First Drive Since GMMG Install
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Joined: Jul 2003
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From: Petersburg, MI
First Drive Since GMMG Install I finally put full insurance back on my car and got it out of the garage since the weather has finally turned. I installed the GMMG and Pro 5.0 over the winter. I started the car up after installing the GMMG but today was the first day I was able to hear it while driving. I must say, it sounds awesome 
! I think it has even exceeded my expectations. So if you're thinking about buying it, get your *** in gear, you won't be disappointed.
! I think it has even exceeded my expectations. So if you're thinking about buying it, get your *** in gear, you won't be disappointed. Thread Starter
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Joined: Jul 2003
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From: Petersburg, MI
Originally Posted by GregWS6&z28
I want the GMMG so bad, but not worth it around here with the cops. the City sucks!
let's hear some clips of it!
let's hear some clips of it!
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kinda hard with a 3800 converter and 2.73 gears 
modification laws are really strict here in VA. you can get a ticket for any modifiied exhaust after the factory. im squeaking by with having fake cats until a sniffer test comes our way.
modification laws are really strict here in VA. you can get a ticket for any modifiied exhaust after the factory. im squeaking by with having fake cats until a sniffer test comes our way.
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From: I-L-L-I-N-O-I-S
Yes, it does sound great on the LS1...But if you think it sounds good behind stock manifolds, wait until you get some LT headers w/ highflow cats on. 
Now that is a true muscle car sound worth hearing at WOT 
to be honest, the GMMG is the only cat-back system I really prefer on modified LS1's...Only other set-up I'd run on mine is true duals... 
Sounds even better on my LT1 though...
Mike
Now that is a true muscle car sound worth hearing at WOT to be honest, the GMMG is the only cat-back system I really prefer on modified LS1's...Only other set-up I'd run on mine is true duals... Sounds even better on my LT1 though...
Mike
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From: I-L-L-I-N-O-I-S
Originally Posted by gettinthere
Congrats man! I've been running GMMG for a year and a half now. I love it. Wait a few weeks untill it starts to sound better after it gets a little "burnt out".
Originally Posted by gettinthere
Congrats man! I've been running GMMG for a year and a half now. I love it. Wait a few weeks untill it starts to sound better after it gets a little "burnt out".
Only like fiberglass packed mufflers burn out, such as magnaflows, bullets, etc.
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From: Petersburg, MI
Originally Posted by ZEEMAN
the GMMG is the best ever. to get the full effect u gotta let someone drive by in it and hear all the tones as it approches then the boom as it passes