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Knock retard at start up?

1323 Views 1 Reply 2 Participants Last post by  josh2012eco
Hey guys, ive recently noticed the last week that after my car sits long enough to do a cat warm up cycle, my aeroforce gauge shows up to 1 degree of kr during cat warm up and about a couple minutes after then its gone. It does this on the trifecta tune and the factory tune.

Anyone else had this issue or know what it could possible be?
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