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View Full Version : GMMG or True duals

spina74
12-01-2012, 11:44 PM
I currently have a gmmg cat back on my ws6, but lately I've been thinking about going with true duals. Clearance is not really a concern of mine. What do you guys think stay GMMG or go duals.

Just some youtube videos I found.

This is exactly how my car sounded with the MS4
http://www.youtube.com/watch?v=8yWi9Dfv_pQ

This is the dual setup I'm looking into now.
http://www.youtube.com/watch?v=ObT8LOKFLx0
coolmanvette75
12-01-2012, 11:54 PM
I say go true duals, but my opinion is kinda biased. If you can get around the clearance and the fact that it will have to be fabricated, then go for it. IMO a proper td setup outshines a y-pipe setup in sound and performance. With that being said, the gmmg sounds great for a y-pipe car. Maybe true duals with power sticks? Basically a true dual gmmg exhaust...
Dudbird113
12-02-2012, 12:58 AM
Makes me wish the trans ams had back bumper like the formulas or camaros so theres no cutout in the bumpers for the exhaust. Then id just dump it haha
LTb1ow
12-02-2012, 08:34 AM
I say go true duals, but my opinion is kinda biased. If you can get around the clearance and the fact that it will have to be fabricated, then go for it. IMO a proper td setup outshines a y-pipe setup in sound and performance. With that being said, the gmmg sounds great for a y-pipe car. Maybe true duals with power sticks? Basically a true dual gmmg exhaust...

Prove the performance part please?
spina74
12-02-2012, 11:52 AM
updated with some videos I found
JW
12-02-2012, 11:59 AM
Are you going for sound or performance?

JW :D
deadtrend1
12-02-2012, 11:59 AM
No use for true duals. The work cost for negligable power gains isn't worth it
spina74
12-02-2012, 12:33 PM
Are you going for sound or performance?

JW :D

Both
Slow-V6
12-02-2012, 04:52 PM
loudmouth!
Mark B
12-04-2012, 08:12 AM
QTP cutout(s)!!!
B4C
12-06-2012, 12:57 AM
loudmouth!

BARFFFFFFFF

QTP cutout(s)!!!

DMH cutouts ftw
Dudbird113
12-06-2012, 02:34 PM
Loudmouth 2 FTW
WildBillyT
12-06-2012, 02:46 PM
loudmouth!

QTP cutout(s)!!!

BARFFFFFFFF



DMH cutouts ftw

Loudmouth 2 FTW

All of these FTL. He already has one of the best Y-pipe exhausts out there, why go to a cheaper setup that sounds worse? Guys practically get into fistfights about used GMMG setups.

Stay with the GMMG unless you NEED a true dual setup IMO. Find someplace else to spend that money.
JW
12-06-2012, 02:59 PM
I'm with WildBillyT on this one.

JW :D
k_garretson23
12-06-2012, 05:57 PM
tsp duals ftw. sound better than any catback imo, i felt a gain going from my ****** pacesetter y-pipe magnaflow combo.
LTb1ow
12-06-2012, 06:20 PM
Ricers make their cars loud for no reason too.
grazi
12-06-2012, 08:06 PM
If you want to be loud, Ill trade you my LM1 straight up for your GMMG. Wait, I'll throw in $100.00.
spina74
12-06-2012, 08:27 PM
Ricers make their cars loud for no reason too.

unlike a ricer, mine actually moves
Lt1_8U
12-07-2012, 12:36 PM
Your exhaust sounds great now, if it sounds like the video. If you want it louder just put a cutout at the end of the y pipe
spina74
12-07-2012, 04:04 PM
Your exhaust sounds great now, if it sounds like the video. If you want it louder just put a cutout at the end of the y pipe

It use to when i had one, I was using the ms4 as a comparison since its a more common cam then what I have now. I think I'm just gonna get a new y-pipe and keep the gmmg...mines got that typical cut and weld merge.