[arpad_m]

Sometimes the truth can be that good. The flex fuel kit with the appropriate tune allows you to use anything from E10 (91 or 93) to E85, and the ECM will adjust automatically, because the kit for the Camaro contains a sensor that reports alcohol content in real time, it doesn't operate like a switch between two fuel types. You can mix fuels as you wish with this kit.

Note that if your car has any power adders but no fuel system improvements, you may not be able to run full E85, because it requires 25-30% more fuel for E85 (btw this also means your fuel economy will drop by this much), and the stock fuel pumps won't be able to keep up at higher loads.