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Old 04-24-2014, 01:54 PM   #28 (permalink)
1slow370
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yup more octane lets you adavance the timing which gives you power, eventually there is a point that regardless of octane you cant advance the timing any more and still make power, you will actually start to lose power. An NA car only needs enough octane to get the timing to that point. With boost since higher octane doesn't detonate as early, you increase the boost and the timing and for a whole hell of a lot more power.

With a higher octane you could typically run a little less rich as well which will net even more power. On a car with high boost instead of running 10 to1 afr you could run 11 to 1 afr since you don't need as much of a safety factor.
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