Just got my gmmg installed
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Joined: Sep 2005
Posts: 2,151
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From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
Just got my gmmg installed
All I have to say is WOW love it
Just drove it for the first time after installing dyno don headers, and gmmg, and the sound is amazing
Just drove it for the first time after installing dyno don headers, and gmmg, and the sound is amazing Senior Member
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Joined: May 2003
Posts: 785
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From: Tampa, Florida
Car: 1987 Chevrolet Camaro Z28 IROCZ
Engine: L98 350, mini ramed and camed
Transmission: T56 6 speed manual
Axle/Gears: 10 bolt 3:73 limited slip
Re: Just got my gmmg installed
Yes it dose sound amazing! I have the GMMG on my car with the large tube SLP's. Sounds so wicked. I get so many looks and people telling me how good the car sounds. Plus going under anything with an overpass/tunel/parking garage is fun! Adam :-)
Thread Starter
Supreme Member

Joined: Sep 2005
Posts: 2,151
Likes: 0
From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
Thread Starter
Supreme Member

Joined: Sep 2005
Posts: 2,151
Likes: 0
From: Osceola Indiana
Car: 92 RS(sold) 1989 IROC-Z
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: ones that turn
Re: Just got my gmmg installed
interior noise at highway speed isn't that bad at all no drone at all just a nice rumble, but when you step on it roars, and sounds amazing. I used to have a B&B catback on my car before which is one of the most expensive 4th gen catbacks you can buy, and it sounded like crap compared to this barely loud at all. I will get some pics for you in a couple days ill get some under the car too, because I have to replace a section of pipe that the muffler shop messed up, because it's been bugging me.....apparently their tubing bender doesn't like 3 inch exhaust, and they tell me this after basically destroying the $17 section of pipe I just bought, at least they didn't charge me. Very easy to install the only problem is that THE I-pipe is like 10 inches to short. overall though extremely happy with my purchase I have been wanting this exhaust since I first got my car nearly 4 years ago
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