EPA  Evaluation Program for Aftermarket
                    Products That Are Intended to Improve
                    Fuel  Economy or Reduce Emissions
                       The U.S. Environmental Protection Agency (EPA) conducts a volun-
                       tary program to evaluate aftermarket retrofit devices or fuel additives
                   that are intended to improve vehicle fuel economy and/or reduce exhaust
                   emissions. Through engineering, scientific, and statistical analysis of data
                   obtained from independent and EPA laboratory testing, EPA objectively
                   determines the effects a device or fuel additive may have on fuel economy
                   and exhaust emissions. The Agency does not approve, certify, or endorse
                   these products.

                   Background
                   The purpose of the program is to generate, analyze, and disseminate resulting tech-
                   nical data to the public. A manufacturer's participation in the program is voluntary
                   unless ordered by the EPA Administrator or the Federal Trade Commission,

                   "Retrofit device" means any component that is designed to be installed in or on an
                   automobile (as an addition to, a replacement for, or through alteration or modifica-
                   tion of any original component, equipment, or other device) that the manufacturer
                   states will provide higher fuel economy and/or lower emissions. The term also includes
                   fuel additives for use in an automobile. Devices and fuel additives meant to be used
                   by four-wheel highway vehicles with gross vehicle weight of 6,000 pounds or less can
                   be tested in the program. Flow-measuring instruments or other driving aids, oil addi-
                   tives, lubricants, and lubricant additives do not qualify to be tested in this program,

                   EPA does not approve, certify, or endorse any product tested in this program, any
                   independent  laboratory, or the results of any independent laboratory testing. Any
                   claims of EPA certification in this program are false.
SEPA
United States
Environmental Protection
Agency
Office of Transportation and Air Quality
                  EPA-420-F-11-013
                       June 2011

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             Requirements for Evaluation
             To enter this program, manufacturers should first submit an application for evaluation to EPA
             using the format set forth in the program description document on our web site at: www.epa.gov/
             otaq/consumer/b00003.pdf. A plan for the device to be tested at an independent test lab should
             be developed by the applicant in consultation with EPA. If the results of these tests demonstrate
             a statistically significant improvement in fuel economy and/or emissions reduction, then EPA
             may choose to allow the device to be tested at its lab. The applicant submitting the product
             must pay for all testing costs for both the independent lab and EPA tests.

             Manufacturers of fuel additives are required to register their product with EPA prior to its intro-
             duction into commerce or evaluation in this program. Many of the fuel line devices and liquids
             sold and associated with vapor bleed devices may be considered additives for the purpose of
             registration. Registration involves providing a chemical description of the product and certain
             technical, marketing, and health-effects information. This allows EPA to identify the likely
             combustion and evaporative emissions. In certain cases, health-effects testing is required for a
             product to maintain its registration or before  a new product can be registered. EPA uses this
             information to identify products whose emissions may pose an unreasonable risk to public
             health, warranting further investigation and/or regulation. Information on the registration of
             fuels and fuel additives is available on our website at: www.epa.gov/otaq/additive.htm.
             Testing
             EPA's evaluation program uses the same scientific laboratory test methods that are used to certify
             vehicles in the United States: the Federal Test Procedure (FTP) and the Highway Fuel Economy
             Test (HFET). Both tests involve placing the test vehicle on a dynamometer (a laboratory test
             machine that simulates road conditions) and driving through a specified trace simulating city
             and highway driving. Exhaust gases are captured and analyzed to determine the rate of each
             pollutant emission in grams per mile (g/mi) and to calculate fuel economy in miles per gallon
             (mpg).

             The controlled laboratory conditions and  use of a standard test fuel in this evaluation program
             minimizes variables one would have to address when using actual outdoor driving on roadways,
^^>\        Laboratory testing assures that the test results' comparisons, with and without the device, are
I    .        not influenced by outside, uncontrollable factors, such as individual driving habits, wind, weather,
             and traffic,

             EPA conducts tests on at least two different vehicles which are representative of the typical
             vehicle for which the device or additive is intended. The tests are done in three stages. First,
             the baseline is established by testing each  vehicle without the device at least three times. Next,
             the device or additive is installed on the vehicles and the same tests are repeated. For the third
             stage, if and when EPA deems it necessary, the device is removed from the vehicles and the tests
             are done again to determine whether the device affected the vehicles' original performance.
             Applicants are invited to be present during installation and testing of the device at EPA's test
             laboratory located in Ann Arbor, Michigan,
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             Test Results
             EPA analyzes the data obtained from testing for statistically significant differences, either posi-
             tive or negative. Emission results for each of the criteria pollutants (carbon monoxide, hydro-
             carbons and nitrogen oxides) are analyzed. EPA publishes a report of its findings in the Federal
             Register, and posts it on our website.

             If EPA finds that the device or additive caused a statistically significant increase in any of the
             criteria pollutants, EPA will consider installation of the device/additive as tampering with the
             emission control system even in the case where fuel economy is improved by the product. Tam-
             pering with a vehicle's emission control system is illegal.
             For More Information

             A complete description of the Aftermarket Retrofit Device Evaluation Program is available on
             EPA's Office of Transportation and Air Quality website at:

                       www.epa.gov/otaq/consumer/reports.htm

             A list of independent testing laboratories and an application for testing at EPA's National Vehicle
             Fuel Emissions Laboratory are also available on the website.

             You can also contact the OTAQ library for document information at:

                       U.S. Environmental Protection Agency
                       Office of Transportation and Air Quality Library
                       2000 Traverwood Drive
                       Ann Arbor, MI 48105
                       734-214-4311& 214-4434
                       E-mail: Group_AALibrary@epa.gov

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