[Shane@DBPerformance]

It depends. Ethanol itself is better for boosted cars than gasoline. It has a very small power advantage over gasoline and it has a high latent heat of evaporation. Methanol also has a high latent heat of evap, which is why methanol race cars don't need intercoolers and can use small radiators, but the reason why methanol is used instead of ethanol is because it also has a significant power advantage over gasoline. The problem with switching to 20% ethanol though might be if they cut the rest of the mixture with some absolute crap gasoline, since the ethanol will raise the octane of the fuel. Gas mileage will also get worse on cars that run normal narrowband O2 sensors and aren't tuned for the ethanol. We already have this problem with our 10% ethanol mixture though.