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12-23-2009
Honestly...it is all in the car. Everyone is different...hell there was a '97 GTP around here with a PEM's, a 3" Downpipe and a 3.4" with no knock at all...stock T-Stat, K&N Panel filter...high flow cat...stock plugs/wires...you get the idea. Just scan scan scan.
04-23-2010
I doubt I have any nock because I hooked up my gauge and it reads 5 psi I think I have a bad bypass valve
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