[Porsche-O-Phile]

Ethanol also eats rubber seals and hoses.

It also has a way different stoichometric ratio than gasoline. Gasoline is 14.7:1 whereas E85 is something like 6:1. Enough ethanol will throw off the stoich and mean you have to burn a lot more of the blend to get the same power.

E85 is pure crap. I try to avoid it wherever possible. There's no upside to it. If you really want to run a crazy-boosted engine, then design the entire thing around methanol with the appropriate injectors, lines, tanks, fittings, etc.