.94
55.15
315.22
51.91
-1.28
17.75
19.70
-0.7
5.3
5.9
~MODEL YEAR











1968
2
404.35
96.52
516.15
117.59
-111.80 43.51
21.07
-27.8
3.0
1.4
1969
4
447.12
72.57
486.70
47.40
-39.57
43.72
41.01
-9.9
10.8
10.2
1970
8
432.51
73.94
436.75
67.49
-4.24
25.29
38.45
-1.6
6.2
9.5
1971
3
575.13
101.62
607.53
77.15
-32.40
80.89
59.54
-6.6
16.3
12.0
1972
1
385.20
0.00
384.30
0.00
0.90
0.00
0.00
0.2
0.0
0.0
1973
14
612.61
114.04
568.47
89.33
44.14
26.80
56.94
6.4
3.8
8.0
1974
6
358.00
110.50
356.52
80.78
1.48
32.44
40.90
-1.3
6.8
8.5
1975
22
560.51
115.14
549.13
111.76
11.38
18.72
51.14
1.5
3.4
9.2
~VEHICLE TYPE











AUTOMOBILE
52
505.39
131.16
507.90
118.97
-2.51
12.14
52.06
-1.6
2.5
10.5
TRUCK
8
617.89
105.35
555.97
72.24
61.91
38.37
58.34
9.2
5.4
8.2
~VEHICLE OWNER











GSA
21
541.78
145.11
523.31
100.71
18.48
24.67
65.69
0.9
4.7
12.5
PRIVATE OWNER
39
508.87
126.37
509.46
122.36
-0.59
13.81
51.19
-0.8
2.7
10.0
~CONTROL OPT IONS (CONVE RTER, AIR PUMP)







CNV/A.FMP
5
648.16
82.10
582.70
117.33
65.46
37.49
41.60
10.8
7.4
8.2
CNV/NO A.PMP
13
581.36
78.14
584.31
79.21
-2.95
23.17
47.16
-0.8
4.0
8.1
A.PMP/NO CNV
13
485.89
152.17
470.24
118.18
15.65
31.55
64.23
1.4
5.2
10.6
NO CNV/NO APMP
29
486.50
131.73
490,90
111.51
-4.40
17.35
54.99
-2.5
3.6
11.5
~DISPLACEMENT
LESS THAN 151 8 353.24 84.79	340.42 53.29	12.81 31.74 48.26 1.9 6.6 10.1
151 - 250 13 402.70 70.43	417.92 52.44	-15.22 21.28
251 - 350 23 559.69 80.37	557.36 72.16	2.32 18.00
MORE THAN 350 16 643.11 85.91	617.67 45.22	25.44 32.60
~INERTIA WEIGHT
1800 - 2799 6 369.43 102.53	346.07 65.64	23.37 41.69
2800 - 3799 21 423.34 97.26	434.68 76.25	-11.34 17.72
3800 - 4799 32 607.05 79.70	594.70 60.86	12.35 18.57
4800 - 5799 1 691.30 0.00	623.40 0.00	67.90 0.00
~POPULATION SUMMARY
1968-1972 18 453.77 91.27	482.22 90.75	-28.45 20.54
1973-1974 20 536.22 162.61	504.88 130.80	31.34 21.34
1975 22 560.51 115.14	549.13 111.76	11.38 18.72
ALL VEHICLES 60 520.39 132.94	514.31 114.56	6.08 12.31
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E, COLFAX, AURORA, COLO. 80011
43.32
-4.9
5.5
11.2
50.35
-0.2
3.3
9.4
74.68
2.6
5.4
12.5
52.55
4.2
8.4
10.6
47.20
-4.1
4.1
11.0
62.02
1.2
3.1
10.4
0.00
9.8
0.0
0.0
50.25
-7.1
4.9
11.9
55.32
4.1
3.4
8.7
51.14
1.5
3.4
9.2
56.87
-0.2
2.3
10.8
1-20

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
OXIDES OF NITROGEN (NO*)
HOT START DATA
ifOF
VEH
BASELINE
MEAN S.D.
AFTER INST.
MEAN S.D.
REDUCTION
mean Ic.I. S.D.
PERCENT REDUCTION
MEAN +C.I. S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
9
1.98
0.77
2.56
1.05
-0.58
0.48
0.78
-36.1
33.3
54.5
CHRYSLER
18
2.52
0.78
3.40
1.07
-0.87
0.38
0.94
-42.6
21.8
53.5
FORD MOTOR CO.
7
2.40
1.57
2.89
1.00
-0.49
0.96
1.34
-74.3
101.1
141.2
GENERAL MOTORS
21
1.54
0.66
2.10
0.85
-0.56
0.32
0.84
-51.1
24.4
64.9
IMPORTS
5
1.36
0.56
1.96
0.75
-0.60
0.35
0.38
-53.0
33.0
36.7
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
~VEHICLE TYPE
AIJTCMOBILE
TRUCK
*VEHICLE OWNER
GSA
PRIVATE OWNER
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	5 1.73 1.02 2.52 0.92 -0.79 1.27
CNV/NO A.PMP 13 1.18 0.23 1.94 0.79 -0.76 0.35
A.PMP/NO CNV 13 2.25 0.89 2.78' 1.17 -0.53 0.40
NO CNV/NO APMP 29 2.27 0.96 2.91 1.11 -0.64 0.29
~DISPLACEMENT
2
1.91
0.43
2.35
1.90
-0.43
3.02
1.46
-14.5
151.1
73.2
4
2.51
1.38
3.07
0.82
-0.57
0.82
0.77
-39.4
44.2
41.5
8
2.43
0.80
2.21
0.73
0.22
0.44
0.66
5.8
18.2
27.7
3
2.69
1.18
2.39
1.09
0.30
1.57
1.16
0.4
75.1
55.2
1
2.65
0.00
2.94
0.00
-0.29
0.00
0.00
-10.9
0.0
0.0
14
2.47
0.91
3.69
1.03
-1.22
0.33
0.69
-61.2
25.6
54.4
6
1.35
0.63
2.07
0.84
-0.72
0.31
0.39
-62.6
25.5
32.1
22
1.47
0.70
2.25
0.92
-0.77
0.32
0.87
-71.3
33.2
.90.8
52
1.95
0.94
2.46
1.01
-0.52
0.19
0.81
-42.3
15.1
64.9
8
2.24
0.96
3.77
0.95
-1.52
0.63
0.96
-94.2
58.1
88.3
21
2.26
0.95
3.29
1.04
-1.03
0.33
0.88
-62.4
25.6
68.3
39
1.84
0.92
2.29
0.96
-0.45
0.23
0.84
-42.1
19.1
70.6
1.41 -107.2 151.1 167.7
0.72 -66.4 29.9 60.9
0.82 -32.1 23.4 47.6
0.92 -39.2 16.5 52.4
LESS THAN 151
8
1.35
0.74
1.96
0.73
-0.61
0.23
0.35
-63.8
33.5
51.0
151 - 250
13
1.94
0.81
2.60
1.09
-0.66
0.48
0.97
-48.4
36.5
74.2
251 - 350
23
1.95
1.01
2.48
1.06
-0.53
0.32
0.91
-44.9
29.0
81.1
MORE THAN 350
16
2.40
0.91
3.24
1.08
-0.84
0.44
1.01
-48.7
27.0
61.8
~INERTIA WEIGHT










1800 - 2799
6
1.52
0.89
2.21
0.86
-0.68
0.28
0.35
-68.3
44.8
56.5
2800 - 3799
21
1.95
0.86
2.49
1.12
-0.53
0.38
1.02
-43.8
32.9
87.7
3800 - 4799
32
2.12
1.01
2.85
1.10
-0.73
0.27
0.89
-49.5
18.3
61.1
4800 - 5799
1
1.26
0.00
1.74
0.00
-0.48
0.00
0.00
-38.1
0.0
0.0
~POPULATION SUMMARY










1968-1972
18
2.44
0.91
2.49
0.91
-0.04
0.34
0.84
-8.3
16.5
40.4
1973-1974
20
2.13
0.98
3.21
1.22
-1.07
0.25
0.65
-61.6
18.5
47.9
1975
22
1.47
0.70
2.25
0.92
-0.77
0.32
0.87
-71.3
33.2
90.8
ALL VEHICLES
60
1.99
0.94
2.64
1.09
-0.65
0.19
0.89
-49.2
15.1
69.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-21

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
902 CONFIDENCE INTERVALS (C.I.)
MILES PER GALLON (MPG)
HOT START DATA
#0F
VEH
BASELINE
MEAN S.D.
AFTER INST.
MEAN S.D.
~VEHICLE MANUFACTURER
REDUCTION
MEAN +c.I. S.D.
PERCENT REDUCTION
MEAN iC.I. S.D.
AMER. M3T0RS
9
14.94
3.34
15.98
2.68
-1.04
0.73
1.19
-8.6
6.4
10.5
CHRYSLER
18
13.03
2.71
14.95
2.43
-1.91
0.43
1.05
-15.9
4.3
10.5
FORD MOTOR CO.
7
14.45
2.46
16.42
3.20
-1.96
1.24
1.73
-13.6
9.3
12.9
GENERAL MOTORS
21
13.97
2.39
15.33
2.92
-1.36
0.50
1.33
-9.7
3.3
8.8
IMPORTS
5
22.51
2.85
24.50
3.94
-1.99
1.27
1.41
-8.6
4.7
5.2
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
2
14.60
3.66
14.70
2.49
-0.10
2.42
1.17
-1.7
17.5
8.5
4
14.13
1.29
15.31
1.81
-1.19
0.87
0.81
-8.3
6.1
5.7
8
16.07
2.69
18.11
2.55
-2.04
1.18
1.79
-13.7
8.4
12.8
3
11.79
0.49
13.74
2.03
-1.96
2.68
1.97
-16.6
23.0
16.9
1
19.32
0.00
20.16
0.00
-0.84
0.00
0.00
-4.3
0.0
0.0
14
12.33
2.60
14.31
2.29
-1.98
0.49
1.04
-17.4
5.1
10.8
6
19.09
4.35
20.90
5.35
-1.80
0.91
1.15
-9.0
2.7
3.5
22
14.55
3.47
15.89
3.82
-1.34
0.46
1.27
-9.5
3.1
8.4
AUTOMOBILE
TRUCK
52
8
14.92
12.56
3.67
2.34
16.40
14.94
3.96
1.92
-1.48
-2.38
0.30
0.84
1.27
1.28
-10.4
-20.5
2.1
8.2
9.1
12.4
~VEHICLE OWNER











GSA
PRIVATE CWNER
21
39
13.98
14.94
3.25
3.77
15.61
16.53
2.70
4.24
-1.63
-1.59
0.47
0.36
1.26
1.33
-13.5
-10.8
4.4
2.5
11.7
9.1
~CONTROL OPTIONS(CONVERTER,AIR PIMP)







CNV/A.PMP 5
CNV/NO A.PMP 13
A.PMP/NO CNV 13
NO CNV/NO APMP 29
13.36
13.37
15.65
14.90
1.75
2.05
4.54
3.82
15.29
14.41
17.40
16.63
3.51
2.00
4.32
4.01
-1.93
-1.04
-1.75
-1.73
1.66
0.54
0.53
0.43
1.84
1.09
1.07
1.36
-13.4
-8.3
-12.9
-12.6
9.8
4.2
5.1
3.4
10.9
8.5
10.3
10.6
~DISPLACEMENT











LESS THAN 151.
151 - 250
251 - 350
MORE THAN 350
8
13
23
16
20.69
17.21
13.21
11.44
3.41
1.66
1.47
0.90
22.81
18.53
14.63
13.27
3.85
1.70
1.86
0.93
-2.12
-1.32
-1.42
-1.83
1.09
0.67
0.44
0.48
1.66
1.37
1.24
1.11
-10.6
-8.0
-11.0
-16.6
6.1
4.2
3.5
4.8
9.3
8.5
9.9
10.9
*INERTIA WEIGHT
1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1968-1972
1973-1974
1975
ALL VEHICLES
6
19.80
3.46
22.55
3.85
-2.74
1.35
1.70
-14.4
8.0
10.0
21
16.70
3.28
18.12
3.20
-1.41
0.47
1.26
-9.2
3.4
9.0
32
12.34
1.40
13.84
1.39
-1.50
0.36
1.19
-12.8
3.2
10.8
1
11.52
0.00
13.51
0.00
-1.99
0.00
0.00
-17.3
0.0
0.0
SUMMARY










18
14.94
2.78
16.49
2.86
-1.55
0.64
1.56
-11.1
4.7
11.6
20
14.36
4.44
16.29
4.55
-1.93
0.40
1.04
-14.9
3.8
10.0
22
14.55
3.47
15.89
3.82
-1.34
0.46
1.27
-9.5
3.1
8.4
60
14.60
3.60
16.20
3.78
-1.60
0.28
1.30
-11.8
2.2-
10.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
1-22

-------
APPENDIX J
TABLES OF TEST RESULTS
ALL VEHICLES
PAGE
J-2
1968-1972
PAGE
J-6
1973-1974
PAGE
J-10
1975
PAGE
J-14
STATISICAL SUMMARY
PAGE
J-18
J-l

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES—COLD START DATA)
(BASELINE)
8 OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
3
6.62
4.6
121.77
46.5
571.7
151.6
1.51
.51
12.1
4.0
CHRYSLER
12
4.78
1.5
89.00
25.2
611.5
111.6
2.99
1.02
11.9
2.0
FORD MOTOR CO.
4
5.97
4.3
64.98
39.7
616.3
108.5
3.18
1.58
12.1
0.9
GENERAL MOTORS
21
3.52
3.2
67.34
40.7
563.9
113.9
1.58
.59
13.3
2.2
IMPORTS
3
2.47
2.3
41.06
29.7
350.8
10.2
1.45
.35
21.2
2.6
*MODEL YEAR











1968
1
6.84
0.0
161.97
0.0
492.4
0.0
2.34
0.00
11.6
0.0
1969
3
9.72
4.4
121.49
28.1
486.1
65.1
2.88
1.24
12.5
0.5
1970
4
9.30
2.2
111.70
28.0
478.9
99.6
2.51
1.07
13.4
2.7
1971
2
5.38
1.9
93.53
51.1
640.6
109.6
3.27
.52
11.0
0.3
1972
1
3.22
0.0
51.96
0.0
405.2
0.0
2.73
0.00
17.9
0.0
1973
9
4.89
1.3
92.31
24.5
626.5
147.4
2.69
1.43
11.9
3.2
1974
1
5.39
0.0
89.26
0.0
5 74.4
0.0
2.02
0.00
12.1
0.0
1975
22
2.09
0.8
49.92
27.7
574.9
119.8
1.56
.69
14.1
3.4
* VEHICLE TYPE











AUTOMOBILE
35
4.31
3.3
76.44
40.7
552.8
123.7
2.08
1.11
13.5
3.3
TRUCK
8
3.97
1.8
69.40
34.5
633.4
113.2
2.27
.94
12.2
2.4
*VEHICLE OWNER











GSA
10
4.42
1.5
81.98
32.2
628.0
128.6
2.41
1.06
12.0
2.7
PRIVATE OWNER
33
4.19
3.4
73.05
41.4
549.5
119.3
2.02
1.08
13.7
3.2
"CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.53
0.7
19.26
12.0
664.5
85.2
1.77
1.01
12.8
1.7
CNV/NO A.PMP
13
2.33
0.6
62.33
23.4
596.9
83.3
1.28
.23
12.9
2.0
A.PMP/NO CNV
10
5.23
4.1
84.06
43.4
491.1
164.9
2.29
.77
15.2
4.9
NO CNV/NO APMP
15
6.15
2.5
98.88
31.4
561.4
112.7
2.83
1.22
12.4
2.5
~DISPLACEMENT











LESS THAN 151
5
2.33
1.8
38.43
24.6
399.5
82.2
1.55
.78
19.4
3.2
151 - 250
6
3.80
2.1
65.40
22.9
450.8
83.5
2.06
1.04
15.8
1.5
251 - 350
22
4.69
3.7
78.80
37.8
581.8
79.7
2.10
1.20
12.4
1.3
MORE THAN 350
10
4.48
2.1
91.22
46.7
691.1
92.1
2.45
.92
10.5
0.9
*INERTIA WEIGHT











1800 - 2799
3
3.08
2.0
46.37
27.0
433.9
94.9
1.51
1.08
17.3
1.5
2800 - 3799
13
5.71
4.4
80.02
43.7
471.0
113.6
2.32
1.28
15.3
4.0
3800 - 4799
26
3.75
2.0
77.03
38.5
625.8
87.9
2.11
.99
11.9
1.6
4800 - 5799
1
1.50
0.0
48.41
0.0
717.4
0.0
1.33
0.00
11.1
0.0
ALL VEHICLES
43
4.24
3.0
75. 13
39.3
567.8
124.6
2.11
1.08
13.3
3.1
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-2

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
* VEHICLE MANUFACTURER
AMER. MOTORS
3
5.18
4.6
57.13
49.3
550.6
81.8
2.83
.99
14.1
3.9
CHRYSLER
12
4.35
2.0
45.47
23.0
566.1
78.6
3.61
1.13
13.8
1.5
FORD MOTOR CO.
4
4.55
2.8
34.17
29.4
590.9
105.2
3.51
.44
13.8
2.5
GENERAL MOTORS
21
2.64
2.5
30.21
18.0
567.2
114.9
2.18
.78
14.7
2.8
IMPORTS
3
2.37
2.4
27.91
24.0
345.6
10.7
1.86
.22
22.6
2.9
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
1
6.15
0.0
52.02
0.0
623.3
0.0
3.66
0.00
12.2
0.0
3
7.73
0.3
77.30
10.0
520.6
30.6
3.26
.43
13.3
0.7
4
7.81
2.6
52.26
39.6
464.1
100.8
1.90
.79
16.2
3.6
2
3.87
0.8
25.53
15.8
638.4
116.3
2.46
1.48
13.1
2.7
1
3.34
0.0
39.77
0.0
400.1
0.0
2.98
0.00
18.8
0.0
9
4.00
1.0
42.54
11.7
567.7
112.3
3.83
1.15
14.1
2.7
1
8.12
0.0
87.24
0.0
495.9
0.0
2.40
0.00
13.5
0.0
22
1.48
0.8
23.55
15.3
565.2
116.9
2.34
.86
15.3
3.7
AUTOMOBILE
TRUCK
35
8
3.50
3.22
2.8
1.6
38.32
28.85
25.5
14.5
548.0
572.2
118.2
76.5
2.49
3.75
.99
.90
15.0
14.4
*VEHICLE OWNER










GSA
PRIVATE OWNER '
10
33
3.60
3.41
1.3
2.9
36.74
36.50
15.2
26.3
571.5
546.7
95.0
116.4
3.89
2.37
.68
.93
14.1
15.1
*CONTROL OPT IONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
5
13
10
15
1.43
1.44
4.33
5.28
0.7
0.8
2.8
2.4
13.42
28.02
42.23
47.89
11.1
14.8
18.2
29.5
601.5
600.3
468.3
550.8
124.7
84.3
119.1
97.1
2.52
2.09
2.81
3.29
.87
.74
1.16
1.12
14.7
13.9
17.2
14.2
^"DISPLACEMENT










LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
5
6
22
10
2.45
3.73
3.58
3.49
1.8
3.1
3.0
1.8
27.22
38.91
39.55
33.23
19.5
18.7
28.9
16.9
369.0
445.8
579.1
649.7
33.1
69.7
73.3
59.2
2.04
3.08
2.56
3.22
.55
1.41
.99
1.14
21.4
17.2
13.8
12.5
*INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
3
13
26
1
3.44
4.70
2.93
0.91
1.7
3.4
2.1
0.0
35.08
42.72
34.37
17.68
20.6
31.9
20.2
0.0
384.8
465.6
611.8
643.4
33.7
94.9
71.4
0.0
2.08
2.82
2.79
1.82
.78
1.26
1.04
0.00
19.7
17.0
13.3
13.2
ALL VEHICLES
43
3.45
2.6
36.56
24.0
552.5
111.3
2.73
1.08
14.9
3.5
1.9
2.2
3.5
3.4
2.0
4.5
2.7
2.7
1.6
1.8
1.1
0.9
4.0
1.5
0.0
3.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-3

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO
VEH. MEAN S.D. MEAN
S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
3
1.44
0.8
64.64
23.9
21.0
79.7 -1.32
.86 -2.1
1.3
CHRYSLER
12
0.44
1.6
43.52
31.9
45.4
57.2 -0.62
1.12 -1.9
1.2
FORD MOTOR CO.
4
1.42
2.9
30.81
31.9
25.3
53.7 -0.33
1.85 -1.7
2.1
GENERAL MOTORS
21
0.88
1.7
37.13
29.9
-3.2
60.1 -0.59
.79 -1.3
1.4
IMPORTS
3
0.10
0.3
13.15
6.5
5.2
20.0 -0.42
.26 -1.4
0.8
~MODEL YEAR









1968
1
0.69
0.0
109.95
0.0
-130.9
0.0 -1.32
0.00 -0.7
0.0
1969
3
1.99
4.6
44.19
32.1
-34.5
48.4 -0.38
.86 -0.8
0.8
1970
4
1.50
3.1
59.44
14.3
14.9
27.3 0.61
.62 -2.9
1.6
1971
2
1.51
2.8
68.00
66.8
2.2
6.6 0.82
.97 -2.1
2.4
1972
1
-0.12
0.0
12.19
0.0
5.1
0.0 -0.25
0.00 -0.9
0.0
1973
9
0.89
1.0
49.7 7
25.6
58.8
62.9 -1.13
.96 -2.2
1.2
1974
1
-2.73
0.0
2.02
0.0
78.5
0.0 -0.38
0.00 -1.3
0.0
1975
22
0.60
0.7
26.37
22.3
9.7
53.3 -0.78
.85 -1.2
1.3
~VEHICLE TYPE









AUTOMOBILE
35
0.80
1.8
38.12
31.5
4.8
54.8 -0.42
.88 -1.4
1.3
TRUCK
8
0.75
1.0
40.56
24.6
61.2
61.5 -1.48
.94 -2.2
1.4
~VEHICLE OWNER









GSA
10
0.82
1.0
45. 24
25.8
56.5
63.7 -1.48
, .89 -2.1
1.4
PRIVATE OWNER
33
0.78
1.8
36.55
31.3
2.8
53.2 -0.35
.85 -1.4
1.3
~CONTROL OPTIONS
1 (CONVERTER,AIR
PUMP)





CNV/A.PMP
5
0.11
0.7
5.84
3.0
63.0
47.2 -0.76
1.37 -1.8
1.8
CNV/NO A.PMP
13
0.89
0.6
34.31
22.3
-3.4
50.0 -0.81
.70 -1.0
1.1
A.PMP/NO CNV
10
0.90
2.4
41.83
30.2
22.8
71.2 -0.52
.96 -1.9
1.2
NO CNV/NO APMP
15
0.87
2.0
51.00
33.5
10.5
58.4 -0.46
1.11 -1.8
1.4
~DISPLACEMENT









LESS THAN 151
5
-0.13
0.5
11.22
6.0
30.5
58.3 -0.49
.33 -2.0
1.7
151 - 250
6
0.06
1.0
26.49
14.9
5.0
35.3 -1.02
1.24 -1.4
1.5
251 - 350
22
1. 11
2.1
39.25
27.1
2.7
52.0 -0.46
.87 -1.3
1.2
MORE THAN 350
10
0.99
1.2
57.99
37.9
41.4
82.1 -0.77
1.24 -2.0
1.3
~INERTIA WEIGHT
1800 - 2799
3
-0.
,36
0
.4
11.
,29
6.
4
49.1
71.5
2800 - 3799
13
1.
,01
2
.7
37.
30
28.
8
5.3
46.2
3800 - 4799
26
0.
83
1
.0
42.
. 66
31.
8
14.1
64.9
4800 - 5799
1
0.
,59
0
.0
30.
,73
0.
0
74.0
0.0
ALL VEHICLES
43
0.
,79
1
.7
38.
,57
30.
1
, 15.3
59.6
.36
.17
.96
-2.4
-1.7
-1.4
-2.1
2.1
1.3
1.3
0.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-4

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(ALL VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
C02
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
3
28.
,9
16.
,5
59.
,1
28.
.0
1.
.5
12.7
-97.
,7
80.
.8
-18.
9
15.9
CHRYSLER
12
8.
.3
27.
.8
45.
,7
25.
.3
6.
.4
8.2
-30.
,3
59.
,4
-17.
5
12.5
FORD MOTOR CO.
4
12.
,1
28.
,3
45.
.9
25,
,0
3.
.8
8.9
-78.
,9
186.
,8
-13.
8
17.0
GENERAL MOTORS
21
25.
.5
36.
,3
51.
.2
21.
.1
-1,
.1
11.3
-49.
,5
60.
.1
-10.
0
9.4
IMPORTS
3
6.
,6
19.
,1
38.
,7
13,
.8
1,
.4
5.8
-32.
.1
22.
,1
-6.
6
3.4
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
1
10.1
0.0
67.9
0.0
-26.6
0.0
-56.4
0.0 -6.1
0.0
3
9.7
36.9
33.8
17.5
-8.1
11.5
-22.3
34.2 -6.4
6.0
4
13.2
30.7
56.8
21.8
3.1
5.1
20.9
29.6 -21.2
12.1
2
20.3
43.8
62.5
37.3
0.4
1.1
27.6
33.9 -18.7
21.3
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0 -5.1
0.0
9
16.5
16.6
51.5
18.2
8.2
8.6
-66.4
72.1 -20.8
13.6
1
-50.6
0.0
.2.3
0.0
13.7
0.0'
-18.8
0.0 -11.0
0.0
22
25.6
34.7
49.6
21.9
1.2
9.3
-68.1
84.8 -9.1
8.9
35
8
15.3
18.4
33.4
23.4
47.8
53.5
GSA	10
PRIVATE OWNER 33
18.7 22.7 53.7
18.3 34.1 47.4
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP 5	-0.5	53.1	35.0
CNV/NO A.PMP 13	39.2	22.2	54.2
A.PMP/NO CNV 10	10.5	22/6	46.5
NO CNV/NO APMP 15	11.8	28.4	50.5
*DISPLACEMENT
22.8 0.2 9.9 -40.0 73.5 -11.2 10.5
19.7 8.7 8.8 -88.7 81.4 -19.8 13.7
16.5	7.8 9.2 -92.4 81.1 -19.8 14.5
23.6	-0.0 9.9 -35.9 71.1 -10.7 9.7
22.4	10.2	8.9	-99.1	157.9	-13.1	11.1
20.7	-0.9	8.3	-65.6	56.4	-8.4	9.1
15.0	2.3	11.5	-31.6	63.5	-15.2	13.0
26.8	1.0 10.6	-29.7	57.6	-15.0	12.5
LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
5
6
22
10
-13.2
10.8
24.9
24.1
41.0
28.4
29.7
25.4
33.1
42.1
48.8
61.1
12.4
20.4
24.8
15.2
6.0
0.6
-0.1
4.7
11.1
6.7
9.3
13.2
-49.3
-70.2
-42.4
-50.8
54.6	-11.3
93.1 -9.3
78.5 -11.0
79.7	-19.6
*INERTIA WEIGHT








1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
3
13
26
1
-29.5
10.9
26.8
39.3
45.5
29.0
26.6
0.0
24.7
46.6
52.3
63.5
1.4
24.2
21.2
0.0
9.5
0.1
1.4
10.3
12.9
9.3
10.4
0.0
-65.4
-44.9
-49.7
-36.8
68.1	-14.9
102.3 -12.2
66.2	-12.7
0.0 -18.4
ALL VEHICLES
43
18.4
31.5
48.9
22.2
1.8
10.2
-49.0
76.4 -12.8
13.7
14.3
9.6
12.6
0.0
AUTOMOTIVE TESTING LABORATORIES.INC.
1'9900 E. COLFAX, AURORA, COLO. 80011
J-5

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)
(BASELINE)
it OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
11.46
0.0
153.54
0.0
576.0
0.0
1.53
0.00
10.4
CHRYSLER
2
6.60
0.2
125.43
5.9
545.4
25.0
2.60
.43
11.6
FORD MOTOR CO.
3
7.62
3.4
82.69
21.9
587.7
113.0
3.96
.33
12.0
GENERAL MOTORS
5
7.93
4.2
111.96
44.5
424.6
58.3
2.34
.39
14.6
IMPORTS
0









0.0
0.5
1.1
2.7
0
*M0DEL YEAR
1968	1
1969	3
1970	4
1971	2
1972	1
1973	0
1974	0
1975	0
*VEHICLE TYPE
AUTOMOBILE	11 7.93 3.3 110.21 36.8 504.8 100.5 2.76 .88 13.0 2.4
TRUCK	0
•VEHICLE OWNER
GSA	1 4.03 0.0 57.43 0.0 718.1 0.0 3.64 0.00 10.8 0.0
PRIVATE OWNER 10 8.32 3.2 115.48 34.1 483.5 75.2 2.67 .87 13.2 2.4
6.84
0.0
161.97
0.0
492.4
0.0
2.34
0.00
11.6
0.0
9.72
4.4
121.49
28.1
486. 1
65.1
2.88
1.24
12.5
0.5
9.30
2.2
111.70
28.0
478.9
99.6
2.51
1.07
13.4
2.7
5.38
1.9
93.53
51.1
640.6
109.6
3.27
.52
11.0
0.3
3.22
0.0
51.96
0.0
405.2
0.0
2.73
0.00
17.9
0.0
•CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP
0









A.PMP/NO CNV
4
8. 20
4.8
99.45
40.0
407 .6
51.1
2.34
.45
15. 3
NO CNV/NO APMP
7
7.77
2.6
116.35
36.6
560.3
74.9
2.99
1.00
11.6
•DISPLACEMENT










LESS THAN 151
1
3.22
0.0
51.96
0.0
405.2
0.0
2.73
0.00
17.9
151 - 250
1
7.94
0.0
101.14
0.0
344.6
0.0
1.87
0.00
16.8
251 - 350
6
9.74
3.1
118.35
27.7
504.9
57.0
2.80
1.09
12.4
MORE THAN 350
3
5.87
1.6
116.35
53.5
591.2
115.4
2.96
.65
11.2
*INERTIA WEIGHT










1800 - 2799
1
3.22
0.0
51.96
0.0
405.2
0.0
2.73
0.00
17.9
2800 - 3799
5
10.38
3.0
119.29
29.6
465.4
91.4
2.42
.95
13.3
3800 - 4799
5
6.42
1.5
112.77
39.4
564. 1
89.7
3.10
.86
11.7
4800 - 5799
0









ALL VEHICLES
11
7.93
3.3
110.21
36.8
504.8
100.5
2.76
CO
00
13.0
2.4
0.9
0.0
0.0
1.1
0.4
0.0
2.3
0.8
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-6

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)


(BASELINE-INSTALLATION OF DEVICE)




//
OF
HC

CO

C02
NOX
MPG
VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
*VEHICLE MANUFACTURER









AMER. MOTORS
1
10.33
0.0
108.74
0.0
584.9
0.0
1.85
0.00
11.2
0.0
CHRYSLER
2
5.64
3.3
51.46
52.4
535.0
29.9
2.14
1.04
14.1
1.4
FORD MOTOR CO.
3
5.74
1.7
43.47
27.9
582.0
126.9
3.38
.43
13.7
3.1
GENERAL MOTORS
5
6. 56
2.3
48.35
14.2
463.5
107.4
2.53
1.09
16.4
3.2
IMPORTS
0









*MODEL YEAR











1968 .
1
6.15
0.0
52.02
0.0
623.3
0.0
3.66
0.00
12.2
0.0
1969
3
7.73
0.3
77.30
10.0
520.6
30.6
3.26
.43
13.3
0.7
1970
4
7.81
2.6
52. 26
39.6
464. 1
100.8
1.90
.79
16.2
3.6
1971
2
3.87
0.8
25. 53
15.8
638.4
116.3
2.46
1.48
13. 1
2.7
1972
1
3.34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
1973
0










1974
0










1975
0










* VEHICLE TYPE











AUTOMOBILE
11
6.51
2.4
53.07
29. 3
519.8
105.6
2.63
.95
14.8
3.0
TRUCK
0










* VEHICLE OWNER











GSA
1
4.46
0.0
36.68
0.0
720.6
0.0
3.51
0.00
11.2
0.0
PRIVATE OWNER
10
6.72
2.4
54.71
30.4
499.8
86.3
2.54
.95
15.1
2.9
^CONTROL OPTIONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
6.66
2.6
47.43
16.3
423.5
68.8
2.25
1.02
17.4
2.5
NO CNV/NO APMP
7
6.43
2.4
56.30
35.6
574.9
80. 5
2.85
.91
13.2
2.2
*DISPLACEMENT











LESS THAN 151
1
3.34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
151 - 250
1
9.63
0.0
49. 33
0.0
338.4
0.0
0.96
0.00
19.9
0.0
251 - 350
6
7.46
1.8
65.27
33.9
513.3
48.1
2.74
.73
14.2
2.3
MORE THAN 350
3
4.63
1.4
34.36
18.9
633.4
82.7
2.86
1.26
12.8
2.0
*INERTIA WEIGHT











1800 - 2799
1
'3.34
0.0
39.77
0.0
400. 1
0.0
2.98
0.00
18.8
0.0
2800 - 3799
5
7.73
2.2
55.65
35. 1
470.1
88. 3
2.16
.89
15.8
3.3
3800 - 4799
5
5.93
2.0
53.15
29.4
593.6
81.1
3.04
.97
12.9
1.4
4800 - 5799
0










ALL VEHICLES
11
6.51
2.4
53.07
29. 3
519.8
105.6
2.63
.95
14.8
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-7

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1968-1972 VEHICLES—COLD START DATA)


(BASELINE-INSTALLATION
OF DEVICE)




# OF
HC

CO

C02
NOX
MPG

VEH.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN
S.D.
MEAN S.D.
*VEHICLE MANUFACTURER








AMER. MOTORS
1
1. 13
0.0
44.80
0.0
-8.9
0.0
-0.32
0.00
-0.9 0.0
CHRYSLER
2
0.96
3.5
73.97
58.4
10.4
, 4.9
0.46
1.47
-2.4 1.9
FORD MOTOR CO.
3
1.88
3.4
39. 23
33.2
5.7
45.0
0.58
.45
-1.7 2.6
GENERAL MOTORS
5
1. 37
3.4
63.61
36.1
-38.9
64.3
-0.19
1.04
-1.8 1.1
IMPORTS
0









*MODEL YEAR










1968
1
0.69
0.0
109.95
0.0 -
130.9
0.0
-1.32
0.00
-0.7 0.0
1969
3
1.99
4.6
44.19
32.1
-34.5
48.4
-0.38
.86
-0.8 0.8
1970
4
1.50
3. 1
59.44
14.3
14.9
27.3
0.61
.62
-2.9 1.6
1971
2
1.51
2.8
68.00
66.8
2.2
6.6
0.82
.97
-2.1 2.4
1972
1
-0. 12
0.0
12.19
0.0
5.1
0.0
-0.25
0.00
-0.9 0.0
1973	0
1974	0
1975	0
*VEHICLE TYPE
AUTOMOBILE
TRUCK
11
0
1.41
2.9
57.13
35.7
-15.0
51.1
0.12
.92 -1.8
1.6
*VEHICLE OWNER










GSA
PRIVATE OWNER
1
10
-0.43
1.60
0.0
3.0
20.75
60.77
0.0
35.4
-2.5
-16.3
0.0
53.7
0.13
0.12
0.00 -0.4
.97 -1.9
0.0
1.6
~CONTROL OPTIONS
(CONVERTER,AIR
PUMP)






CNV/A.PMP
CNV/NO A.PMP
A.PMP/NO CNV
NO CNV/NO APMP
0
0
4
7
1.54
1.34
3.9
2.5
52.02
60.05
29.0
40.9
-15.9
-14.6
44.6
57.9
0.09
0.14
.96 -2.1
.97 -1.6
1.1
1.8
~DISPLACEMENT










LESS THAN 151
151 - 250
251 - 350
MORE THAN 350
1
1
6
3
-0. 12
-1.69
2.27
1.24
0.0
0.0
3.4
2.0
12.19
51.81
53.09
81.98
0.0
0.0
24.8
53.1
5.1
6.2
-8.4
-42.2
0.0
0.0
46.7
77.0
-0.25
0.91
0.07
0.10
0.00 -0.9
0.00 -3.1
.86 -1.8
1.41 -1.6
0.0
0.0
1.7
1.9
~INERTIA WEIGHT










1800 - 2799
2800 - 3799
3800 - 4799
4800 - 5799
1
5
5
0
-0.12
2.64
0.49
0.0
3.7
1.9
12.19
63.64
59.62
0.0
15.6
48.7
5.1
-4.7
-29.4
0.0
49.7
59.7
-0.25
0.26
0.06
0.00 -0.9
.94 -2.6
1.08 -1.2
0.0
1.5
1.5
ALL VEHICLES
11
1.41
2.9
57.13
35.7
-15.0
51.1
0.12
.92 -1.8
1.6
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO.' 80011
J-8

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1968-19 72 VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO 2
MEAN S.D.
^VEHICLE MANUFACTURER
NOX	MPC
MEAN S.D. MEAN S.D.
AMER. MOTORS
1
9.9
0.0
29.2
0.0
-1.5
0.0
-20.9
0.0
CHRYSLER
2
13.8
53.1
57.9
43.8
1.9
1.0
13.2
54.3
FORD MOTOR CO.
3
15.5
33.7
45.6
30.6
1.1
8.6
14.3
11.4
GENERAL MOTORS
5
9.0
26.0
52.7
18.0
-8.4
13.9
-8.4
47.9
IMPORTS
0








-8.2
-21.3
0.0
17.6
20.8
7.1
*MODEL YEAR
1968
1
10. 1
0.0
67.9
0.0
-26.6
0.0
-56.4
0.0
-6.1
0.0
1969
3
9.7
36.9
33.8
17.5
-8.1
11.5
-22.3
34.2
-6.4
6.0
1970
4
13.2
30.7
56.8
21.8
3.1
5. 1
20.9
29.6
-21.2
12.1
1971
2
20. 3
43.8
62.5
37. 3
0.4
1.1
27.6
33.9
-18.7
21.3
1972
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0
-5. 1
0.0
1973
0










1974
0










1975
0










*VEHICLE TYPE
AUTOMOBILE
TRUCK
11
0
11.7 28.1 49.6 24.0 -3.3 10.8
0.6 37.6 -13.9 12.4
*VEHICLE OWNER
GSA
PRIVATE OWNER
1 -10.7 0.0 36.1 0.0 -0.3 0.0 3.6
10 14.0 28.6 50.9 24.8 -3.6 11.3 0.3
0.0 -3.6 0.0
39.6 -14.9 12.6
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
A.PMP/NO CNV
4
8.8
30.0
48.9
18.3
-3.9
10.9
3.6
45.8
NO CNV/NO APMP
7
13.4
29.2
50.0
28. 1
-3.0
11.6
-1.1
36.0
^DISPLACEMENT









LESS THAN 151
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0
151 - 250
1
-21.3
0.0
51.2
0.0
1.8
0.0
48.7
0.0
251 - 350
6
17.2
29.3
46. 2
24.2
-2.3
10.4
-5.3
33.7
MORE THAN 350
3
16.9
31.6
64.3
26.6
-8.6
15.6
-0.4
54.1
*INERTIA WEIGHT









1800 - 2799
1
-3.7
0.0
23.5
0.0
1.3
0.0
-9.2
0.0
2800 - 3799
5
20.4
31.1
56.2
18.9
-1.6
11.3
5.8
42.5
3800 - 4799
5
6.1
28.5
48. 1
29.1
-5.9
12.1
-2.7
40.7
-5.1
-5.1
7.2
0.0
0.0
13.2
0.0
LI.5
4800 - 5799
ALL VEHICLES 11 11.7 28.1 49.6 24.0 -3.3 10.8
0.6 37.6 -13.9 12.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-9

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
1
6.16
0.0
143.38
0.0
721.1
0.0
1.00
0.00
9.2
0.0
CHRYSLER
8
4.78
1.3
88.32
15.1
641.8
115.2
3.02
1.23
11.4
2.1
FORD MOTOR CO.
0










GENERAL MOTORS "
0










IMPORTS
1
5.03
0.0
70.11
0.0
356.7
0.0
1.11
0.00
00
0.0
~MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
9
4.89
1.3
92.31
24.5
626.5
147.4
2.69
1.43
11.9
3.2
1974
1
5.39
0.0
89.26
0.0
574.4
0.0
2.02
0.00
12.1
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
4.54
1.3
89.15
27.9
557.0
141.9
2.68
1.71
13.1
3.4
TRUCK
4
5.53
0.7
96.29
16.5
717.7
67.2
2.55
.82
10.1
0.8
*VEHICLE OWNER











GSA
6
5.35
1.0
100.96
25.6
668.9
131.8
2.39
.96
10.9
2.6
PRIVATE OWNER
4
4.32
1.4
78.56
10.8
549.7
135.7
2.98
1.94
13.4
3.3
~CONTROL OPTIONS(CONVERTER,AIR PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
4
4.27
1.6
97.44
33.5
646.3
154.4
2.58
1.06
11.5
3.1
NO CNV/NO APMP
6
5.39
0.6
88.37
15.8
604.6
141.8
2.65
1.63
12.2
3.2
~DISPLACEMENT











LESS THAN 151
1
5.03
0.0
70.11
0.0
356.7
0.0
1.11
0.00
18.4
0.0
151 - 250
1
3.82
0.0
77.24
0.0
421.9
0.0
3.15
0.00
16.0
0.0
251 - 350
3
5.44
0.9
90.48
4.7
595.5
22.2
3.39
1.92
11.8
0.5
MORE THAN 350
5
4.85
1.5
100.25
30.6
729.5
35.2
2.37
1.08
9.9
0.8
~INERTIA WEIGHT











1800 - 2799
1
5.03
0.0
70.11
0.0
356.7
0.0
1.11
0.00
18.4
0.0
2800 - 3799
3
4.58
0.8
84.34
6.3
530.0
94.1
3.59
1.82
13.3
2.3
3800 - 4799
6
5.11
1.5
99.48
27.4
711.0
55.1
2.40
.97
10.1
0.9
4800 - 5799
0










ALL VEHICLES
10
4.94
1.2
92.00
23.2
621.2
139.9
2.63
1.36
11.9
3.0
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-10

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	C02	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
3.86
0.0
52. 14
0.0
609.7
0.0
2.82
0.00
12.6
0.0
CHRYSLER
8
4.38
1.8
45.63
20.1
581.1
87.7
4.05
.95
13.5
1.6
FORD MOTOR CO.
0










GENERAL MOTORS
0










IMPORTS
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
o.o'o
19.9
0.0
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
9
4.00
1.0
42.54
11.7
567.7
112.3
3.83
1.15
14.1
2.7
1974
1
8.12
0.0
87.24
0.0
495.9
0.0
2.40
0.00
13.5
0.0
1975
0










*VEHICLE TYPE











AUTOMOBILE
6
4.35
2.1
54.59
18.3
525.0
121.5
3.31
1.37
14.6
3.0
TRUCK
4
4.51
0.6
35.63
10.8
613.8
65.4
4.24
.58
13.1
1.4
*VEHICLE OWNER











GSA
6
4.22
0.6
42.36
13.6
582.8
89.6
4.06
.77
13.6
1.8
PRIVATE OWNER
4
4.69
2.6
53.97
23.4
527.0
139.0
3.11
1.56
14.7
3.5
~CONTROL OPT IONS(CONVERTER,AIR
PUMP)







CNV/A.PMP
0










CNV/NO A.PMP
0










A.PMP/NO CNV
'4
3.68
1.4
50.45
7.6
574.6
99.6
3.79
.92
13.5
2.0
NO CNV/NO APMP
6
4.90
1.7
44.71
23.0
551.1
122.0
3.61
1.40
14.3
2.9
~DISPLACEMENT











LESS THAN 151
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
0.0
151 - 250
1
3.46
0.0
59.50
0.0
432.0
0.0
4.60
0.00
16.5
0.0
251 - 350
3
5.29
2.5
50.14
32.3
543.1
54.5
3.71
1.43
13.9
1.0
MORE THAN 350
5
3.92
1.2
41.45
10.4
639.5
35.7
3.90
.86
12.4
0.4
~INERTIA WEIGHT











1800 - 2799
1
5.17
0.0
52.90
0.0
346.2
0.0
1.62
0.00
19.9
0.0
2800 - 3799
3
5.01
2.7
60.47
26.3
510.2
86.2
4.08
1.49
14.4
1.8
3800 - 4799
6
3.98
1.1
39.29
10.7
621.4
54.7
3.83
.79
12.8
1.1
4800 - 5799
0










ALL VEHICLES
10
4.41
1.6
47.01
17.9
560.5
108.3
3.68
1.17
14.0
2.5
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-ll

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1973-1974 VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
#	OF HC CO C02 NOX MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS	1 2.30 0.0 91.24 0.0 111.4 0.0 -1.82 0.00 -3.4 0.0
CHRYSLER	8 0.39 1.5 42.69 24.9 60.7 62.1 -1.03 1.00 -2.0 1.2
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1 -0.14 0.0 17.21 0.0 10.5 0.0 -0.51 0.00 -1.5 0.0
~MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	9 0.89 1.0 49.77 25.6 58.8 62.9 -1.13 .96 -2.2 1.2
1974	1 -2.73 0.0 2.02 0.0 78.5 0.0 -0.38 0.00 -1.3 0.0
1975	0
*VEHICLE TYPE
AUTOMOBILE	6 0.20 1.7 34.56 32.3 32.0 50.7-0.63 .84-1.5 1.0
TRUCK	4 1.03 1.2 60.65 12.3 103.9 47.7 -1.69 .74 -3.0 0.8
~VEHICLE OWNER
GSA	6 1.13 1.1 58.60 25.3 86.1 60.0 -1.67 .59 -2.7 1.2
PRIVATE OWNER	4 -0.37 1.7 24.59 20.9 22.7 38.4 -0.13 .39 -1.3 0.3
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP	0
A.PMP/NO CNV	4 0.59 1.2 47.00 32.8 71.7 86.7 -1.20 .83 -2.1 1.6
NO CNV/NO APMP	6 0.49 1.7 43.66 28.5 53.5 41.7-0.961.07-2.1 1.0
~DISPLACEMENT
LESS THAN 151
1
-0.14
0.0
17.21
0.0
10.5
0.0 -0.51
0.00 -1.5
0.0
151 - 250
1
0.36
0.0
17.74
0.0
-10.1
0.0 -1.45
0.00 -0.6
0.0
251 - 350
3
0.14
2.5
40.34
34.1
52.4
53.5 -0.32
.64 -2.2
1.4
MORE THAN 350
5
0.93
1.1
58.80
24.7
90.0
59.8 -1.53
.99 -2.5
1.1
~INERTIA WEIGHT









1800 - 2799
1
-0.14
0.0
17.21
0.0
10.5
0.0 -0.51
0.00 -1.5
0.0
2800 - 3799
3
-0.43
2.0
23.87
25.5
19.8
50.9 -0.49
.91 -1.1
0.5
3800 - 4799
6
1.12
1.1
60.19
22.4
89.6
53.5 -1.43
.91 -2.7
1.1
4800 - 5799
ALL VEHICLES 10 0.53 1.5 45.00 28.5 60.8 59.7 -1.06 .94 -2.1 1.2
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-12

-------
PERCENT'REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
( 1973-1974 VEHICLES—COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC
VEH. MEAN S.D.
CO	C02	NOX	MPG
MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS	1
CHRYSLER	8
FORD MOTOR CO.	0
GENERAL MOTORS	0
IMPORTS	1
37.3
7.9
0.0
27.6
63.6
47.2
-2.8 0.0 24.5
0.0 15.4 0.0 -182.0 0.0 -37.2 0.0
24.0 8.6 8.8 -48.6 62.7 -19.1 12.6
0.0 2.9 0.0 -45.9 0.0 -8.3 0.0
*MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
0
0
0
0
0
9
1
0
16.5 16.6 51.5 18.2 8.2 8.6 -66.4 72.1 -20.8 13.6
-50.6 0.0 2.3 0.0 13.7 0.0 -18.8 0.0 -11.0 0.0
*VEHICLE TYPE
AUTOMOBILE
TRUCK
*VEHICLE OWNER
6 5.1 30.5 35.5 23.6 5.0 7.7 -47.7 69.5 -13.1 12.1
4 16.8 20.7 63.2 8.2 14.4 5.9 -82.7 74.2 -29.9 7.1
GSA	6 19.0 18.6 56.6
PRIVATE OWNER 4 -4.0 32.9 31.7
^CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP	0
CNV/NO A.PMP 0
17.6
24.4
11.8
4.2
8.3 -93.1
6.6 -14.5
73.6 -26.7 13.0
23.6 -9.5 1.9
A.PMP/NO CNV
4
11.9
20.6
44.5
17.3
9.3
11.8
-69.9
78.4
-21.3
18.3
NO CNV/NO APMP
6
8.4
31.5
48.0
27.9
8.3
6.3
-56.2
70.3
-18.9
10.4
~DISPLACEMENT











LESS THAN 151
1
-2.8
0.0
24.5
0.0
2.9
0.0
-45.9
0.0
-8.3
0.0
151 - 250
1
9.4
0.0
23.0
0.0
-2.4
0.0
-46.0
0.0
-3.5
0.0
251 - 350
3
1.9
45.7
44.1
36.6
8.8
8.9
-16.3
21.4
-18.7
13.1
MORE THAN 350
5
17.1
19.1
57.2
11.4
12.1
7.8
-95.2
87.2
-26.0
12.5
*INERTIA WEIGHT











1800 - 2799
1
-2.8
0.0
24.5
0.0
2.9
0.0
-45.9
0.0
-8.3
0.0
2800 - 3799
3
-5.9
39.4
28.4
29.2
3.2
9.0
-19.5
26.2
-8.6
4.4
3800 - 4799
6
19.7
18.3
59.4
11.5
12.4
7.0
-85.4
81.6
-27.3
11.6
4800 - 5799
0










ALL VEHICLES
10
9.8
26.4
46.6
23.2
8.7
8.3
-61.7
69.6
1
to
•
00
CM
•
CO
•-4
AUTOMOTIVE TESTING LABORATORIES.INC,
19900 E. COLFAX, AURORA, COLO. 80011
J-13

-------
EXHAUST EMISSIONS BEFORE MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
2.25
0.0
68.40
0.0
417.9
0.0
2.01
0.00
16.7
0.0
CHRYSLER
2
2.99
-0.4
55.28
21.0
556.2
146.3
3.28
.36
13.8
2.4
FORD MOTOR CO.
1
1.00
0.0
11.83
0.0
702.0
0.0
0.85
0.00
12.3
0.0
GENERAL MOTORS
16
2.14
0.7
53.40
28.4
607.5
88.8
1.35
.41
13.0
2.0
IMPORTS
2
1.19
0.7
26.53
22.3
347.9
12.5
1.61
.28
22.6
1.4
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
22
2.09
0.8
49.92
27.7
574.9
119.8
1.56
.69
14. 1
3.4
*VEHICLE TYPE











AUTOMOBILE
18
2.02
0.7
51.56
28.8
580.7
128.1
1.46
.58
14.0
3.7
TRUCK
4
2.40
0.9
42. 52
24.2
549. 1
80.1
1.99
1.09
14.3
1.1
~VEHICLE OWNER











GSA
3
2.70
0.8
52.20
17.7
516. 1
55.8
2.05
1.33
14.7
0.9
PRIVATE OWNER
19
1.99
0.7
49.56
29.4
584. 2
125.4
1.48
.57
14.0
3.6
*CONTROL OPTIONS
; (CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.53
0.7
19.26
12.0
664.5
85.2
1.77
1.01
12.8
1.7
CNV/NO A.PMP
13
2.33
0.6
62.33
23.4
596.9
83.3
1. 28
.23
12.9
2.0
A.PMP/NO CNV
2
1.19
0.7
26.53
22. 3
347.9
12.5
1.61
.28
22.6
1.4
NO CNV/NO APMP
2
2.77
0.7
69. 27
1.2
435. 3
24.7
2. 77
1.08
16. 1
0.8
~DISPLACEMENT











LESS THAN 151
3
1.13
0.5
23.37
16.7
411.9
111.1
1.30
.57
20.3
4.2
151 - 250
4
2.76
0.7
53.51
14.7
484.6
77.8
1.84
1.16
15.5
1.9
251 - 350
13
2. 19
0.6
57.85
29.8
614. 2
74. 5
1.48
.58
12.6
1.5
MORE THAN 350
2
1.49
0.0
30.99
24.6
745. 1
39.2
1.88
.78
11.1
0.0
~INERTIA WEIGHT











1800 - 2799
1
1.00
0.0
17.04
0.0
539.8
0.0
0.68
0.00
15.6
0.0
2800 - 3799
5
1.71
0.9
38.14
26. 2
441. 1
149.0
1.46
.46
18.5
4.4
3800 - 4799
15
2.32
0.6
56.14
28. 1
612.4
75.9
1.66
.77
12.7
1.4
4800 - 5799
1
1.50
0.0
48.41
0.0
717.4
0.0
1.33
0.00
11.1
0.0
ALL VEHICLES
22
2.09
0.8
49.92
27.7
574.9
119.8
1.56
.69
14.1
3.4
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-14

-------
EXHAUST EMISSIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
if OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
^VEHICLE MANUFACTURER
AMER. MOTORS
1
1.36
0.0
10.52
0.0
457.3
0.0
3.82
0.00
18.6
0.0
CHRYSLER
2
2.90
0.9
38.87
9.3
537.3
89.0
3.33
.81
14.7
1.7
FORD MOTOR CO.
1
0.98
0.0
6.27
0.0
617.8
0.0
3.90
0.00
14.1
0.0
GENERAL MOTORS
16
1.41
0.7
24.55
15.3
599.6
99. 1
2.07
.67
14.2
2.5
IMPORTS
2
0.96
0.4
15.42
14.5
345.3
15. 1
1.98
.08
23.9
2.5
*MODEL YEAR











1968
0










1969
0










1970
0










1971
0










1972
0










1973
0










1974
0










1975
22
1.48
0.8
23.55
15.3
56-5.2
116.9
2.34
.86
15.3
3.7
^VEHICLE TYPE











AUTOMOBILE
18
1.38
0.7
23.88
15.6
-572.9
125. 3
2.13
. 71
15.2
4.1
TRUCK
4
1.93
1.1
22.06
15.8
530.5
69.0
3.27
.96
15.6
1.4
*VEHICLE OWNER











GSA
3
2.06
1.3
25.53
17.3
499.2
35.1
3.68
.59
16.3
0.8
PRIVATE OWNER
19
1.39
0.7
23.24
15.4
575.6
122.3
2.13
.69
15.1
4.0
*CONTROL OPTIONS
(CONVERTER,AIR
PUMP)







CNV/A.PMP
5
1.43
0.7
13.42
11.1
601.5
124.7
2.52
.87
14.7
3.4
CNV/NO A.PMP
13
1.44
0.8
28.02
14.8
600.3
84.3
2.09
.74
13.9
2.0
A.PMP/NO CNV
2
0.96
0.4
15.42
14.5
345.3
15.1
1.98
.08
23.9
2.5
NO CNV/NO APMP
2
2.44
1.5
27.98
24.7
465.8
12. 1
3.86
.06
17.2
1.9
^DISPLACEMENT











LESS-THAN 151
3
1.25
0.6
14.47
10.4
366.3
37.9
1.87
.21
22.8
2.7
151 - 250
4
2.33
1.2
31. 16
18.1
476.0
54.5
3.23
1.02
16.7
1.1
251 - 350
13
1.40
0.6
25.24
15.2
617.8
61.9
2.21
.81
13.6
1.7
MORE THAN 350
2
0.71
0. 3
10.99
9.5
699.9
80.0
2.06
.34
12.4
1.1
*INERTIA WEIGHT











1800 - 2799
1
1.82
0.0
12.58
0.0
408.2
0.0
1.64
0.00
20.5
0.0
2800 - 3799
5
1 .48
1.0
19. 14
18. 1
434.5
113.0
2.72
1.05
19.7
4.4
3800 - 4799
15
1.50
0.8
26. 15
15.2
614.0
77.4
2.29
.83
13.6
1.6
4800 - 5799
1
0.91
0.0
17.68
0.0
643.4
0.0
1.82
0.00
13.2
0.0
ALL VEHICLES
22
1.48
0.8
23.55
15.3
565.2
116.9
2.34
.86
15.3
3.7
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-15

-------
EXHAUST EMISSION REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
1975 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF HC	CO	CO2	NOX	MPG
VEH. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
0.89
0.0
57.88
0.0
-39.4
0.0 -1.81
0.00 -1.
9
0.0
CHRYSLER
2
0-09
0.4
16.41
11.7
19.0
57.3 -0.05
.45 -0.
9
0.6
FORD MOTOR CO.
1
0.02
0.0
5.56
0.0
84. 2
0.0 -3.05
0.00 -1.
8
0.0
GENERAL MOTORS
16
0.73
0.7
28.85
23.2
7.9
56.2 -0.72
.68 -1.
2
1.4
IMPORTS
2
0.22
0.4
11.11
7.8
2.6
27.6 -0.37
.35 -1.
3
1.1
*MODEL YEAR










1968
0









1969
0









1970
0









1971
0









1972
0









1973
0









1974
0









1975
22
0.60
0.7
26.37
22. 3
9.7
53.3 -0.78
.85 -1.
2
1.3
*VEHICLE TYPE










AUTOMOBILE
18
0.63
0.7
27.68
23.9
7.8
56.4 -0.67
.76 -1.
2
1.3
TRUCK
4
0. 46
0.7
20.46
13.7
18.5
41.4 -1.27
1.17 -1.
3
1.5
*VEHICLE OWNER










GSA
3
0.64
0.8
26.67
7.0
16.9
50.5 -1.63
1.13 -1.
6
1.7
PRIVATE OWNER
19
0.60
0.7
26.32
24.0
8.6
55.0 -0.65
.74 -1.
2
1.2
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)






CNV/A.PMP
5
0.11
0.7
5.84
3.0
63.0
47.2 -0.76
1.37 -1.
8
1.8
CNV/NO A.PMP
13
0.89
0.6 ¦
34. 31
22. 3
-3.4
50.0 -0.81
.70 -1.
0
1.1
A.PMP/NO CNV
2
0.22
0.4
11.11
7.8
2.6
27.6 -0.37
.35 -1.
3
1.1
NO CNV/NO APMP
2
0.34
0.8
41.29
23.5
-30.5
12.6 -1.08
1.03 -1.
2
1.0
^DISPLACEMENT










LESS THAN 151
3
-0.12
0.7
8.90
6.7
45.6
77.0 -0.57
.42 -2.
5
2.2
151 - 250
4
0.43
0.8
22.34
10.4
8.5
44.5 -1.39
1.04 -1.
2
1.6
251 - 350
13
0.80
0.6
32.62
26.2
-3.6
51.2 -0.74
.86 -1.
0
0.9
MORE THAN 350
2
0.78
0.3
19.99
15.2
45. 2
40.7 -0.18
.45 -1.
3
1.1
*INERTIA WEIGHT










1800 - 2799
1
-0.82
0.0
4.46
0.0
131.6
0.0 -0.96
0.00 -4.
9
0.0
2800 - 3799
5
0.23
0.4
19.01
22.2
6.7
48.7 -1.25-
1.18 -1.
3
1.0
3800 - A 799
15
0.82
0.6
29.99
23. 2
-1.6
45.7 -0.63
.75 -0.
9
1.0
4800 - 5799
1
0.59
0.0
30.73
0.0
74.0
0.0 -0.49
0.00 -2.
1
0.0
ALL VEHICLES
22
0.60
0.7
26.37
22.3
9. 7
53.3 -0.78
.85 -1.
2
1.3
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-16

-------
PERCENT REDUCTIONS AFTER MAINTENANCE AND/OR INSTALLATION
19 75 FEDERAL TEST PROCEDURE
(1975 VEHICLES-COLD START DATA)
(BASELINE-INSTALLATION OF DEVICE)
# OF -HC
VEH. MEAN S.D.
CO
MEAN S.D.
CO 2
MEAN S.D.
NOX	MPG
MEAN S.D. MEAN S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
1
39.
.6
0.
.0
84.
. 6
0.0
-9.
,4
0.
.0
-90.
,0
0.
,0
-11.
.3
0.
,0
CHRYSLER
2
4.
,3
15.
,5
27.
.6
10.7
2.
, 1
9.
,8
-0.
.6
13.
.5
-7.
.1
5.
,8
FORD MOTOR CO.
1
2.
.0
0.
.0
47.
.0
0.0
12.
,0
0.
.0
-358.
,8
0.
,0
-14.
.8
0.
,0
GENERAL MOTORS
16
30.
,6
38.
.2
50.
.8
22.5
1.
.2
9.
.8
-62.
,4
58.
,8
-9.
.3
10.
, 1
IMPORTS
2
11.
,3
24.
.5
45.
.7
9.1
0.
, 6
7.
.9
-2 5.
. 1
26.
, 2
-5.
.8
4.
,4
*MODEL YEAR
1968	0
1969	0
1970	0
1971	0
1972	0
1973	0
1974	0
1975	22
^VEHICLE TYPE
AUTOMOBILE	18
TRUCK	4
*VEHICLE OWNER
25.6 34.7 49.6 21.9
26.8
20. 1
36.4
29.1
50.9
43.8
21.8
24.3
1.2 9.3 -68.1 84.8 -9.1 8.9
0.8
2.9
9.8 -62.2
7.7 -94.8
83.3 -9.0 8.8
99.3 -9.7 10.7
GSA 3
27.9 30.0
53.9
16.6
2.7
9.4
-122.9
100.2
PRIVATE OWNER 19
25.2 36.1
48.9
22.9
1.0
9.5
-59.5
81.8
*CONTROL OPTIONS(CONVERTER,AIR
PUMP)





CNV/A.PMP 5
-0.5 53.1
35.0
22.4
10.2
8.9
-99. 1
157.9
CNV/NO A.PMP 13
39.2 22.2
54. 2
20. 7
-0.9
8. 3
-65.6
56.4
A.PMP/NO CNV 2
11.3 24.5
45.7
9. 1
0.6
7.9
-25.1
26.2
NO CNV/NO APMP 2
16.4 32.7
59.9
34.9
-7. 1
3.3
-50.1
56.5
~DISPLACEMENT
LESS THAN
151
3
-19.8
56.6
39. 2
13.0
8.5
14.8
-63.8
69.5
-14.3
151 - 250

4
19.2
30.0
44.5
23. 2
1.0
8.4
-105.9
88.6
-8.5
251 - 350

13
33.8
24.3
51.1
24. 3
-1.2
8.4
-65.6
93.8
-7.8
MORE THAN
350
2
52.6
18.7
65.8
3.4
6.2
5.8
-15.6
30.1
-11.4
8.6
9.1
4.4
5.9
11.7
*INERTIA WEIGHT
1800 - 2799
1
-82
.0
0.
.0
26.
2
0.0
24.
.4
0.0
-141.
2
0.
0
-31.
3
0.
.0
2800 - 3799
5
11
.5
21.
,3
47.
9
24.7
-0.
, 1
8.9
-110.
8
141.
,8
-7.
4
6.
.3
3800 - 4799
15
36
.5
25.
.2
50.
8
22.1
-0.
.5
7.7
-51.
1
60.
3
-7.
6
7.
.9
4800 - 5799
1
39
.3
0.
.0
63.
. 5
0.0
10.
,3
0.0
-36.
8
0.
.0
-18.
4
0.
.0
ALL VEHICLES
22
25
.6
34.
.7
49.
, 6
21.9
1.
,2
9.3
1
a*
CO
1
84,
,8
-9.
1
8,
.9
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-17

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
HYDROCARBONS (HC)
COLD START DATA
#OF
VEH
BASELINE
MEAN S.D.
AFTER INST.
MEAN S.D.
REDUCTION
MEAN +C.I. S.D.
PERCENT REDUCTION
MEAN iC.I. S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
3
6.62
4.62
5.18
4.63
1.44
1.02
0.75
28.9
22.5
16.5
CHRYSLER
12
4.78
1.49
4.35
1.95
0.44
0.84
1.64
8.3
14.3
27.8
FORD MOTOR CO.
4
5.97
4.33
4.55
2.77
1.42
3.12
2.93
12.1
30.2
28.3
GENERAL MOTORS
21
3.52
3.19
2.64
2.55
0.88
0.63
1.67
25.5
13.6
36.3
IMPORTS
3
2.47
2.28
2.37
2.44
0.10
0.46
0.34
6.6
26.0
19.1
~MODEL YEAR
1968
1
6.84
0.00
6.15
0.00
0.69
0.00
0.00
10.1
0.0
0.0
1969
3
9.72
4.35
7.73
0.29
1.99
6.28
4.62
9.7
50.1
36.9
1970
4
9.30
2.17
7.81
2.57
1.50
3.33
3.12
13.2
32.7
30.7
1971
2
5.38
1.92
3.87
0.83
1.51
5.68
2.75
20.3
90.5
43.8
1972
1
3.22
0.00
3.34
0.00
-0.12
0.00
0.00
-3.7
0.0
0.0
1973
9
4.89
1.26
4.00
1.00
0.89
0.61
1.00
16.5
10.1
16.6
1974
1
5.39
0.00
8.12
0.00
-2.73
0.00
0.00
-50.6
0.0
0.0
1975
22
2.09
0.76
1.48
0.81
0.60
0.24
0.67
25.6
12.7
34.7
~VEHICLE TYPE
AUT (MOBILE 35
TRUCK	8
~VEHICLE OWNER
GSA	10
4.31 3.28 3.50 2.83 0.80 0.52 1.81 18.3 9.5 33.4
3.97 1.84 3.22 1.60 0.75 0.63 0.96 18.4 15.4 23.4
4.42 1.50 3.60 1.33 0.82 0.59 1.04 18.7 13.0 22.7
PRIVATE OWNER 33
4.19
3.40
3.41
2.93
0.78
0.54
1.84
18.3
10.0
34.1
~CONTROL OPTIONSCCONVERTER,AIR PUMP)







CNV/A.PMP 5
CNV/NO A.PMP 13
A.PMP/NO CNV 10
NO CNV/NO APMP 15
1.53
2.33
5.23
6.15
0.69
0.60
4.06
2.51
1.43
1.44
4.33
5.28
0.69
0.76
2.84
2.36
0.11
0.89
0.90
0.87
0.60
0.29
1.40
0.91
0.66
0.58
2.44
2.00
-0.5
39.2
10.5
11.8
47.9
10.9
13.0
12.8
53.1
22.2
22.6
28.4
~DISPLACEMENT










LESS THAN 151 5
151 - 250 6
251 - 350 22
MORE THAN 350 10
2.33
3.80
4.69
4.48
1.80
2.14
3.73
2.07
2.45
3.73
3.58
3.49
1.81
3.07
3.04
1.84
-0.13
0.06
1.11
0.99
0.42
0.83
0.75
0.70
0.47
1.04
2.05
1.23
-13.2
10.8
24.9
24.1
37.0
22.5
10.9
14.6
41.0
28.4
29.7
25.4
~INERTIA WEIGHT










1800 - 2799 3
2800 - 3799 13
3800 - 4799 26
4800 - 5799 1
3.08
5.71
3.75
1.50
2.02
4.42
2.03
0.00
3.44
4.70
2.93
0.91
1.68
3.37
2.14
0.00
-0.36
1.01
0.83
0.59
0.54
1.32
0.34
0.00
0.40
2.69
1.03
0.00
-29.5
10.9
26.8
39.3
61.8
14.2
8.9
0.0
45.5
29.0
26.6
0.0
~POPULATION SUMMARY










1968-1972 11
1973-1974 10
1975 22
ALL VEHICLES 43
7.93
4.94
2.09
4.24
3.30
1.19
0.76
3.05
6.51
4.41
1.48
3.45
2.37
1.61
0.81
2.63
1.41
0.53
0.60
0.79
1.56
0.85
0.24
0.43
2.89
1.48
0.67
1.68
11.7
9.8
25.6
18.4
15.2
15.1
12.7
8.1
28.1
26.4
34.7
31.5
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-18

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
, 90% CONFIDENCE INTERVALS (C.I.)
CARBON MONOXIDE (CO)
COLD START DATA
#OF BASELINE AFTER INST.	REDUCTION PERCENT REDUCTION
VEH MEAN S.D. MEAN S.D. MEAN +C.I. S.D. MEAN +C.I. S.D.
~VEHICLE MANUFACTURER
AMER. MOTORS
3
121.77
46.50
57.13
49.
,30
64.64
32.53
23.95
59.
1
38.
,0
28.0
CHRYSLER
12
89.00
25.24
45.47
22.
.98
43.52
16.43
31.94
45.
,7
13.
.0
25.3
FORD MOTOR CO.
4
64.98
39.71
34.17
29.
.41
30.81
33.98
31.88
45.
,9
26.
.7
25.0
GENERAL MOTORS
21
67.34
40.67
30.21
18.
.00
37.13
11.24
29.92
51.
,2
7,
.9
21.1
IMPORTS
3
41.06
29.70
27.91
23.
.96
13.15
8.88
6.53
38.
,7
18.
.8
13.8
~MODEL YEAR
1968
1
161.97
0.00
52.02
1969
3
121.49
28.05
77.30
1970
4
111.70
28.01
52.26
1971
2
93.53
51.06
25.53
1972
1
51.96
0.00
39.77
1973
9
92.31
24.54
42.54
1974
1
89.26
0.00
87.24
1975
22
49.92
27.75
23.55
*VEHICLE TYPE




AUTCMOBILE
35
76.44
40.67
38.32
TRUCK
8
69.40
34.54
28.85
*VEHICLE OWNER




GSA
10
81.98
32.18
36.74
PRIVATE OWNER
33
73.05
41.45
36.50
*CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP
5
19.26
11.97
13.42
CNV/NO A.MP
13
62.33
23.36
28.02
A.PMP/NO CNV
10
84.06
43.41
42.23
NO CNV/NO APMP
15
98.88
31.43
47.89
~DISPLACEMENT




LESS THAN 151
5
38.43
24.62
27.22
151 - 250
6
65.40
22.93
38.91
251 - 350
22
78.80
37.82
39.55
MORE THAN 350
10
91.22
46.70
33.23
~INERTIA WEIGHT



1800 - 2799
3
46.37
26.97
35.08
2800 - 3799
13
80.02
43.66
42.72
3800 - 4799
26
77.03
38.46
34.37
4800 - 5799
1
48.41
0.00
17.68
~POPULATION SUMMARY


1968-1972
11
110.21
36.81
53.07
1973-1974
10
92.00
23.16
47.01
1975
22
49.92
27.75
23.55
ALL VEHICLES
43
75.13
39.31
36.56
15.76	68.00	138.0 66.82	62.5	77.0	37.3
0.00	12.19	0.00 0.00	23.5	0.0	0.0
11.68	49.77	15.65 25.61	51.5	11.1	18.2
0.00	2.02	0.00 0.00	2.3	0.0	0.0
15.26	26.37	8.17 22.33	49.6	8.0	21.9
25.53 38.12 8.99 31.47 47.8 6.5 22.8
14.46 40.56 16.20 24.64 53.5 13.0 19.7
15.23 45.24 14.81 25.84 53.7 9.5 16.5
26.29 36.55 9.23 31.31 47.4 7.0 23.6
11.12	5.84 2.66	2.95	35.0 20.2	22.4
14.81	34.31 10.97	22.34	54.2	10.2	20.7
18.25	41.83 17.32	30.23	46.5	8.6	15.0
29.53	51.00 15.16 33.49	50.5	12.1	26.8
19.50	11.22 - 5.39	5.98	33.1	11.2	12.4
18.73	26.49 11.81	14.89	42.1	16.2	20.4
28.94	39.25 9.91	27.06	48.8	9.1	24.8
16.89	57.99 21.72 37.91	61.1	8.7	15.2
20.56	11.29 8.73	6.42	24.7	1.9	1.4
31.88	37.30 14.12 28.75	46.6	11.9	24.2
20.18	42.66 10.62	31.75	52.3	7.1	21.2
0.00	30.73 0.00 0.00	63.5	0.0	0.0
29.34	57.13 19.31	35.65	49.6	13.0	24.0
17.92	45.00 16.32	28.48	46.6	13.3	23.2
15.26	26.37 8.17	22.33	49.6	8.0	21.9
24.01	38.57 7.72	30.06	48.9	5.7	22.2
AUTOMOTIVE TESTING LABORATORIES,INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-19

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
CARBON DIOXIDE (C02)
COLD START DATA
#OF BASELINE AFTER INST.	REDUCTION PERCENT REDUCTION
VEH MEAN S.D. MEAN S.D. MEAN +c.I. S.D. MEAN ±C.I. S.D.
*VEHICLE MANUFACTURER
AMER. MOTORS
3
571,
.67
151.65
550.63
81.77
21.03
108.3
79.
.73
1.5
17,
.3
12.7
CHRYSLER
12
611,
,51
111.64
566.15
78.63
45.36
29.43
57.
.20
6.4
4.
.2
8.2
FORD MOTOR CO.
4
616,
.27
108.51
590.95
105.15
25.33
57.29
53.
.74
3.8
9.
,5
8.9
GENERAL MOTORS
21
563,
.95
113.87
567.18
114.88
-3.24
22.57
60,
.10
-1.1
4.
,2
11.3
IMPORTS
3
350,
.83
10.17
345.60
10.72
5.23
27.21
20,
.03
1.4
7.
,8
5.8
*MODEL YEAR
1968	1	492.40 0.00	623.30 0.00	-130.90 0.00	0.00	-26.6	0.0	0.0
1969	3	486.07 65.06	520.57 30.55	-34.50 65.68	48.35	-8.1	15.6	11.5
1970	4	478.95 99.57	464.10 100.75	14.85 29.10	27.30	3.1	5.4	5.1
1971	2	640.60 109.60	638.40 116.25	2.20 13.72	6.65	0.4	2.3	1.1
1972	1	405.20 0.00	400.10 0.00	5.10 0.00	0.00	1.3	0.0	0.0
1973	9	626.45 147.38	567.68 112.32	58.78 38.46	62.95	8.2	5.2	8.6
1974	1	574.40 0.00	495.90 0.00	78.50 0.00	0.00	13.7	0.0	0.0
1975	22	574.92 119.80	565.18 116.90	9.75 19.51	53.30	1.2	3.4	9.3
*VEHICLE TYPE
AUTOMOBILE 35	552.76 123.66	547.99 118.21	4.77 15.65	54.78	0.2	2.8	9.9
TRUCK 8	633.37 113.17	572.17 76.47	61.20 40.47	61.54	8.7	5.8	8.8
~VEHICLE OWNER
GSA 10	628.02 128.57	571.51 95.03	56.51 36.50	63.70	7.8	5.3	9.2
PRIVATE OWNER 33	549.50 119.35	546.73 116.44	2.77 15.68	53.21	-0.0	2.9	9.9
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
CNV/A.PMP 5	664.46 85.15	601.46 124.69	63.00 42.54	47.21	10.2	8.0	8.9
CNV/NO A.PMP 13	596.88 83.28	600.33 84.32	-3.45 24.58	50.04	-0.9	4.1	8.3
A.PMP/NO CNV 10	491.13 164.90	468.30 119.12	22.83 40.8171.23	2.3	6.6	11.5
NO CNV/NO APMP 15	561.37 112.69	550.84 97.09	10.53 26.45	58.43	1.0	4.8	10.6
~DISPLACEMENT
LESS THAN 151 5	399.50 82.20	369.02 33.08	30.48 52.51	58.27	6.0	10.0	11.1
151 - 250 6	450.80 83.49	445.77 69.69	5.03 27.99	35.29	0.6	5.3	6.7
251 - 350 22	581.82 79.74	579.09 73.31	2.73 19.04	52.00	-0.1	3.4	9.3
MORE THAN 350 10	691.12 92.08	649.74 59.19	41.38 47.02	82.06	4.7	7.6	13.2
*INERTIA WEIGHT
1800 - 2799 3	433.90 94.86	384.83 33.70	49.07 97.17	71.53	9.5	17.5	12.9
2800 - 3799 13	470.95 113.63	465.63 94.87	5.32 22.71	46.23	0.1	4.5	9.3
3800 - 4799 26	625.85 87.91	611.77 71.43	14.08 21.70 64.87	1.4	3.5	10.4
4800 - 5799 1	717.40 0.00	643.40 0.00	74.00 0.00 0.00 10.3	0.0	0.0
~POPULATION SUMMARY
1968-1972
11
504.80
100.45
519,
.84
105.56
-15.
.05
27.
.66
51.08
-3.
,3
5.8
10.
8
1973-1974
10
621.25
139.93
560.
.50
108.30
60.
.75
34.
.19
59.68
8,
.7
4.7
8.
3
1975
22
574.92
119.80
565,
.18
116.90
9,
.75
19,
.51
53.30
1,
.2
3.4
9.
3
ALL VEHICLES
43
567.76
124.58
552,
.49
111.26
15,
.27
15.
.31
59.62
1.
.8
2.6
10.
2
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-20

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STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
OXIDES OF NITROGEN (NOx)
COLD START DATA
wOF BASELINE AFTER INST.	REDUCTION PERCENT REDUCTION
VEH MEAN' S.D. MEAN S.D. MEAN +C.I. S.D. MEAN +C.I. S.D.
~VEHICLE MANUFACTURER









AMER. MOTORS
3
1.51
0.51
2.83
0.99
-1.32
1.17
0.86
-97.7
109.8
80.8
CHRYSLER
12
2.99
1.02
3.61
1.13
-0.62
0.57
1.12
-30.3
30.6
59.4
FORD MOTOR CO.
4
3.18
1.58
3.51
0.44
-0.33
1.97
1.85
-78.9
199.1
186.8
GENERAL MOTORS
21
1.58
0.59
2.18
0.78
-0.59
0.30
0.79
-49.5
22.6
60.1
IMPORTS
3
1.45
0.35
1.86
0.22
-0.42
0.36
0.26
-32.1
30.0
22.1
*MODEL YEAR











1968
1
2.34
0.00
3.66
0.00
-1.32
0.00
0.00
-56.4
0.0
0.0
1969
3
2.88
1.24
3.26
0.43
-0.38
1.17
0.86
-22.3
46.4
34.2
1970
4
2.51
1.07
1.90
0.79
0.61
0.67
0.62
20.9
31.5
29.6
1971
2
3.27
0.52
2.46
1.48
0.82
2.00
0.97
27.6
70.0
33.9
1972
1
2.73
0.00
2.98
0.00
-0.25
0.00
0.00
-9.2
0.0
0.0
1973
9
2.69
1.43
3.83
1.15
-1.13
0.59
0.96
-66.4
44.0
72.1
1974
1
2.02
0.00
2.40
0.00
-0.38
0.00
0.00
-18.8
0.0
0.0
1975
22
1.56
0.69
2.34
0.86
-0.78
0.31
0.85
-68.1
31.0
84.8
*VEHICLE TYPE
AUTOMOBILE 35
TRUCK	8
*VEHICLE OWNER
2.08
2.27
1.11
0.94
2.49
3.75
0.99
0.90
-0.42
-1.48
0.25 0.88
0.62 0.94
-40.0
-88.7
21.0
53.5
73.5
81.4
GSA
10
2.41 1.06 3.89 0.68 -1.48 0.51 0.89 -92.4 46.5 81.1
PRIVATE OWNER 33
2.02
1.08
2.37
0.93
-0.35
0.25
0.85
-35.9
21.0
71.1
~CONTROL OPTIONS(CONVERTER,AIR PUMP)







CNV/A.PMP 5
CNV/NO A.PMP 13
A.PMP/NO CNV 10
NO CNV/NO APMP 15
1.77
1.28
2.29
2.83
1.01
0.23
0.77
1.22
2.52
2.09
2.81
3.29
0.87
0.74
1.16
1.12
-0.76
-0.81
-0.52
-0.46
1.23
0-34
0.55
0.50
1.37
0.70
0.96
1.11
-99.1
-65.6
-31.6
-29.7
142.3
27.7
36.4
26.1
157.9
56.4
63.5
57.6
~DISPLACEMENT










LESS THAN 151 5
151 - 250 6
251 - 350 22
MORE THAN 350 10
1.55
2.06
2.10
2.45
0.78
1.04
1.20
0.92
2.04
3.08
2.56
3.22
0.55
1.41
0.99
1.14
-0.49
-1.02
-0.46
-0.77
0.30
0.99
0.32
0.71
0.33
1.24
0.87
1.24
-49.3
-70.2
-42.4
-50.8
49.2
73.9
28.7
45.6
54.6
93.1
78.5
. 79.7
~INERTIA WEIGHT










1800 - 2799 3
2800 - 3799 13
3800 - 4799 26
4800 - 5799 1
1.51
2.32
2.11
1.33
1.08
1.28
0.99
0.00
2.08
2.82
2.79
1.82
0.78
1.26
1.04
0.00
-0.57
-0.50
-0.68
-0.49
0.49
0.58
0.32
0.00
0.36
1.17
0.96
0.00
-65.4
-44.9
-49.7
-36.8
92.6
50.2
22.1
0.0
68.1
102.3
66.2
0.0
~POPULATION SUMMARY










1968-1972 11
1973-1974 10
1975 22
ALL VEHICLES 43
2.76
2.63
1.56
2.11
0.88
1.36
0.69
1.08
2.63
3.68
2.34
2.73
0.95
1.17
0.86
1.08
0.12
-1.06
-0.78
-0.61
0.50
0.54
0.31
0.25
0.92
0.94
0.85
0.98
0.6
-61.7
-68.1
-49.0
20.4
39.9
31.0
19.6
37.6
69.6
84.8
76.4
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-21

-------
STATISTICAL SUMMARY OF EXHAUST EMISSIONS
90% CONFIDENCE INTERVALS (C.I.)
MILES PER GALLON (MPG)
COLD START DATA
#OF
VEH
BASELINE
MEAN S.D.
AFTER INST.
MEAN S.D.
REDUCTION
MEAN +C.I. S.D.
PERCENT REDUCTION
MEAN iC.I. S.D.
~VEHICLE MANUFACTURER
AMER. MDTORS
3
12.09
4.02
14.14
3.89
-2,
.05
1.76
1,
.29
-18.
.9
21.6
15.9
CHRYSLER
12
11.87
2.05
13.77
1.52
-1,
.90
0.64
1,
.24
-17.
,5
6.4
12.5
FORD MOTOR CO.
4
12.09
0.89
13.79
2.52
-1,
.70
2.27
2,
.13
-13.
,8
18.1
17.0
GENERAL MOTORS
21
13.35
2.19
14.68
2.75
-1,
.34
0.51
1.
.36
-10.
,0
3.5
9.4
IMPORTS
3
21.20
2.65
22.60
2.93
-1.
.40
1.04
0,
.77
-6.
,6
4.7
3.4
~MODEL YEAR
1968
1969
1970
1971
1972
1973
1974
1975
~VEHICLE TYPE
AUTCMOBILE
TRUCK
~VEHICLE OWNER
GSA
PRIVATE OWNER
~CONTROL OPTIONS(CONVERTER,AIR PUMP)
1
11.55
0.00
12.25
0.00
-0.70
0.00
0.00
-6.1
0.0
0.0
3
12.55
0.47
13.34
0.74
-0.79
1.02
0.75
-6.4
8.1
6.0
4
13.37
2.68
16.24
3.61
-2.87
1.67
1.57
-21.2
13.0
12.1
2
11.03
0.32
13.13
2.73
-2.09
4.98
2.41
-18.7
44.0
21.3
1
17.85
0.00
18.76
0.00
-0.91
0.00
0.00
-5.1
0.0
0.0
9
11.89
3.20
14.08
2.66
-2.19
0.74
1.21
-20.8
8.3
13.6
1
12.13
0.00
13.47
0.00
-1.34
0.00
0.00
-11.0
0.0
0.0
22
14.05
3.39
15.29
3.69
-1.24
0.46
1.25
-9.1
3.3
8.9
35
13.53
3.25
14.97
3.50
-1.45
0.37
1.31
-11.2
3.0
10.5
8
12.18
2.43
14.36
1.89
-2.18
0.92
1.40
-19.8
9.0
13.7
10
12.02
2.69
14.15
2.16
-2.13
0.82
1.43
-19.8
8.3
14.5
33
13.66
3.20
15.07
3.52
-1.42
0.38
1.29
-10.7
2.9
9.7
CNV/A.FMP 5	12.85	1.69	14.66	3.38	-1.81	1.63	1.80	-13.1	10.0	11.1
CNV/NO A.PMP 13	12.89 1.99	13.90	1.95	-1.02 0.56	1.14	-8.4	4.5	9.1
A.PMP/NO CNV 10	15.24 4.88	17.16	4.50	-1.92	0.69	1.21	-15.2	7.4	13.0
NO CNV/NO APMP 15	12.45	2.50	14.22	2.66	-1.77	0.63	1.40	-15.0	5.6	12.5
~DISPLACEMENT
151 -
251 -
250
350
151
5
19.41
3.19
21.41
2.71
-2.00
1.54
1.71
-11.3
10.4
11.5

6
15.82
1.55
17.22
1.55
-1.40
1.20
1.51
-9.3
8.2
10.3
350
22
12.44
1.30
13.79
1.76
-1.35
0.45
1.24
-11.0
3.7
10.2
10
10.53
0.89
12.52
1.06
-1.99
0.76
1.32
-19.6
7.9
13.7
~INERTIA WEIGHT
1800 - 2799
3
17.27
1.49
19.71
0.87
-2.44
2.90
2.14
-14.9
19.4
14.3
2800 - 3799
13
15.28
4.01
17.00
3.99
-1.72
0.62
1.26
-12.2
4.7
9.6
3800 - 4799
26
11.90
1.57
13.29
1.48
-1.40
0.44
1.32
-12.7
4.2
12.6
4800 - 5799
1
11.12
0.00
13.17
0.00
-2.05
0.00
0.00
-18.4
0.0
0.0
~POPULATION
SUMMARY










1968-1972
11
12.97
2.38
14.75
3.00
-1.79
0.84
1.55
-13.9
6.7
12.4
1973-1974
10
11.91
3.02
14.02
2.51
-2.11
0.67
1.17
-19.8
7.5
13.2
1975
22
14.05
3.39
15.29
3.69
-1.24
0.46
1.25
-9.1
3.3
8.9
ALL VEHICLES
43
13.28
3.14
14.86
3.25
-1.58
0.34
1.34
-12.8
3.0
11.5
AUTOMOTIVE TESTING LABORATORIES.INC.
19900 E. COLFAX, AURORA, COLO. 80011
J-22

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