Gmmg vs. Speed Engineering True Duals vs. Texas Speed True Duals
10-25-2017, 01:49 PM
#1
On The Tree
Thread Starter
Gmmg vs. Speed Engineering True Duals vs. Texas Speed True Duals So I've been itching to change my current exhaust setup (Arh headers and catted y with a gmmg out the back) I love the sound. Very loud but not obnoxious even with a cam. But I have been tempted to switch to a catless true dual over the axle setup. I don't want my car to be any quieter and if it's louder that's not a problem.
So if you were me would you keep what I got, or switch? And if I did switch which one is preferred/would fit with my headers?
So if you were me would you keep what I got, or switch? And if I did switch which one is preferred/would fit with my headers?
10-25-2017, 03:16 PM
#5
How would adding a cut out before the rear axle near the rear passenger's seat would be for a cost effective change? It will add some noise and with the catt'ed Y pipe not be too excessive with noise. If you don't like the sound just cap the cut out.
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10-25-2017, 10:32 PM
#10
FYI - Texas speed & speed duals are very similar whether be dumped at axle or over axle. Also both companies built the current kits for stock height cars.
unless you are planning to lower with coilovers, the premade kits from speed or Texas will have poor ground clearance .
kooks although comes at a price , will work on low cars.
If ground clearance is an absolute concern then, gmmg.
if doing coil over or regular low car springs isn't concern then either of new dual kits mentioned above is fine.
Exception to this for affordable duals kit is hooker black heart true duals . Although not on your list and exhaust pipe size is stock fbody size (2.5") and is cheaper than looks.
If none of that works, mufflex single 4".
unless you are planning to lower with coilovers, the premade kits from speed or Texas will have poor ground clearance .
kooks although comes at a price , will work on low cars.
If ground clearance is an absolute concern then, gmmg.
if doing coil over or regular low car springs isn't concern then either of new dual kits mentioned above is fine.
Exception to this for affordable duals kit is hooker black heart true duals . Although not on your list and exhaust pipe size is stock fbody size (2.5") and is cheaper than looks.
If none of that works, mufflex single 4".
10-26-2017, 12:58 PM
#13
On The Tree
Thread Starter
I also should mention that I plan on running a 2 step, and I know cats will not last long with that. So basically I figure now would be the time to switch to something new. Basically there is nothing wrong with what I got now, it was more just along the lines if switching to duals would be worth it. Also currently I am stock height soon to be on coilovers, and I wouldn't have a problem adjusting the exhaust to get it to tuck up and fit better.
10-26-2017, 06:44 PM
#16
TECH Senior Member
Sounds good! Nice looking ride too, BTW. Doesn't lope as much as I thought it would considering the cam you have. But then you DO know how to tune correctly...
10-28-2017, 04:16 PM
#18
If you have a mostly stock car, the Speed Eng clones of the Kooks system is going to be hard to beat. It'll sound good and have pretty good clearance.
If you modify the car pretty extensively, it's going to be loud. Very loud. Those bullets don't do jack to help. The TSP system is even worse since it dumps. That leaves a catted setup with the GMMG as a good alternative... or the TSP Catback with the built-in cutout.
That's what I'm planning to do on the turbo car I'm building to have a very nice cruiser... then open the cutout when I need to release some backpressure...
If you modify the car pretty extensively, it's going to be loud. Very loud. Those bullets don't do jack to help. The TSP system is even worse since it dumps. That leaves a catted setup with the GMMG as a good alternative... or the TSP Catback with the built-in cutout.
That's what I'm planning to do on the turbo car I'm building to have a very nice cruiser... then open the cutout when I need to release some backpressure...
10-28-2017, 09:01 PM
#19
On The Tree
Thread Starter
Well I have ported 241s and a si5 cam so I could see it being pretty loud. However that doesn't bother me since I'm still young and still like very loud cars 
11-06-2017, 08:25 PM
#20
If you don't care how loud it is I would go with the Speed engineering duals. You didn't mention being low but others did. Several people worked with it and got it tucked up nicely. Which you will have to do with any exhaust kit.
For the price you could add whatever mufflers you wan't to get it to sound the way you like and still save a ton of money, IF you want to change it at all. And there aren't many exhaust systems that can out do a true dual 3". I'd like to see the motor that is choked by that exhuast.. Most of us will never own a motor that will need more than that.
For the price you could add whatever mufflers you wan't to get it to sound the way you like and still save a ton of money, IF you want to change it at all. And there aren't many exhaust systems that can out do a true dual 3". I'd like to see the motor that is choked by that exhuast.. Most of us will never own a motor that will need more than that.