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Tuner + question

Discussion in 'Performance & Fuel' started by sierra11, Jun 22, 2012.

  1. sierra11

    sierra11 Rockstar 100 Posts

    I am ordering the traditional tune from black bear and had a question on exhaust. I have heard that gmc exhausts are pretty good but I wanted to know if I got a new muffler or exhaust system would it help even more?

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