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

Cmmg Cat Back

Thread Tools
 
Search this Thread
 
Old Dec 31, 2006 | 11:42 AM
  #1  
omcar's Avatar
Thread Starter
TECH Fanatic
iTrader: (10)
 
Joined: Jun 2006
Posts: 1,333
Likes: 0
From: Pennsylvania
Default Cmmg Cat Back

Who has one and do you like it? I currently have a Magnaflow. Is it worth changing to the CMMG for addtional power?
Reply
Old Dec 31, 2006 | 11:59 AM
  #2  
SMOKNSS's Avatar
11 Second Club
15 Year Member
iTrader: (3)
 
Joined: Dec 2006
Posts: 879
Likes: 0
From: Alabama
Default

I have the GMMG catback and I LOVE IT!!!! Never heard the magnaflow in person though.
Reply
Old Dec 31, 2006 | 12:03 PM
  #3  
GR33N GoblinM6's Avatar
TECH Addict
iTrader: (14)
 
Joined: Jan 2005
Posts: 2,301
Likes: 1
From: Utah
Default

GMMG.. not CMMC
Reply
Old Dec 31, 2006 | 12:08 PM
  #4  
KEE AUDIO's Avatar
Banned
iTrader: (65)
 
Joined: Sep 2004
Posts: 2,851
Likes: 2
From: Marietta, GA
Default

Go to LS1 sounds and listen for yourself!! I love mine. I also have had a Slowmaster that sounded fine but was very restrictive. Then I had the SLP Loudmouth which I still like. Actually made my smaller cam sound alot meaner than my GMMG. The GMMG quieted things down a small amount but got rid of some of the rasp I had. Made my cam sound as small as it is. I like em both.
Reply
Old Dec 31, 2006 | 03:53 PM
  #5  
STRETCH'S T/A's Avatar
11 Second Club
iTrader: (13)
 
Joined: Jun 2005
Posts: 1,332
Likes: 0
From: Lisle, IL
Default

if money isn't an issue, then yeah get the GMMG, system sounds great on stock manifolds and then even better with longtubes.
Reply
Old Dec 31, 2006 | 05:02 PM
  #6  
Demon Of Dreams's Avatar
TECH Enthusiast
iTrader: (3)
 
Joined: Mar 2006
Posts: 714
Likes: 0
From: Houston...
Default

better jump on the price before it goes back up again. Group Purchase forum .... $600 for GMMG? easilly justified to anyone :o
Reply
Old Dec 31, 2006 | 05:57 PM
  #7  
Arachnotron's Avatar
TECH Fanatic
 
Joined: Jan 2004
Posts: 1,310
Likes: 0
From: Friendswood, TX
Default

I bought mine on a past group purchase. Definitely worth it.
Reply
Old Dec 31, 2006 | 07:51 PM
  #8  
Revelation Z28's Avatar
TECH Veteran
iTrader: (10)
 
Joined: Jul 2006
Posts: 4,770
Likes: 0
From: Rialto CA
Default

im waiting until i have a spare $600 when the next GP happens.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

 Michael S. Palmer
story-1

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-2

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-3

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-4

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-5

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-6

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-7

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-8

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-9

Top 10 Most Powerful Chevy Trucks Ever Made!

 
Old Jan 1, 2007 | 01:45 AM
  #9  
HAMRHEAD's Avatar
10 Second Club
iTrader: (8)
 
Joined: Feb 2004
Posts: 2,846
Likes: 0
From: Milwaukee, WI
Default

GMMG's have a mean sound and IMO are the best catback
Reply
Old Jan 1, 2007 | 02:01 AM
  #10  
INMY01TA's Avatar
11 Second Club
20 Year Member
iTrader: (1)
 
Joined: Apr 2003
Posts: 3,235
Likes: 2
From: Crofton Md.
Default

I wouldn't waste your money. Magniflow is great. I've heard GMMG with manifolds + cats and it was extremely quiet. Not much if any Hp gain either to be had either.
Reply
Old Jan 1, 2007 | 02:59 AM
  #11  
orangeapeel's Avatar
ЯєŧąяĐ Єl¡m¡иąŧøя ™
iTrader: (18)
 
Joined: Nov 2004
Posts: 16,083
Likes: 4
From: Justin, TX
Default

Wish I could get one.
Reply
Old Jan 1, 2007 | 03:14 AM
  #12  
Chris95Z's Avatar
TECH Regular
iTrader: (3)
 
Joined: Mar 2005
Posts: 459
Likes: 0
From: San Marcos, CA
Default

magnaflow sounded too quiet for me but it had a nice tone. i like noise and thats why gmmg got my business. The tips don't look great by comparison to others that are out there, but they work. The build quality of the system is topnotch.
Reply
Old Jan 1, 2007 | 03:26 AM
  #13  
SweeTbone's Avatar
11 Second Club
20 Year Member
iTrader: (8)
 
Joined: Feb 2005
Posts: 2,545
Likes: 7
From: Toledo, OH
Default

Originally Posted by STRETCH'S T/A
if money isn't an issue, then yeah get the GMMG, system sounds great on stock manifolds and then even better with longtubes.
Originally Posted by Arachnotron
I bought mine on a past group purchase. Definitely worth it.
&
Reply
Old Jan 1, 2007 | 12:01 PM
  #14  
Magnet's Avatar
11 Second Club
20 Year Member
iTrader: (36)
 
Joined: Sep 2004
Posts: 4,085
Likes: 77
From: Fort Myers Florida
Default

my GMMG is too loud for me, and i like loud cars, of course i do have LT's with ORY, but i don't want to go catted, want the extra 3 hp

Someone PM and we will see what we can do in way of trade+ cash for my GMMG
Reply
Old Jan 1, 2007 | 12:13 PM
  #15  
BitViper's Avatar
TECH Addict
iTrader: (63)
 
Joined: Dec 2004
Posts: 2,343
Likes: 2
From: Sandy Ego, Ca.
Default

Originally Posted by Magnet
my GMMG is too loud for me, and i like loud cars, of course i do have LT's with ORY, but i don't want to go catted, want the extra 3 hp

Someone PM and we will see what we can do in way of trade+ cash for my GMMG

Ive been listening to a lot of exausts lately..and its really dissapointing how many cars sound like big honking trucks rather than cars...

I love my dual dual and Im going to miss it when I move to my TD system in two weeks....

To my ears....in terms of quality sound...a full 5X6X24 muffler is the way to go and of those "Full sized mfflers" My ranking for quality sound not out right noise from best to Ok

Dual Dual
Bassani
Dymomax Ultra Flows
And Sometimes Magnaflow depending on your set up
Reply
Old Jan 1, 2007 | 01:38 PM
  #16  
Magnet's Avatar
11 Second Club
20 Year Member
iTrader: (36)
 
Joined: Sep 2004
Posts: 4,085
Likes: 77
From: Fort Myers Florida
Default

the gmmg sounds really good at WOT but its too loud, and at part throttle i think its almost as loud as full throttle in my A4, so it gets annoying, i think a hooker or magnaflow is in my future...
Reply
Old Jan 1, 2007 | 04:32 PM
  #17  
lsx24's Avatar
Banned
iTrader: (45)
 
Joined: Aug 2003
Posts: 2,556
Likes: 0
From: NC
Default

GMMGs are way overpriced, Magnaflow is a much better value, stainless steel, and sounds more refined, not as loud. There's not going to be much of a power difference.
Reply




All times are GMT -5. The time now is 12:35 PM.

story-0
10 Reasons Daily Driving a Swap Project SUCKS! (& 1 Reason to Do It Anyway)

Slideshow: 10 reasons daily-driving a swap project might not be for you. Or is it?

By Michael S. Palmer | 2026-06-17 09:39:05


VIEW MORE
story-1
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-09 14:55:56


VIEW MORE
story-2
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-06-18 10:26:23


VIEW MORE
story-3
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-4
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-5
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-6
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-7
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-8
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-9
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE