Originally Posted by cgy-jim
Burns slower? Say what?
It will burn inside the burn parameters in a tighter range but not slower. Just more controlled.
I tried not to go into details and ended up phrasing things wrong.
Octane has to do with detonation resistance. Flame rate has to do with the gasoline itself. But if you are using fuel that makes more power with advanced timing and all the other variables are the same, it means the fuel burns slower which is USUALLY the case with high octane fuels.