In all honesty, I don't know its actually pinging. I've never had it pointed out to me by an experienced person. Now that you bring it up, can you hear a ping on every cylinder? The timing of the sound and rate of the ping at the specific engine rpm only really sounds like its coming from one cylinder maybe. I'll throw some 91/3 octane next fill up and see if that changes anything. If it does or doesn't what does that indicate?
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