Answer my PM. We still on? I ain't gonna be pissed, just be up front with me. 
View Poll Results: GMMG or True Duals?
Keep my GMMG
49
54.44%
Sell GMMG, and get TRUE DUALS
41
45.56%
Voters: 90. You may not vote on this poll
GMMG vs True Duals
I just switched from true duals under the axle and out the back with magnaflow mufflers to a custom y pipe and slp dual dual. The true duals are very loud...even out the back. Having a stalled auto with a cam doesn't help though. I just got tired of the sound, and now I have the same flow (cutout) when I want it.....and a nice quiet sound when I don't.
.... I'll see if I can get a clip of it. 
Thread Starter
On The Tree
Joined: Sep 2007
Posts: 180
Likes: 0
I hear you man. All I am saying for the ones I have heard, thats the way it was. My TD's on the SS are loud as hell. But a buddy of mine has GMMG and I think his is louder do to a higher pitch... Mine is more throaty, kinda like a stang. Sounds sexy.... I'll see if I can get a clip of it.
.... I'll see if I can get a clip of it. I love my GMMG ... though the Y pipe i have is less than enjoyable, a quick change to the Y-pipe will basically kill any rasp I've got in the system. I'm likely going to be copying patrick g's Y idea, using a dr gas dual 3 into 4" y with a 4" cutout back into the 3" intermediate ...
as much as I love some duals and their sounds, I still fall in love with my GMMG every time I push the gas, and duals for me, unless done pretty much to my spec, would not be worth it, in my opinion, because I love the way the GMMG sounds over all else.
though I guess if you want to do Duals and quiet it down but have that kind of sound, run 4 16" chambers through the system... 2 after the X, and 2 out for tips.
just my few pennies
as much as I love some duals and their sounds, I still fall in love with my GMMG every time I push the gas, and duals for me, unless done pretty much to my spec, would not be worth it, in my opinion, because I love the way the GMMG sounds over all else.
though I guess if you want to do Duals and quiet it down but have that kind of sound, run 4 16" chambers through the system... 2 after the X, and 2 out for tips.
just my few pennies
some say they vibrate you to death but mine doesn't! My buddy has one on an a4 and his vibes a little at certain rpms but I'm sure he could loosen it up a half turn at a time. I think that'd work. My 6spd doesn't vibe one bit. I'd say getting one and loosening it is worth it.
I voted for selling it. I had a GMMG on my car and loved it, from stock manifolds to H/C/I. But fact of the matter is I only kept a catback for tips for my bumper cutouts on my Trans Am. If I would have had a Camaro or Formula, I wouldn't have got a GMMG and would have went TDs in a heartbeat. As it is I have sold my catted Y-pipe and had a pending sale on my GMMG and went with a X-pipe/ Spiral Flows for coin for a new clutch. Sell the GMMG for mod money if you need to.
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Joined: Nov 2003
Posts: 6,216
Likes: 236
From: Wichita KS / Rancho San Diego
It depends on if you run cats or not. GMMG is extremely loud and has horrible tone with ORY. For my tastes, though, true duals are also too loud. But they will sound better than GMMG/ORY. GMMG with cats makes for beautiful sound.
I just swapped out my TSP duals for a custom catted Y with electric cutout and GMMG CB. It is a huge difference in sound from inside the car. but with the cutout open and behind the car it sounds beautiful. Deep tones and No RASP.
If it was up to me I would stay with what you got, GMMG is a badass setup and sounds great. Duals are great as well but you got to worry about ground clearance and those pain cops that write tickets for dumped before axle. LOL (personal experience)
Sorry to disappoint you 
TECH Senior Member
iTrader: (1)
Joined: Apr 2005
Posts: 8,807
Likes: 0
From: Vancouver,[KITSILANO].B.C. Canada *WestCoast*
here are my duals with sweet thunders....
http://www.youtube.com/watch?v=e-dKkD70PkQ
i dont want it to sound any different......
http://www.youtube.com/watch?v=e-dKkD70PkQ
i dont want it to sound any different......
TECH Resident
Joined: Jul 2007
Posts: 749
Likes: 1
From: Spokane, WA
I'm gonna vote for duals over the axle with XR-1s if you don't want it extremely loud. I've never heard a catback that sounded better to me than a nice set of duals. For my setup I am going with Classic Chambered Exhaust's Powersticks, which are a chambered muffler kinda similar to a GMMG, but those are gonna be very loud.
Go with duals its worth it.
http://www.youtube.com/watch?v=A7D1XXTETnI
http://www.youtube.com/watch?v=DWWu0hEyGH4
http://www.youtube.com/watch?v=A7D1XXTETnI
http://www.youtube.com/watch?v=DWWu0hEyGH4
Go with duals its worth it.
http://www.youtube.com/watch?v=A7D1XXTETnI
http://www.youtube.com/watch?v=DWWu0hEyGH4
http://www.youtube.com/watch?v=A7D1XXTETnI
http://www.youtube.com/watch?v=DWWu0hEyGH4