[J4nn3R]

Yes, there is lot of flexfuel cars, I know that. But most efficient ethanol engine is not flexfuel, it compromises too much. Compression ratio, ignition timing, boost pressure etc.. I don't know, could it even have smaller radiator? Of course lot of variables are ecu controlled, but I very much doubt that flexfuel engines very aggressively changes for example timing or boost pressure debending on fuels ethanol contet. They could, even should, thou?

Edit: What I mean, is that typical flexfuel engine is efficient when used petrol fuel and quite ok with ethanol. A pure ethanol flexfuel engine would be an engine, that is efficient with ethanol but petrol option could be some kind of "limb mode", that engine is able to run with it, but very ruined ignition timing and with very high f/a to avoid pinging. Do anybody get, what I'm thinking?