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bully dog sux

  1. Gauges, Electronics and Wiring.
    i have a 07.5 LMM duramax and i'm in the market for a tuner. i found a great deal on a bully dog GT gauge/tuner part # 40420. i like the fact that i can change between the haul and performance tunes easily as i do alot of short haul on and off towing. i mainly need this thing to delete the...
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