Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

GMMG or Duals??

Thread Tools
 
Search this Thread
 
Old 03-27-2004, 08:47 PM
  #1  
TECH Resident
Thread Starter
 
1BADFNZ's Avatar
 
Join Date: Jan 2004
Location: Charleston SC
Posts: 882
Likes: 0
Received 0 Likes on 0 Posts
Default GMMG or Duals??

I've been doing a lot of searching and reading and reading some more and I've narrowed down my exhaust to two options:

1) QTP LT, QTP ORY, GMMG
2)QTP LT, True Duals.

I like option 1 because I've heard nothing absolutely nothing bad about GMMG other than $$$. This is a daily driven car and I'm willing so sacrifice 5hp or so for the reliability and ease of ownership of a GMMG Catback.

Option 2 I was considering but I'd want the duals in stainless and that adds up real quick. I've also read a lot of people having to adjust, or keep switching out mufflers and such to find a combination that isn't too loud. I want it to be loud at WOT and for it to have a nice sounding idle but at cruise speeds < 2000rpm i don't want to have it droning and making life miserable inside the car.

So the question is which setup will suit my needs better?? The GMMG catback or true duals. I'm not a hardcore racer but still like a fast mean sounding car that will impress people.

Thanks.
Old 03-27-2004, 11:00 PM
  #2  
Launching!
 
2002SS#1811's Avatar
 
Join Date: Mar 2004
Location: SUGAR GROVE TOWNSHIP ILLINOIS
Posts: 266
Likes: 0
Received 0 Likes on 0 Posts

Default

If you go with the GMMG I would run cats with it to keep the rasp down. If that kinda thing bothers you. Why would you sacrifice HP with a GMMG, I understand it flows very well over stock and just about anything but duals? Anyway, you couldn't go wrong each way. I am also getting rid of my Corsa to get a GMMG + LT W/ Cats.
Old 03-27-2004, 11:07 PM
  #3  
TECH Apprentice
 
1STGEN68-2000SS's Avatar
 
Join Date: Dec 2003
Location: Houston
Posts: 342
Likes: 0
Received 0 Likes on 0 Posts
Default

I love my gmmg with long tube headers and cats and it is exactly what you are looking for. They did a test with a cut-out open on a dyno and then gmmg on a dyno and i think they onjly lost like 1 or 2 horsepower by closing the cut-out and going with gmmg. It flows very well and sounds awesome
Old 03-27-2004, 11:09 PM
  #4  
10 Second Club
iTrader: (2)
 
wild thing's Avatar
 
Join Date: Aug 2003
Location: Houston,Texas/College Station
Posts: 1,744
Likes: 0
Received 0 Likes on 0 Posts

Default

That was me typing at 1stgen on the above post i was accidently on my dads username
Old 03-27-2004, 11:39 PM
  #5  
TECH Resident
Thread Starter
 
1BADFNZ's Avatar
 
Join Date: Jan 2004
Location: Charleston SC
Posts: 882
Likes: 0
Received 0 Likes on 0 Posts
Default

Well how bad is it without cats?? I live in SC and there's no inspection crap so I could run straight ory. The QTP y pipe comes with carsound cats, how much if any does that hurt performance?? I'm not totally sure what rasp sounds like other than it's bad LOL

Thanks.
Old 03-27-2004, 11:41 PM
  #6  
TECH Senior Member
iTrader: (33)
 
WS6FirebirdTA00's Avatar
 
Join Date: Mar 2003
Location: North Carolina
Posts: 8,318
Likes: 0
Received 1 Like on 1 Post

Default

ive got a clip of it email me, its a fly by with long tubes, ory and gmmg. screw cats that rasp sounds mean and its loud!
Old 03-27-2004, 11:41 PM
  #7  
TECH Senior Member
iTrader: (33)
 
WS6FirebirdTA00's Avatar
 
Join Date: Mar 2003
Location: North Carolina
Posts: 8,318
Likes: 0
Received 1 Like on 1 Post

Default

o yeah email is budchevy358@yahoo.com
Old 03-27-2004, 11:43 PM
  #8  
TECH Resident
Thread Starter
 
1BADFNZ's Avatar
 
Join Date: Jan 2004
Location: Charleston SC
Posts: 882
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by WS6FirebirdTA00
o yeah email is budchevy358@yahoo.com
You've got PM
Old 03-28-2004, 01:25 AM
  #9  
On The Tree
 
Trans_AmGuy's Avatar
 
Join Date: Apr 2003
Location:
Posts: 174
Likes: 0
Received 0 Likes on 0 Posts
Default

I have GMMG with Jet Hots and ORY and the rasp isnt bad at all. Its just as loud as my previous true dual set up.
Old 03-28-2004, 01:51 AM
  #10  
TECH Fanatic
iTrader: (2)
 
FAST LS1's Avatar
 
Join Date: Jun 2002
Location: Athens TN
Posts: 1,057
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Trans_AmGuy
I have GMMG with Jet Hots and ORY and the rasp isnt bad at all. Its just as loud as my previous true dual set up.
If you get an ORY-pipe I wouldn't get the GMMG, it will be raspy.
With $700 I'm sure you could get a nice set of stainless duals with stainless Borla Pro XS mufflers or Magnaflow mufflers.
Old 03-28-2004, 01:52 AM
  #11  
On The Tree
 
Trans_AmGuy's Avatar
 
Join Date: Apr 2003
Location:
Posts: 174
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by FAST LS1
If you get an ORY-pipe I wouldn't get the GMMG, it will be raspy.
With $700 I'm sure you could get a nice set of stainless duals with stainless Borla Pro XS mufflers or Magnaflow mufflers.
I HAVE an ORY and its NOT very raspy at all!
Old 03-28-2004, 01:55 AM
  #12  
TECH Fanatic
iTrader: (2)
 
FAST LS1's Avatar
 
Join Date: Jun 2002
Location: Athens TN
Posts: 1,057
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Trans_AmGuy
I HAVE an ORY and its NOT very raspy at all!
I'd consider any rasp after spending $700 on a GMMG exhaust dissapointing.
Old 03-28-2004, 01:58 AM
  #13  
On The Tree
 
Trans_AmGuy's Avatar
 
Join Date: Apr 2003
Location:
Posts: 174
Likes: 0
Received 0 Likes on 0 Posts
Default

Its only at ~2K RPM's and its very very tolorable.
Old 03-28-2004, 02:07 AM
  #14  
TECH Fanatic
iTrader: (2)
 
FAST LS1's Avatar
 
Join Date: Jun 2002
Location: Athens TN
Posts: 1,057
Likes: 0
Received 0 Likes on 0 Posts

Default

Originally Posted by Trans_AmGuy
Its only at ~2K RPM's and its very very tolorable.
I've lived with the rasp also, and it's tolerable for a while. I just couldn't see throwing down that kind of money for an exhaust I knew would be raspy when I could get something else that makes more power, doesn't rasp, and is cheaper.
Old 03-28-2004, 08:23 AM
  #15  
TECH Senior Member
iTrader: (33)
 
WS6FirebirdTA00's Avatar
 
Join Date: Mar 2003
Location: North Carolina
Posts: 8,318
Likes: 0
Received 1 Like on 1 Post

Default

i dont know but everyone i talk to is like me they think that a little rasp it good, sounds meaner




All times are GMT -5. The time now is 07:22 PM.