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  1. 04.5-05 LLY Duramax Powertrain
    is there any type of additve that i can add to make my dmax smoke more ??
  2. 04.5-05 LLY Performance Parts Discussion
    will it hurt my truck to take my after markit muffler off and make it streat pipe but it wood be shorter like right in fornt of my back tire .cuz on a gas motor it wood f up the valves
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