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Originally Posted by rmay635703
That said I dope my fuel with a little e85 for better octane, since the mod (real cost) to have a car burn e85 is under a $100 it is foolish not to have every new car on the road at least partially ethanol ready.
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At least in Brazil almost every new car currently for sale is flexfuel, and the automakers don't charge more for that feature (altough the currently predominating flexfuel system in Brazil relies on an auxiliary gasoline tank to improve cold-start ability since our ethanol is not blended with gasoline).
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GDI could be used to better this end but thus far no one is using it for that purpose.
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Direct injection would really be a great improvement to the current generation of flexfuel engines back here, attenuating the knocks while running on gas while still allowing an increasement in the compression ratio to get a higher efficiency with ethanol.