Quote:
Originally Posted by NoHaveMSG
RPM is not what causes it, has more to do with cylinder pressure, ignition timing, and AFR. I had the toughest time getting knock to go away at 2800-3krpm on my car. You will cause knock to happen easier by lugging the engine then revving it out.
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This is why I only use 94 octane gas. Most of modern tuning is getting the computer to not pull time.