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BillCT

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Everything posted by BillCT

  1. BillCT
    which Borla muffler did you get/ Thanks
  2. BillCT
    Can I leave the flappers or is it necessary to cut them out? Thanks for your input.
  3. BillCT
    Thanks
  4. BillCT
    Let me know what muffler you put on and how you like it, Thanks
  5. BillCT
    Did you just replace the muffler, or did you do the cat back/
  6. BillCT
    Hello, I just bought a 2020 GMC Sierra 1500 Elevation. It has the duel exit tips in the bumper. Has anybody just put a louder muffler on yet? Borla say it will drone if I don't buy a Cat back sys.
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