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Originally Posted by AtomicLabMonkey
From what I've read, there are ways to mitigate the energy content difference by optimizing the engine design for ethanol. Due to the much higher octane, you can use a higher compression ratio and more aggressive spark timing.
As for cost/economics, ethanol should become more and more viable as the cost of gasoline continues to rise and production volume of ethanol is scaled up.
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I believe some manufacturer (I can't remember who, like Renault or someone European) built a turbo car designed for gas and E85. On gas it was like a 30mpg 150hp car, on E85 the ECU cranked up the boost (from like 0.5 bar to 2.0 bar) and it was a 40mpg 200hp car.
Now that's what I'm talking about! I need to get a WRX wagon, convert all the seals and crap to E85 compatible materials, and get a Cobb AP E85 high mileage map as a daily driver.
