Quote: High octane gas has a slower burn rate than regular gas. High octane fuel does not make more power. Running more octane than you need can produce less power.
high octane makes it more resistant to detonation/ spontaneous ignition. high octane fuel can make more power- dynos don't lie. much.
Up to the point of your engines need for octane. After that point the power can deteriorate and using more octane than the engine wants is a waste of money. The burn rate of high octane is slower than lower octane. This the reason for more advance needed to get a complete burn for the power stroke of the engine.
