We all know the tragedies of having too low of an octane on a higher compression motor. But can you ever have too high of octane?
Thats right, however, if you advance your ignition timing accordingly, you should see some gains. Afterall, thats what efi engines with knock sensors do, they advance igintion untill they register a knock, then bring it back down slightly.speedytang said:To high of a octane will decrease your power if a octane is higher than your engine really needs. Octane is used to slow the burn which if your car does not need anything over 87 octane you could be not only wasting money but costing horsepower.