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ive done the plugs, next will be wires, just havent had the time.. mods are LT4 Hotcam 1.6RR, ported intake, GM performance heads.. the car was never tuned after the new motor had been put in, thats why i thought maybe it would effect it and make it run rough. I'll check out PCM's for less. What about madz28? i've heard good things about those also
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