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  1. DTC's, Problems & Troubleshooting
    Hi everyone, For reference I have a 2000 Regal GS, stock everything except for: - 3" Downpipe without cat - ZZP Stage 1 Throttle Body - High Flow fuel filter - Overkill PCM Let's back up. Completely stock, I scanned for knock with an aeroforce gauge. at WOT I get about 8.6 degrees of KR...
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