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  1. #1

    Question Exhaust help - True Dual Exhaust Possible???

    I went to the muffler shop where i got my exhaust done originaly and i liked there work so i asked him how much it would cost to put true duals and an H pipe and he said he couldnt do it without throwin the sensors, but my buddy did it on a truck the same as mine and it didnt. Has anybody done this and did it throw the sensors? Also would an h pipe or an x pipe be better for tourqe?
    Im tryin to get it as loud as i can without removing the cats.
    Please help with any of the questions.
    Last edited by Steve; 08-10-2010 at 10:39 AM. Reason: better title
    1999 Chevy Silverado Z71, single cab short bed
    5.3, K&N cold air intake, Diablo sport predator,
    33" mastercraft mudders, 145,000 miles,
    2.5"true duals, 3'' slash cut tips
    :sign0011:

  2. #2
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
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    Default

    i dont see why it would through a code by doing that, but who know these days. I would think as lonk as it was after the cats it wouldnt make a difference, but also unless you plan on getting long tube headers and high flow cats i dont think it would be a big difference or worth the cost.
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

  3. #3

    Default

    First, try a different exhaust shop. As long as the exhaust is done after the cats, (ie. cat-back system), there won't be any issues with sensors or throwing codes. I'd also consider ditching the "true duals" route. Just have 'em create a Y after the muffler and you're good to go!

    2009 GMC Sierra Denali AWD

  4. #4
    Legend

    Join Date
    Feb 2008
    Location
    Red Wing, Minnesota, United States
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    Default

    yeah if you are just doing a cat- back the just a single in dual out is gonna work better, unless you are starting at the motor and replacing it all putting a dual in and out would loose to much backpressure as it didnt come that way from the factory
    99 K1500 Suburban LT "THE BEAST"
    Hypertech III, K&N, true dual
    285/75/16
    ___________________________
    Jason

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