This option is specifically for adding an additional tune for E85 Ethanol fuel. This is an ADDER meaning that you must have already purchased our custom tuning, in order to receive an E85 Tune based off of your Gasoline tunes.
Please read our important notes below regarding ethanol content in your fuel.
Important usage tips for E85 Ethanol fuel
• Our tunes are designed to run on gasoline, or on E85, but NOT a blend of the 2 fuels. Because the Air/Fuel ratio is drastically different between the 2 fuels, a blend will cause problems with the tune and potential drivability issues.
• When switching between 2 fuels, you MUST drain all fuel from the tank before adding the next fuel type. Any residual in the bottom of the tank will throw off the tune from its accuracy. Run your fuel tank to Empty, and then fill completely up with the next fuel. And then drive it around for awhile before topping off again with the fuel, in order to ensure the old fuel is diluted out as much as possible.
• This is the number one problem that customers report about drivability issues related to E85 use. Understanding how E85 works is important to the health of your engine and the performance of your car.
• Always use an alcohol tester to test every batch of E85 that you buy at the pump. It can vary from E50-E90, so you want to make sure you are somewhere close to E85, ideally no farther outside of E79-E88 or you may start to notice small issues.