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Which muffler

This is a discussion on Which muffler within the Exhaust forums, part of the Performance category; 2004 chev duramax, I want a good sound with added performance. Although not to loud that may rumble the interior ...

  1. #1
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    Which muffler


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    2004 chev duramax, I want a good sound with added performance.
    Although not to loud that may rumble the interior or wake the neighbors. Any ideas? Thanks....

  2. #2
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    Re: Which muffler

    go with magna-flow could not be any better, I have a 8.1 gas engine which well sound about the same as your engine. :fsc:

  3. #3
    Registered User ojaijohn's Avatar
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    Re: Which muffler

    Dynomax. I put one on my Suburban since the passenger compartment sits on top of the muffler and it's real quiet at idle and cruise, but has a decent bark on when you jump on the gas. Flowmasters are popular but they're noisy, not a good choice unless you like to talk really loud.
    The crumple zone in my OOBS is the other guy's car.

  4. #4
    Ol' Skewl BS'er flotsamm's Avatar
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    Re: Which muffler

    Flowmaster 50 series would be a good choice also. Not as loud as the 40 series, but enough to know its there.
    5.7L, 5-Speed, 4/6 drop on 245/45/18's

  5. #5
    Registered User Toclcl's Avatar
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    Re: Which muffler

    For a duramax have you looked at MBRP exhaust?
    1998 Z71, Sittin on 24s.

    1999 Z71 on 22s (pic soon)

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