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Originally Posted by Bad340fish
I think its kind of like fuel octane, once you have enough, your have enough and adding more won't do any good. But how do you know if you have enough without trying more? lol


x2. Where it will benefit is when the tune is off a little and/or you're exceeding the capability of the ignition + plug gap with cylinder pressure.

'18 Ford Raptor, random motorcycles, 1968 Plymouth Fury III - 11.37 @ 118