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View Full Version : I got the gmmg catback


DaSkinnyGuy
10-18-2008, 11:03 AM
:rock:

Ok this morning i drove an hour away and picked up this beautiful gmmg. $500 for catback, $70 for tips, $30 in gas. I saved about $300. The I-Pipe isnt in the pics but i do have it. I brought it inside the appartment and spent 40 mins polishing it.

For now it will just be off stock manifolds and stock catted y pipe so its not going to give you the full effect of it with longtubes.

The vid of it on my car turn volume up sound quality is good

http://www.youtube.com/watch?v=xWSFQEEBQus

http://www.youtube.com/watch?v=zlxkLd57GiM

for you LT1 people heres just one i found

http://www.youtube.com/watch?v=oKA68ORNdZo&feature=user

Before polishing

http://i110.photobucket.com/albums/n99/DaSkinnyGuy/gmmg/gmmg001.jpg

After polishing

http://i110.photobucket.com/albums/n99/DaSkinnyGuy/gmmg/gmmg004.jpg

http://i110.photobucket.com/albums/n99/DaSkinnyGuy/gmmg/gmmg006-1.jpg

http://i110.photobucket.com/albums/n99/DaSkinnyGuy/gmmg/gmmg2001.jpg

Anti_Rice_Guy
10-18-2008, 11:09 AM
Loookinnnn good ocho.

DaSkinnyGuy
10-18-2008, 11:17 AM
Loookinnnn good ocho.

opps i had the before and after backwards

bcgetfresh
10-18-2008, 11:19 AM
niceeeee. get that exhaust clip up asap! i wanna hear it

DaSkinnyGuy
10-18-2008, 11:24 AM
niceeeee. get that exhaust clip up asap! i wanna hear it

give me a couple hours having it put on at 1pm, dont forget this will be a catback only so the manifolds and stock catted y pipe will restrict some sound. So i only expect it to sound louder than stock with a better idle sound and noticeable enough above 3,000 rpm to turn at least 1 head.

sweetbmxrider
10-18-2008, 12:23 PM
dude its going to sound sick. looks great. if you don't like it, pm me a price :D

ar0ck
10-18-2008, 03:23 PM
What kind of tips are those? They should look pretty good on the T/A and sound amazing.

DaSkinnyGuy
10-18-2008, 03:32 PM
What kind of tips are those? They should look pretty good on the T/A and sound amazing.

Hooker tips, so theres two of them out by the rear bumper now.

WayFast84
10-18-2008, 03:48 PM
Im not impressed by the sound. I guess you really need a cam to make it sound worth while... Thanks for posting it, Now I know a mufflex exhaust will be perfect for me.

DaSkinnyGuy
10-18-2008, 03:50 PM
Im not impressed by the sound. I guess you really need a cam to make it sound worth while... Thanks for posting it, Now I know a mufflex exhaust will be perfect for me.

it needs headers and a cam to bring out the exhaust i did mention that kind of in my first post.

Anti_Rice_Guy
10-18-2008, 03:51 PM
Im not impressed by the sound. I guess you really need a cam to make it sound worth while... Thanks for posting it, Now I know a mufflex exhaust will be perfect for me.

He also doesn't have headers/high flow cat. Not to mention your engine will sound completely different than an LS1.

qwikz28
10-18-2008, 03:56 PM
i disagree actually. i think this exhaust sounds best with stock motor and stock manifolds. with long tubes and cam, everything sounds similar IMO

NJSPEEDER
10-18-2008, 03:59 PM
Sounds nice and looks good under there. I would still take the tone of my Mufflex 3.5 w/Spintech though. I am also still on stock maniflds and cats......but not for long. heh :evil:

DaSkinnyGuy
10-18-2008, 04:22 PM
Sounds nice and looks good under there. I would still take the tone of my Mufflex 3.5 w/Spintech though. I am also still on stock maniflds and cats......but not for long. heh :evil:

soundclip of yours?

NJSPEEDER
10-18-2008, 04:29 PM
I will have to get some soon. It is a reasonable loud system, but the spintech muffler eliminates a lot of the LS1 rasp nicely.

Should have a sound clip with in the next week or so :)

DaSkinnyGuy
10-18-2008, 06:01 PM
I added another video its the first one but part 2

bcgetfresh
10-18-2008, 08:41 PM
GMMG is the best sounding exhaust for the ls1 IMO. Sounds sick man and will sound even better with LT's and ORY.. Next mods get some subframes and LCA's! Makes a huge difference...

BigRocsFirebird
10-18-2008, 10:05 PM
sounds great man i know you got alot more you want to do with her but i cant wait to see it when school is over or some way i can visit you. but nice and i cant wait to hear pual's thoughts... aha

sweetbmxrider
10-19-2008, 12:22 PM
lt1 sounds dirty!

edpontiac91
10-19-2008, 06:57 PM
Those systems on an LS1 sound sick. Love the sound! I would really like to put on one of those my L98, but it would NEVER sound that good without a cam. Even with my Edlebrock THS headers and gutted cats, my BORLA sounds OK, but I really am impressed on how good it sounds and LOOKS! :drool:

DaSkinnyGuy
10-19-2008, 07:07 PM
Those systems on an LS1 sound sick. Love the sound! I would really like to put on one of those my L98, but it would NEVER sound that good without a cam. Even with my Edlebrock THS headers and gutted cats, my BORLA sounds OK, but I really am impressed on how good it sounds and LOOKS! :drool:

Third gen GMMG soundclips

http://smg.photobucket.com/albums/v201/Monobloc/89%20GTA/GMMG%20exhaust/?action=view&current=GTAwithGMMG.flv

http://www.youtube.com/watch?v=05ZG0kacKek

http://www.youtube.com/watch?v=h0FM5eVASdM&feature=related

Iroc-z86
10-19-2008, 08:28 PM
sounds good, I like it, I like the magnaflow system a lot tho, its deeper and loud without being obnoxious

ar0ck
10-19-2008, 08:43 PM
GMMG http://www.ls1tech.com/forums/images/smilies/nutswinger.gif

DaSkinnyGuy
10-20-2008, 09:22 PM
Alex where did u get that smilies action thing and what does it mean

sweetbmxrider
10-20-2008, 09:25 PM
ls1tech "nutswinger"