Flex Fuel Conversion

[Formula413]

Josh is right on both points. To me the flex fuel thing never made sense, because if your building an engine to run on E85 you would want a lot of compression to take adavantage of the high octane number and to make up for the lower energy density relative to gasoline. I don't see how you could make an engine run either one without huge compromises. I'd like to know more about the engine management in flex fuel cars.