![[logo] US EPA](https://webarchive.library.unt.edu/eot2008/20081026032559im_/http://www.epa.gov/epafiles/images/logo_epaseal.gif){kind=logo}
Gas Saving and Emission Reduction Devices Evaluation
Gas Saving and Aftermarket Retrofit Device Evaluation Program
NOTE: You will need Adobe Acrobat Reader, available as a free download, to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
Program Information and Fact Sheets
- Device Fact Sheet (PDF) (2 pp, 11K, September 2001)
- EPA Motor Vehicle Aftermarket Retrofit Device Evaluation Program (PDF) (14 pp, 40K, EPA420-B-00-003, May 2000)
- List of Independent Test Labs (PDF) (1 pp, 34K, August 2008)
Shown below are downloadable test reports for specific products that EPA tested under the Aftermarket Retrofit Device Evaluation Program, also known as the "511 Program." EPA evaluates aftermarket retrofit devices which are claimed to improve fuel economy and/or reduce exhaust emissions. The purpose of the program is to generate, analyze, and disseminate technical data; EPA does not approve or certify retrofit devices for light duty vehicles.
Contact: Jim Snyder (snyder.jim@epa.gov), telephone: 734-214-4946