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  1. S

    Louder Duramax

    I plan on doing a lot of things to it. The whole exhaust system is one thing, from what I read a tune is pretty mandatory also
  2. S

    Louder Duramax

    Hey guys. So I recently bought a 23 gmc duramax 6.6. I work it to the bone. It’s a very quiet truck. Looking for some options to really open it up. What are some of the first things I should do to it to be able to achieve a louder overall sound and maybe a flutter eventually. I already put 60k...
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