Muffler/Cat questions

Discussion in 'Engine & Drivetrain' started by Shaw520, Aug 2, 2018.

  1. Shaw520

    Shaw520 Full Access Member

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    So at 140k my muffler is looking worn for the worst,...heat shield is beginning to make a racket and alot of popping and snapping noises on cool down. Looking for muffler recommendations,... slightly louder then stock on the outside is ok, but dont want any cab noise. Also, is there and success, benefits or detriments in driving a rod through the cat in an attempt to open it up a bit ??? Thank you, Shaw
     
  2. swathdiver

    swathdiver Full Access Member

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    Lots of muffler options out there. If you hollow the cats you'll need to turn off the lower O2 sensors or get those adapters that trick them so they don't throw codes.

    I like the sound of the Borla, Corsa and Magnaflow systems without drone. Love Flowmasters but they can drone.
     
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  3. Tonyrodz

    Tonyrodz Full Access Member

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    The exhaust would def be louder if you did that to the cat. The honeycomb sort of acts like a resonator for the exhaust. With a hollow cat the exhaust is much louder.
     
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  4. Countryboy07

    Countryboy07 Full Access Member

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    Super pleased with my Magnaflow 12259 on the Yukon, noticeably louder when on the skinny pedal, but very calm while cruising
     
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  5. HiHoeSilver

    HiHoeSilver Away!

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    Same with my carven TR.
     
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  6. HiHoeSilver

    HiHoeSilver Away!

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    You can also trick the sensors with about
    $. 08 worth of resistors from the electronics dept.
     
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  7. Walkercraig01

    Walkercraig01 Full Access Member

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    mufflers , this motor sounds great with a lot of different kinds hard to make a bad choice
     

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