GMMG vs Loudmouth
GMMG vs Loudmouth ok whitch is louder. i have a loudmouth on my car right now, and "some people" think its too loud. is the GMMG an improvment in noise level as well as overall quality and sound?
Staging Lane
Joined: Feb 2005
Posts: 82
Likes: 0
From: Chicago
SLP has two new options for those who think the LM resonator is too loud. They now have a bullet type muffler and a more traditional muffler. Both are louder and more free flowing than stock. Using the bullet type muffler would be the equivalent of the "dynomouth" or "borlamouth". I'm sure you can find both for under $100 from one of the sponsors. Just a suggestion...so you can save alot of money for other mods. I beleive the GMMG is around $800.
SLP Muffler Options
SLP Muffler Options
LT, ORY, LM sounds pretty bad (not good), but with cats, the LM sounds pretty good to me (had it on my car). I have LT's ORY, GMMG now and I think it sounds awesome, and with cats, it's even better!! Sounds so bad ***, especially under WOT. I stated above, people have different opinions, I can tell you that sounds clips don't do ANY exhaust justice, I've heard clips online of many exhaust, and then heard them in person and they sound totally different.
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TECH Regular
Joined: Nov 2004
Posts: 461
Likes: 0
From: Corvallis, Or
Originally Posted by neonblack
SLP has two new options for those who think the LM resonator is too loud. They now have a bullet type muffler and a more traditional muffler. Both are louder and more free flowing than stock. Using the bullet type muffler would be the equivalent of the "dynomouth" or "borlamouth". I'm sure you can find both for under $100 from one of the sponsors. Just a suggestion...so you can save alot of money for other mods. I beleive the GMMG is around $800.
SLP Muffler Options
SLP Muffler Options
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IMO i dont think the loudmouth and gmmg are even in the same league, not even close. GMMG has more of the oldschool burble and mellowness to it. Loudmouth is just loud and obnoxious.
Staging Lane
Joined: Feb 2005
Posts: 82
Likes: 0
From: Chicago
If you can afford the GMMG, then go for it. I've heard nothing but good things about it. I personally think it sounds great. But, if you already have a LM, you could get a bullet muffler of your choice and LTs for the price of a GMMG exhaust.
TECH Resident
Joined: Nov 2002
Posts: 857
Likes: 0
From: Orlando
The GMMG does definetly have the burble Brett95z refers to. Much more refined than any other exhaust I've had on my car and believe me I had a bunch of them before I finally got the one I wanted in the first place. GMMG gets my vote.
Staging Lane
Joined: Jan 2004
Posts: 58
Likes: 0
From: Huntington Beach, CA
I have GMMG and I prefer the purring drone to the irritating drone of the loud mouth, I listened to several exhausts on several different LS1's and decided GMMG was for me. I considered Corsa and hooker too.
If u have $700 bucks to spend go for the GMMG. It's worth it and it has a badass sound w/ or w/ out longtubes! If u dont want to spend that much than just replace your resonator with a Borla XR-1. Good luck!
Loudmouth is more tinny and rattly sounding (to use scientific terminology) 
GMMG is not quite as loud but has a deeper, more muscular sound imo and sounds AWESOME with my LTs & catted Y!
GMMG is not quite as loud but has a deeper, more muscular sound imo and sounds AWESOME with my LTs & catted Y!
GMMG will be a bit more quiet than the loudmouth with shorties & cats. I have not had a problem with cops and I think they are kinda strict around here. Just keep your foot out of it and upshift
On The Tree
Joined: Jan 2005
Posts: 151
Likes: 0
From: Pittsburgh PA
im thinking about running pacesetter lts and an either an ory or catted y-pipe, i already have a LM with a dynomax bullet muffler electronic cutout. Which do you guys think will sound better, with cats or without cats?
I just got my GMMG system installed at GMMG, and I am more than happy with the sound. It just right, smooth mellow idle (with cats of coarse), and mean and aggressive at WOT. You'll be saying MMMMGMMG.