GMC Performance Exhaust Experience

Discussion in 'Performance' started by battledenali, Jan 9, 2018.

GMC Performance Exhaust

  1. Good Tone

    75.0%
  2. Bad Tone

    0 vote(s)
    0.0%
  3. Not enough of a change

    25.0%
Sponsored By: Black Bear Performance
  1. robphelan

    robphelan TYF Newbie

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    so, on the loudness scale Borla Touring < GM Borla < Borla S

    is that correct or is the GM branded the same as the touring?

    I'm looking to replace my stock exhaust on my 2017 Denali, but hate to spend that much if the Touring is only slightly more aggressive than stock.
     
  2. battledenali

    battledenali Member

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    I will upload a video later. It’s loud enough that when I auto start in the morning there is no confusion wether or not the truck is running. But it’s not so loud that my neighbors hate me.
     
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  3. Tk59194

    Tk59194 Full Access Member

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    I love my GM performance exhaust. Perfect tone, no droning.

    Robphelan, the GM performance exhaust is the Borla Touring.
     
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  4. justaspade

    justaspade TYF Newbie

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    I spoke with Borla about the tone, as I thought it would be a little louder. According to a tech, it is designed specifically by GM and Borla, stating it is not a direct touring or S type, but a hybrid right in the middle because of the valve.
     
  5. Agent WD-40

    Agent WD-40 Full Access Member

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    Does that mean that none of the Bolra branded systems have the valve? I thought their touring system did have a valve.

    Wonder if the GM Borla is an S-Type muffler with the valve that knocks the sound down...
     
  6. justaspade

    justaspade TYF Newbie

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    It's my understanding that the valve is exclusive to the GM Borla, not the stand alone Borla system.
     
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  7. AZCreeker

    AZCreeker Full Access Member

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    I'd really like to know the answer to this:

    What is the muffler part number that comes with the GM branded Borla exhaust.
    Why couldn't someone just buy the muffler itself, weld it, keep everything else stock and achieve exact same result for a fraction of the cost.
    can anyone crawl under their turck and find the part number of that muffler?
     
  8. AZCreeker

    AZCreeker Full Access Member

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    I am looking for the quietest option that still has some tone to it.
    Similar to last gen stock 6.2 Escalade I remember listening to
    so quiet ok but any improvement in tone over stock?
     
  9. Agent WD-40

    Agent WD-40 Full Access Member

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    I would say the GM Borla system is the best choice for you. It is a little bit of a deeper and smoother tone than the last gen Escalade but similar in volume. No drone and keeps the switch over to 4 cylinder mode transparent.
     
  10. AZCreeker

    AZCreeker Full Access Member

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    I am astonished how my quiet my suburban is as is, stock, I dove next to it and its so quiet it reminds me of a lexus ls460 or a town car in the way its so muffled....

    I am wondering if instead of spending more than 1k on the borla GM branded catback, I could simply buy the same muffler from borla and weld it in place of the large suitcase muffler currently in the truck.

    Anyone has done that?

    Thanks!
     
    Last edited: Feb 11, 2019

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