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my buddy has been telling me about this place in town that has 110 octane gasoline. My question is, if i run that on my car, will it do any harm to it? I have a full aftermarket exhaust without cats, so there wont be any problems with emmisions. Does running that rich of fuel compared to regular 92 octane premium even help your car in terms of gaining HP, or is it all just a joke?
If you have a stock Gt you don't even need 92 octane. 110 would be the largest watse of money you could probably think of. It will do nothing at all for performance.
you will lose horsepower on a stock car running 110 and not getting tuned for it.
Bingo.
Octane is simply a measure of how hard it is to ignite. The nice thing about higher octane fuel is you can run more timing (and get more HP) w/o having to worry about detonation.