E85 and canned tunes
Consumers should never use E85 in a conventional, gasoline-only vehicle. This can lead to a range of problems, including not being able to start the engine, damage to engine components, illumination of the check engine light, and emissions increases.
It is technically possible to convert a conventional gasoline vehicle to run on E85; however, such conversions would likely be illegal unless they are certified by the U.S. Environmental Protection Agency (EPA). In addition, converting a conventional vehicle to E85 may violate the terms of the vehicle warranty. For more information on the vehicle conversion processs, please visit EPA’s Web site at: www.epa.gov/otaq/cert/dearmfr/cisd0602.pdf. "
FFV conversions are considered “Aftermarket Conversion Systems”, not just “Devices” and therefore are required to obtain a Certificate of Conformity. The same emission certification required of a new vehicle. Currently no conversion kits are approved by the EPA.
To date none have obtained a Certificate of Conformity. Two are in the approval process.
It is technically possible to convert a conventional gasoline vehicle to run on E85; however, such conversions would likely be illegal unless they are certified by the U.S. Environmental Protection Agency (EPA). In addition, converting a conventional vehicle to E85 may violate the terms of the vehicle warranty. For more information on the vehicle conversion processs, please visit EPA’s Web site at: www.epa.gov/otaq/cert/dearmfr/cisd0602.pdf. "
FFV conversions are considered “Aftermarket Conversion Systems”, not just “Devices” and therefore are required to obtain a Certificate of Conformity. The same emission certification required of a new vehicle. Currently no conversion kits are approved by the EPA.
To date none have obtained a Certificate of Conformity. Two are in the approval process.




