0235SS93

iTrader: (1)

Hey guys, my current exhaust setup is thorley tri-y headers with no cats, with a magnaflow 12649 with a 3" tailpipe dumped over the axle. I really like the exhaust note, but sometimes its just too loud. I'm considering either welding in cats or changing my muffler/catback all together. Part of me is leaning towards the second option due to the fact that I do kinda like the deep rumble of a chambered muffler. But I want to quiet it down some and im afraid swapping for a chambered muffler will just make it louder. Any suggestions?
Here is the muffler im currently running: Hey guys, my current exhaust setup is thorley tri-y headers with no cats, with a magnaflow 12649 with a 3" tailpipe dumped over the axle. I really like the exhaust note, but sometimes its just too loud. I'm considering either welding in cats or changing my muffler/catback all together. Part of me is leaning towards the second option due to the fact that I do kinda like the deep rumble of a chambered muffler. But I want to quiet it down some and im afraid swapping for a chambered muffler will just make it louder. Any suggestions?
Here is te muffler im currently running: http://m.magnaflow.com/02product/sho...=main&id=10983

Koots

I find using a simple, correctly sized glasspack in whatever length you can fit or afford, will clean up the exhaust note of a crazy sounding exhaust.

I've used cherry bomb due to price and availability, but any straight through muffler can work great or better.

low2001gmc

iTrader: (137)

most on here put on a bullet type muffler in front of the other muffler to tone it down. a longer case same style muffler will also tone it down.

KC_kid

iTrader: (5)

How do you like those tri-y's? I'm looking at doing those Thorley long tubes with the Magnaflow 12589, curious your thoughts on the headers. I don't have much exhaust experience so I can't really give advice on your setup, sorry for the thread jack.

silverado2000

I had the same proablem when my truck was a h/c 6.0. I got one of the magnaflow xl with a 12 bullet muffler from summit in front of it. Truck sounded great nice and smooth and quiet down low but still loud enough on the top end to enjoy gods gift know as the LS motor.

0235SS93

iTrader: (1)

I love them, with 2 minor complaints but only about the y-pipe. 1) the y-pipe is 2 piece, which isnt necessary at all, and it was leaking at that joint. So i just welded it up. 2) because they sent a mount for the rear of the y-pipe, it's semi solid, which causes the donut gaskets at the collector to "pop" when the engine rocks. However, I took the mount out and it's much quieter. Now for the positives: these are some of the best fitting headers I've ever installed! Ive installed kooks, obx, edelbrock, and pacesetters. They have TONS of clearance everywhere! And no leaks with reusing the factory mls gaskets! Noticed a lot more low-end grunt, but was surprised that the truck pulls much harder from 4500rpm up now too! All in all, im thrilled for the $550 shipped I payed.