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  1. PCM's & Tuning
    I have an ultra gauge which can detect knock retard but I have never seen any value besides 0. Also under normal driving my timing is -27deg, is this normal? Here is the info and list of mods on my car. My car is a 97 pontiac GTP, it has full exhaust with resonator delete, wrapped headers to...
  2. 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...
  3. DTC's, Problems & Troubleshooting
    First post here, definitely glad I found this place! I've got a '92 olds 88 with a series 1 in it, about 199k miles on her now. Start up great, runs great for a about a minute, and then begin the problems. Starts missing at low rpms at about 25% throttle or more. Cruises fine at all speeds...
1-3 of 3 Results