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I have a 2012 GMC Sierra 1500 with 2.75" exhaust pipe. I am wanting to delete my muffler and add a glasspack without welding. Problem is, I can't find any adapters to fit anything. Do I go with a 3" or a 2.5" glasspack? And whichever one I go with, what size adapters/reducers do I use? The muffler shops in this area charge around $350 for this work, so that's the reason for doing it myself. I appreciate any help given!!
Hello everyone, I currently have the GM Borla Performance Exhaust on my 2018 6.2L and I want more sound. The guys at muffler shops recommended I replace the muffler with this one: https://www.holley.com/products/exhaust/mufflers/street_chambered_mufflers/40_series_original/parts/430402 Part number:430402. I am aware that my current system has a flapper which eliminates drone but would that carry over to this louder muffler?
Well, paid $80 to get the muffler and flapper cut off on my 19 with the 5.3l..
The drone is pretty bad and it sounds a bit too airy. At idle it sounds great, same with hard acceleration.
On my 14 with the 6.2L, this mod sounded great.
Should I have kept the flapper? I thought I read plenty of people who said save money do a muffler delete. What can I do to help this out?
By Max M
Trading in truck and looking to sell the exhaust I had on it for about a year. It’s in great shape. Asking $650 with shipping costs paid by me.
Part number is 140550BC on borla’s website. Pm or reply if interested. Located in Orlando, Fl if anyone wants to local pickup and avoid dealing with shipping.
Replaced my stock exhaust ('19 Sierra, 4WD, Extended Cab) with a Borla. What the hell do I do with the stock exhaust? Can't envision a need for it anywhere. Just hold on to it or is there a market for stock gear?
Just looking for suggestions so it doesn't sit in my garage!
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