02Z28

iTrader: (11)

I just installed Pacesetter LTs and their y-pipe with GMMG exhaust with no cats, and I think its to loud and it kind of sounds like farm truck exhaust. I'm going to the exhaust shop tomorrow to have my stock rectangle tips welded back on, would it help if I welded a 12 inch dynomax race bullet muffler right after the y-pipe ends? What do you guys think I should do?

ws6dude

Put your cats back on

black_knight

iTrader: (1)

You mean "GMMG exhaust too LOUD! "

And IMO, its not loud enough.

But the bullet muffler sounds like a better option than cats. Both in terms of sound/power and because I hate the EPA.

Trans Am WS6 RGS

Ive heard the GMMG in person and didnt think it sounded loud at all. Even my true duals with Sweet-Thunder Chambered Mufflers isnt that loud. I of course am running cats. My friend has a similar True dual system but isnt running cats and his is louder than mine. IMO mine sounds better

Ron@Vengeance

iTrader: (51)

I would put on a set of high flow cats. The cats that TTS uses are very free flowing. I have only seen 3 to 5 rwhp by removing them. Cats will also give you a much more mild sound which you seem to desire.

2k2blkss

Yep yep, what they all said Put the cats on and all will be well

WS6 ON STERIODS

Welding in the bullet right after the y pipe will help cure the rasp. That will make the system a bit quieter. As far as the cats I say hell no. Why would you put the cats back in? Do you want to lose power

KrazyDan

dont be saying that. im ordering my headers tomorrow to go with my gmmg. ive been worrying about it being to loud. i am ordering a catted y though. should i be worried about it being to loud?(kooks headers and catted y,gmmg)

Carbon

iTrader: (3)

It shouldn't be any louder than the setup you have now. I wouldn't worry

deviate42

iTrader: (2)

thats gonna sound sweet.

watch out for the coppers though. they are out and about

bigMAC

Here is my car with headers, no cats and gmmg

http://www.ls1sounds.com/GMMG/gmmg_p...ORY_00-WS6.wmv

KrazyDan

thanks for the reassureance guys. sorry to steal the tread

ram-it

Well, I just put the cats back on my car today because it sounded too much like the loud mouth at WOT. Sounded good at idle though. With the cats on it sounds much better to me and no more popping like a farm truck. FWIW, the GMMG was designed to be used with cats. That is why so many people who add headers seem to not like the sound of it anymore.