GMMG Cat-Back

[TheMyth]

Does anyone know how GMMG's chambered cat-back system flows?? Considering a set of headers this year, but don't want to waste the money if the chambered exhaust is going to be too restrictive to gain anything.

[c0ncEpT]

Does anyone know how GMMG's chambered cat-back system flows?? Considering a set of headers this year, but don't want to waste the money if the chambered exhaust is going to be too restrictive to gain anything.

GMMG is considered one of the better flowing catbacks out there. Do yourself a favor and get a catted Y-pipe tho. Its very loud and very raspy with LT's without them.

[TheMyth]

Thanks for the response and info. I was told it would be loud with LT's when I was first looking at the system. Any suggestions on the LT's and catted Y ???

[MunsterZ28]

Thanks for the response and info. I was told it would be loud with LT's when I was first looking at the system. Any suggestions on the LT's and catted Y ???

i think its preference. ive heard a gmmg with long tubes ory and when they went wot i thought it sounded amazing. a dd system? prob not but when you want people to know ur coming lol it gets the point across.

[OVRKILL]

Definately a subjective subject. GMMG + LTs = LOUD...no disputing that. Have a Corsa myself....love it. Not a fan of cat-less systems...

LT list should start with Kooks or American Racing...everything else is a placeholder until you upgrade to them. My .02

[nascarnate326]

Honestly, you may want to get the GMMG with your stock headers and see if you like it, then go to long tubes.

GMMG was developed around stock manifolds, not LT headers.

IMO all the cars that sound REALLY good...have LS1, stock manifolds, and GMMG.
http://www.gmmginc.net/media/Video/ChamberedExhaust.php -
they show it with LT in the video though

[c0ncEpT]

ive heard a gmmg with long tubes ory and when they went wot i thought it sounded amazing. a dd system?

Every system is going to sound good at WOT with LT's. Its partial throttle and crusing that defines a good catback.

[TheMyth]

Honestly, you may want to get the GMMG with your stock headers and see if you like it, then go to long tubes.

GMMG was developed around stock manifolds, not LT headers.

IMO all the cars that sound REALLY good...have LS1, stock manifolds, and GMMG.
http://www.gmmginc.net/media/Video/ChamberedExhaust.php -
they show it with LT in the video though

I have been running the GMMG cat-back for 3 years now with my stock manifolds, and like it a lot. That is why I was asking the question. I am planning on a swap to a LS6 intake and considering LTs for a few extra ponies, but if it wasn't gonna be worth anything, then I wasn't going to waste my time since I have no plans to get rid of the GMMG, I like it too much. The car is a DD. Thanks for the input guys.

[Formula Z]

i think if you added some hi flow cats with the lts it will still sound very nice and pick up some power with a tune

[TheMyth]

Definately a subjective subject. GMMG + LTs = LOUD...no disputing that. Have a Corsa myself....love it. Not a fan of cat-less systems...

LT list should start with Kooks or American Racing...everything else is a placeholder until you upgrade to them. My .02

I understand that Quick Time Performance and Texas Speed Performance both have quality systems, all of which look to be a bit of coin. Just asking and shopping around at this point.

[TheMyth]

i think if you added some hi flow cats with the lts it will still sound very nice and pick up some power with a tune

Thanks Mike, still looking and trying to get an idea of what it will cost.