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Detonation? I raced the car for 2 years with usually 93 octane pump gas. I didn't change my behavior for the 3 races this year.
Also, why would 3 cylinders on one side have this problem and not the other 3?
And, speaking of detonation, is it easy to hear/detect in a 911 SC? I've heard detonation in other engines before and it was easy to detect and no damage occurred. I didn't hear any in the 911.
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