Quote:
Originally Posted by StuP
An N52 in 128i trim is ~ 230 base to start with, and with that swept volume running 14:1 on 85 octane is unlikely to work out too well.
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The power increase is proportional, so you can extrapolate a ~50% increase on 230bhp. Even allowing for some losses that is a really ridiculous increase to a NA engine still running on pump fuel (E85 is available at the pump).
Also, how anyone can enter a discussion on engines but not know about E85 is beyond me. Hint...it's not 85 octane, it's mostly ethanol and tunes like leaded race gas. So yeah, I've shown how you can get a shitload more power without touching the rev limit. You disagree?