GMPP Borla 19131346 Touring muffler

[cansled]

Finally the sound I was looking for!!!!!!!

After driving around with only the muffler installed, I couldn't stand it any longer. It was so quiet I couldn't even tell I changed the muffler. Took it to the shop and they removed the flapper and resonator and replaced it with 3" tailpipe. Instant smile on my face. Deep startup, NO DRONE, quiet at cruising speeds and real aggressive accelerating. I can barely tell the change from V8 to V4 and back. I am sure the sport would have been louder but the touring sounds perfect to me. Here are the videos....

Start-up (outside)
https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9734&authkey=!AAEcZOHHcaQtDtc&ithint=video%2c.mp4

Start-up (inside, windows up)

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9705&authkey=!AKXV_ndzmKmBEU0&ithint=video%2c.mp4

Start-up (inside, windows down)

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9706&authkey=!AFwKk0LUxjY55cs&ithint=video%2c.mp4

Slow acceleration

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9707&authkey=!ALTSmkMnKEJiEng&ithint=video%2c.mp4

Aggressive Acceleration (inside)

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9708&authkey=!AODDB5djDY9gnVk&ithint=video%2c.mp4

Aggressive Acceleration (outside-drive off)

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9733&authkey=!AFi-d3VGncihpDM&ithint=video%2c.mp4

60 MPH cruise (with V8 to V4 change on screen)
NOTE: Rumble strips at 15 seconds-not muffler!!

https://onedrive.live.com/redir?resid=B579BF6BC4BF5000!9719&authkey=!AMCYVRDLE6GTSgY&ithint=video%2c.mp4

[hotrodz37]

That sounds great, I have been waiting to hear what it sounds like with the resonator and flapper removed. Sounds fantastic, I think this will be the next mod on mine. Thanks for taking the time to video and share!

[jup06]

OP, are you still happy with this setup? I'm thinking of doing the same thing with either the touring(19131346) or sport(19131347) muffler on a 2015 5.3L. I plan on swapping the muffler, keeping the flapper valve, and deleting the resonator.

[cansled]

I actually have a different truck now that I am leasing and did not put the exhaust on the new truck. However, the thing I miss most about that truck was the sound. I removed both the res and the flapper and was extremely happy. Tried with the resonator and was very disappointed. Not sure how it will sound if you go with the Sport model. Good luck.

[fataslp]

I have this setup and love it, however I want to go back to stock and will trade for a stock catback. I have the touring muffler into dual redtail slash cut black tips.

[tregander]

Fstaslp why are you going to get rid of it if you love it? I am thinking of going thos route but don't want to regret it.

[tregander]

My truck has 1500 miles on it and I dont knkw a lot about exhaust systems. I was curious what the resonator for and if I remove it along with the flapper will i have warranty issues? Also i was thinking of putting a stainless MBRP catback on but I am not sure i like the sound. Any thougbts?

[TxTruckMan]

Because even when it's open it's restrictive as hell.

So? What's a couple of HP at higher RPM? Is he racing his truck?