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Old 09-26-2018, 09:06 AM   #1
Joey Soul
The Mechanic
 
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Drives: 1SS M
Join Date: Dec 2017
Location: NJ
Posts: 291
knock retard with headers

Has anyone with headers and mid pipes adjusted the knock sensor? I have been running the stock ignition map since adding the headers and always get knock on WOT. A/F is right on 12.5 so i have to assume this is vibrations transmitted thru the exhaust. typically its showing 1-3 degrees of retard. Any useful insight?
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