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dpfs are yummy w/ ketchup

  1. Another Rookie

    Hey all, I just brought home my "new" 2005 LLY GMC 2500 CCSB 4x4. It already has a monster downpipe-back exhaust, but no chip, programmer, or intake. The previous owner had an Edge chip and AEM CAI installed, but removed them when he traded it in. Any help or advice with basic "bang for the...