kbracing96

iTrader: (26)

Ok, so I have searched and come up with a little bit of info, but I know how you some guys like to change mufflers and stuff, so I though I would ask what all your setups are. Pics would be nice and where the muffler is located (before or after the turbo).

I just put on a catless y-pipe from jegs, which is a nice piece BTW, fit perfect, now it's just too loud and raspy and has a lot of resenation around 65-70. I'd like to put the muffler before the turbo as I am in love with the whistle and don't want to lose it . I'm thinking of going with a Hooker Aerochamber, but can't decide if 1 3" would be enough flow. Which hooker would you suggest, a max flow or aerochamber? What do you guys think?

TurboBerserker

iTrader: (1)

Don't put the muffler before the turbo -- you want as much exhaust pulse hitting the turbine as possible (which is why to ditch the cats ). You won't loose the whistle.

On my 6.0L I ran a flowmaster single chamber race muffler (series 10) and the resonance could be annoying. With the 408 it was ridiculous and after the little roadrage incident, I changed over to a 3" dynomax camaro setup (where the spare tire used to live) for daily driver days and a cutout for go-fast days.

Scott Mills

I just put a Spintech after the turbo and it sounds great. Its a small muffler that will fit without modifications. This is the one I bought 3in in/out.
Spintech

TURBO8

iTrader: (9)

Yeah, I used a split flow muffler. It got the sound down alittle. It's only 6 inches long and 5 inches tall. It was all I could fit behind the turbo. I thought about doing the camero set up. But just put this on, I am happy with it. Everyone loves the sound, I still think it's alittle lound still.

Mort

I put a 14" Flo-Pro dual 2.5" in/single 2.5"out in front of the turbo. The sound is a lot quieter but not as mild as stock. It took away a lot of the low speed resonance and popping sound that I used to get under light throttle loads and it is a lot quieter in the cab. I did a G-Tech run after the install and saw a .10 improvement in my time. I still have the cats installed because I hear the 6L is really loud without the cats.

greentahoe

iTrader: (2)

Do you have a link for the Y pipe? Is it a direct fit for stock manifolds? Is it 2 1/2 like the stock Y or is it 3"? Wish I could help with the muffler thing, but for now Im going muffler less and doing a 3" to 4" reducer and some 4" pipe out the back.

TG02Z71

iTrader: (2)

Going to install this after my turbo some day.
4" I.D. resonator.

kbracing96

iTrader: (26)

This is the one I got Y-pipe It was a direct replacement for my truck. Fit great to the stock manifolds and was $200 shipped. It is 2 1/2", but if you want to use the rear O2's, you will have to move the right rear back about 2-3 inches. They f-up on that one. It does come with 4 plugs for them if you don't want to run any O2's though.


Thanks for the input guys. I'm thinking I'm going to go with a muffler after the turbo and maybe a cutout, but there's just not much room there, cuz I don't want to loose my spare as I travel a lot in this truck and I want to keep the stock look. And Damn, are these thing loud without cats. I even have a full stock tail pipe and it still drone's in the cab.

TG02Z71

iTrader: (2)

I've been driving around with no cats since ealy last fall, ya its loud!!! It gets you allot of weird looks and some scared looks too. The stealth factor is non-existant and I need to do something about the noise too.
Thanks for posting the link for the catless Y-pipe, wish I would of had that last fall!!

F8L Z71

I used like an 18" Magnaflow on mine. Lost some whistle but it made things more livable for daily driivng. I just made a flange so I could easily remove the muffler for racing or when I wanted to be obnoxious.