Quote:
Originally Posted by wparsons
I get more knock on a 91 octane tune with 91 octane gas commuting on the highway than I do beating on it on a track. It's the light-mid load lowish rpm range that's the worst, right about where the RPM's sit at highway speeds.
I don't find I'm getting anywhere near as much knock on a 93 octane tune with 94 octane under the same driving conditions.
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Correct as 91 &93 tunes are same except for timing above 5000 rpm. So below 5000 it same tune your running on 91 vs 94 octane