M-Z28

iTrader: (1)

Looking for some opinions on gmmg (madhammer) vs true duals.. Looking to add LT Headers, ORY and LS6 intake soon, but can't make my mind up on the exhaust!! I hate rasp so the gmmg would need a extra muffler in the I pipe. Would there be any difference in hp power gains?

Sound is everything to me so I want it to be wicked!!!
Future plans to a cam then heads on down the road.....

Let's here those exhaust set ups!!! GMMG or true duals.. we need details..

babbage1109

iTrader: (11)

My gmmg with a resonator in the I pipe It sounds great.

TORCHD 02 TA

iTrader: (39)

I've had both set ups..


See the set up that I have in my sig

M-Z28

iTrader: (1)

Maybe I'm wrong, but I'm sure I read sticky on your gmmg exhaust to eliminate rasp..

Sounded nasty!!! In the drag vids.. Was you running the cutout open while racing?

SSickLS1SS

i vote gmmg

M-Z28

iTrader: (1)

Car looks amazing!

In the first video what complete set up are you running? LT,ORY,Cats, Chambered muffler in I pipe?
Sounded awesome!!

murphinator

iTrader: (2)

exhaust note is subjective to personal tastes , my opinion is different than the majority of posts here.

I had a bolt on a4 car with pacesetter long tubes/ory/gmmg and it was the raspiest droning mess I have ever heard , sounded great when getting on it but as far as driving normally it was terrible.

MY 6 speed bolt on car has qtp long tubes to true duals dumped at the axle no drone sounds great at all times aggressive but in a good way.

I also have another bolt on a4 car kooks long tubes/ tsp ory/ magnaflow stainless catback sounds excellent no drone/rasp as well.

the gmmg car had 273's that may have contributed to my poor opinion of the gmmg , it was easy to get it to "lug" the other cars have 342&373 gears

scotty2000ss

iTrader: (2)

True duels = MORE POWER

camarodude87

iTrader: (8)

i hate my true duals, Drone is horrible. Im sure gmmg would be pretty noisy with a big cam. Im going to get a ORY and cats then GMMG catback

DeLaRosa25

iTrader: (10)

Wrong set up dual wise if the drone was that bad.

M-Z28

iTrader: (1)

During my research of the gmmg exhaust.. I've noticed that LT1 cars sound better than LS1 cars with gmmg.
Also Ls1 cars sound awesome stock with factory manifolds and cats, but insanely raspy with LT,ORY...
For a $650 system that has to modified with a extra muffler in the I pipe just to eliminate rasp, I'm think the best route would be true duals or stay factory with a cutout..
TPS rumbler mufflers suck... A$$
Any suggestions on a good chambered muffle for true duals?

Still wanting the opinions on gmmg just don't think it's the best route at the moment. Although as I'm typing this I'm changing my mind..LOL!! Picking an exhaust sucks

bob320fa

I went with pacesetter long tubes, GMMG, and Magnaflow cats to get rid of the rasp. 10 years and I'm still happy. Nice fairly loud rumble, you can still hold a conversation in the car, and it doesn't sound like an old truck. Nice and loud when you get on it.

camarodude87

iTrader: (8)

Think you could post a vid brother?

Tuskyz28

Kooks is the truth!! The futher away the car goes away from me in distance the louder and meaner sounding it gets.

M-Z28

iTrader: (1)

Kooks is crazy expensive and don't see any benifit over true duals. I have never heard one in person, and sound clips don't impress me either.....

M-Z28

iTrader: (1)

Post up vids guys let's hear those gmmg and true duals!!!! Please let us know your full set mufflers,cats, etc..

KingJacobo

In my experience, GMMG sounds awesome with stock manifolds and cats. Raspy and whatnot with longtubes and no cats.

I have true duals with cats. Setup is:
1 3/4 longtubes, 3'' xpipe, 3" cats, 3'' piping, 3'' moroso spiral flows, run out of tailpipes, under axle. Tone is awesome, volume is moderate, zero drone/rasp. Can have a conversation in the car just fine, just need to talk a little louder.

http://youtu.be/kYayde3PFQY

Tuskyz28

I paid 1200 shipped for my kooks true duals.....

M-Z28

iTrader: (1)

Now that is a nice set up.... Now you got me thinking!!
Question- Having the exhaust running under axle, what kind of issues does that cause?
For example: when jacking the car up wouldn't the rear end come down and damage or touch exhaust?

M-Z28

iTrader: (1)

I bet it sounds good!! Budgets are across the board and yours must be on the upper end..Congrats!!!!

I got a !!!!!!!!!