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

Best cat back exhaust system

Thread Tools
 
Search this Thread
 
Old Feb 9, 2007 | 11:55 AM
  #1  
ddcook07's Avatar
Thread Starter
TECH Regular
iTrader: (5)
 
Joined: Jan 2007
Posts: 453
Likes: 0
From: New Orleans, La.
Default Best cat back exhaust system

Who has the best cat back system as far as performance gains go. I have stock headers and I just bought an SLP Y-pipe.
Reply
Old Feb 9, 2007 | 11:38 PM
  #2  
mike#9's Avatar
TECH Fanatic
iTrader: (3)
 
Joined: Sep 2002
Posts: 1,197
Likes: 0
From: Apopka, Fl
Default

You will never come to any conclusion about this. Not that you cannot find the best...but if you ask people..........they will probably tell you what they have.

Best performance...would have to be the original SLP loudmouth, and close second...probably GMMG. With you stock exhaust manifolds and the SLP y-pipe, the Loudmouth will sound great and flows the best. It has the straightest of the straight through designs. It is affordable too.
Reply
Old Feb 10, 2007 | 07:41 AM
  #3  
Red99TA's Avatar
TECH Addict
20 Year Member
iTrader: (11)
 
Joined: Oct 2003
Posts: 2,442
Likes: 6
From: Topeka, KS
Default

Magnaflow has a straight through design as well
Reply
Old Feb 10, 2007 | 08:40 AM
  #4  
00T\A's Avatar
TECH Fanatic
 
Joined: Oct 2002
Posts: 1,286
Likes: 0
From: NW Houston,TX
Default

Borla has wide open if you want
But sounds like ***
Reply
Old Feb 10, 2007 | 09:32 AM
  #5  
Scoggin Dickey's Avatar
LS1TECH & Trucks Sponsor
20 Year Member
Photogenic
iTrader: (34)
 
Joined: Mar 2002
Posts: 3,523
Likes: 35
From: Lubbock, TX
Default

For a comprimise between sound and performance, I really like the Hooker catbacks! They have a nice sound without that aluminum can sound, and flow better than say a Flowmaster. We keep them on the shelf for $329.95! They ship the same you order in most cases also!
__________________

800-456-0211 / PM / Facebook
WHIPPLE Superchargers, Procharger, Magnuson, Powerbond Sale, HPTuners packages!, Trickflow, AFR, PRC, CHE Trunion upgrade, $100 7.400" pushrod set, Custom Cam of your choice


Reply
Old Feb 10, 2007 | 02:20 PM
  #6  
01transamws6's Avatar
Staging Lane
 
Joined: May 2006
Posts: 52
Likes: 0
From: west milton, ohio
Default

i just bought slp longtube headers and loudmouth exhaust. it's going on tonight. the car i heard it on sounded great. i'm recomending the slp longtube headers and the slp loudmouth exhaust. it is expensive, but worth it.
Reply
Old Feb 10, 2007 | 04:15 PM
  #7  
chrs1313's Avatar
10 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (24)
 
Joined: Feb 2005
Posts: 5,703
Likes: 13
Default

performance get a cutout in the y...if you want sound get a catback...
Reply
Old Feb 10, 2007 | 04:21 PM
  #8  
dpw41285's Avatar
TECH Resident
iTrader: (26)
 
Joined: Apr 2006
Posts: 969
Likes: 0
From: Ft Wayne, IN
Default

uhh duplicate thread https://ls1tech.com/forums/generation-iii-external-engine/655940-best-cat-back-exhaust-system.html
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Feb 10, 2007 | 04:22 PM
  #9  
dpw41285's Avatar
TECH Resident
iTrader: (26)
 
Joined: Apr 2006
Posts: 969
Likes: 0
From: Ft Wayne, IN
Default

it doesnt matter...your running stock headers and a slp y pipe/there goes all your power anyway. most cat backs are with in a hp or 3 of eachother go to ls1sounds.com and pick out which one sounds the best to you. i will let you in on a secret flowmaster flows like ****. what was wrong with your the other replys in your other thread where you said exactly the same thing?? didnt get the answers you wanted!
Reply
Old Feb 10, 2007 | 06:08 PM
  #10  
delsold's Avatar
TECH Enthusiast
iTrader: (7)
 
Joined: Jul 2006
Posts: 623
Likes: 0
From: Fenway
Default

Originally Posted by dpw41285
it doesnt matter...your running stock headers and a slp y pipe/there goes all your power anyway. most cat backs are with in a hp or 3 of eachother go to ls1sounds.com and pick out which one sounds the best to you. i will let you in on a secret flowmaster flows like ****. what was wrong with your the other replys in your other thread where you said exactly the same thing?? didnt get the answers you wanted!

ya i doubt you will see any bigger performance gains with any one company over the next. until the manifolds get changed out catbacks are mostly gonna get you sound. as far as that goes the original slp loudmouth I sounds pretty sick IMO.
Reply
Old Feb 10, 2007 | 07:38 PM
  #11  
onebadZ28's Avatar
On The Tree
 
Joined: Aug 2006
Posts: 155
Likes: 0
Default

go with magnaflow. I did, and wouldn't change a thing
Attached Thumbnails Best cat back exhaust system-000_0432.jpg  
Reply




All times are GMT -5. The time now is 09:13 PM.

story-0
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-1
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-2
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-3
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-4
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
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE