E85 on s52

[bradyn767]

So I have an s52 e30 and I'm thinking of doing an e85 conversion with 1000cc injectors. Any idea of how much power I could gain with this setup?

[pbonsalb]

Maybe 5% over 93 pump since more ignition timing after a certain point does not add power. I’d find a tuner who has already developed E85 naturally aspirated tunes for the S52 so you don’t have to pay for dyno time to find out. Go forced induction and the gains are much greater since you can add more boost without risk of detonation.