GMMG exhaust to LOUD!
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From: Joplin, Missouri
GMMG exhaust to LOUD! 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?
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Joined: Nov 2001
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From: San Diego, Ca / Tucson,AZ
Originally Posted by ws6dude
Put your cats back on
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
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. 
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TECH Fanatic
Joined: Jan 2003
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From: San Diego/Schertz,Texas
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)
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Originally Posted by 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)
Originally Posted by 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)
watch out for the coppers though. they are out and about
TECH Enthusiast
Joined: Oct 2002
Posts: 553
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From: Long Island, NY
Originally Posted by 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)
http://www.ls1sounds.com/GMMG/gmmg_p...ORY_00-WS6.wmv
TECH Fanatic
Joined: Nov 2002
Posts: 1,889
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From: Lincolnton, NC
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.
