Asian LSX

iTrader: (4)

Is it just me being deaf or does the GMMG catback sound somewhat "quiet" even through stock manifolds, cats and Y pipe? I realize it won't sound like a stock car but I kinda feel disappointed. I guess this just fuels the motivation to put on my long tubes and Y pipe.

97ta383

iTrader: (5)

I have lt and an ory with gmmg and i love it, it defintly got louder after the lts i would prob use a different muffler if i was going to put in a cam though only cause i daily drive my car if i had a beater i wouldnt really care how loud my t/a was!!

WeathermanShawn

iTrader: (1)

I agree. Had same experience.

Here's the good part. Add headers..sounds good. Add cam..sounds great. Add Heads..sounds beautiful.

Previously ran a Borla (w/plates). It was louder than GMMG in stock form and even with headers. Perhaps it is the nature of catbacks in general to 'wake up' as power increases, but now with H/C it has the perfect rumble and sound that everybody talks about.

I am sure someone will disagree as sound and taste is highly subjective. Just letting you know it seems to like more airflow/power to really shine.

Good luck.

..WeathermanShawn..

silverLSWON

iTrader: (16)

put long tubes and an ory with the gmmg... you'll prob hate it

TORCHD 02 TA

iTrader: (39)

Here is my idle clip with GMMG and my cam

1Loudz28

iTrader: (47)

gmmg thru lts/catted y and f13

Flawless02SS

iTrader: (9)

It will def get louder with LTs and CATS!

RevGTO

iTrader: (12)

I really liked my GMMG with stock manifolds & Y. Like you say, pretty quiet in regular driving but I thought it sounded awesome at WOT. Headers & ORY made it unbearably loud and raspy.
Cats, a powerpack in the I, and resonator tips made it sound nice again if still a bit loud. But, as was stated, everybody's tastes are different.

SSmokin99

iTrader: (7)

I just saw someone yesterday with a black SS. He was all stock with a GMMG and it sounded pretty loud. I have GMMG and it was somewhat loud, but when I added LT's and ORY it's CRAZY LOUD when I get 2000rpm+
http://www.youtube.com/watch?v=pocrNvLbyys
http://www.youtube.com/watch?v=4TirTAJBOW0
http://www.youtube.com/watch?v=HptGjztwsy8
In the drive by vid I shifted at about 1500rpm

2002SS#1811

It will sound better with LT'S. Keep some HF Cats on as in my opinion the GMMG rasps, drones and sounds like **** without them. My .02 cents. GMMG was the second exhaust I ran and ended up selling it.

camarosam22

I thought mines was pretty loud, I get compliments from people asking if I have headers. But at higher speeds it does quiet up a bit. 1-3rd gear is just awesome sound though. Cant wait for headers.

Flawless02SS

iTrader: (9)

everyone talks about a exhaust being raspy, I kinda like the rasp, it sounds nasty, wicked and mean at the same time. On all my exhaust systems the CATS MUST GO ! That was my very first mod when I got my car home.

WeathermanShawn

iTrader: (1)

I guess each to his own 'rasp' sound quality. Agree it is highly subjective.

To the OP, another option is to add an electric cutout. If you prefer a catback/w cats or you want to hear more of a raw sound of a cutout, you can have both.

Many states are cracking down on exhaust decibels and a number of states at least do a visual on catalytic converters. As I stated earlier I also felt the GMMG seemed 'tamer' at first.

Just giving you another alternative. An electric cutout might not be a bad idea, both for HP and if you like loud (but all at your choosing).

..WeathermanShawn..