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

Long Tube Header cat location

Thread Tools
 
Search this Thread
 
Old Aug 6, 2010 | 02:28 PM
  #1  
bandit-00's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Jun 2006
Posts: 71
Likes: 0
From: Clarksburg, West Virginia
Default Long Tube Header cat location

While shopping for catted Y pipes, I have noticed some of more expensive brands like Kooks or American locate the cats right behind the collector, while other more affordable brands like TSP and LPP locate the drivers side cat in the bend.

I would perfer the cats be located directly behind the collector. I have to pass a visiual emissions and it seams they would let that fly before the TSP style. Plus I think it looks better.

Now, I was thinking instead of paying the $550 some dollars for the Kooks pipe I could get one custom fabbed up by a local shop with some magnaflow cats and a flowmaster Y.

I guess my question is, How does Kooks get away with locating the cats behind the collectors while so many other brands have them after the bend. I assume it is a space restriction but can't tell for sure yet because I have not installed headers and am not sure exactly where the collector will locate. I am only going from pictures. Anyone have any undercarriage shots with the cats located directly behind the header?
Reply
Old Aug 8, 2010 | 01:43 PM
  #2  
bandit-00's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Jun 2006
Posts: 71
Likes: 0
From: Clarksburg, West Virginia
Default

OK, does anyone has any experiance with the Kooks catted Y pipe. How is the fitment and ground clearance.
Reply
Old Aug 8, 2010 | 03:57 PM
  #3  
toothdoc's Avatar
Launching!
iTrader: (7)
 
Joined: Aug 2005
Posts: 278
Likes: 0
From: Chicagoland
Default

ARH catted Y-pipe here. Tons of ground clearance.
Reply
Old Aug 8, 2010 | 07:00 PM
  #4  
SOMbitch's Avatar
TECH Senior Member
iTrader: (8)
 
Joined: Sep 2007
Posts: 6,881
Likes: 3
Default

ARH has the best Y for these cars IMO.....
Reply
Old Aug 10, 2010 | 06:56 PM
  #5  
Chrismikeb's Avatar
TECH Apprentice
iTrader: (2)
 
Joined: Sep 2009
Posts: 325
Likes: 0
From: Houston, Tx
Default

i had lpp lts and ory, i had magnaflow cats put on it cuz it was just to loud for my taste...i just cut out the ends of the y that go up to the collectors and welded them to the y, mines 3in exhaust i dont know how its even possible to put it in the bend because that section is flattened out to give u more ground clearence...seems to me itd be pretty stupid to put a big round cat in the middle of that

but anyway i have not had any problems other than the fact my uncle cant weld..
Reply
Old Aug 10, 2010 | 09:09 PM
  #6  
senicalj4579's Avatar
10 Second Club
20 Year Member
Liked
Loved
Community Favorite
iTrader: (41)
 
Joined: Jan 2006
Posts: 5,260
Likes: 24
Default

If you have to have a visual and they do their job correctly then you will not pass no matter what y pipe you go with unless its stock. You need to find a place where they dont give a **** lol
Reply
Old Aug 14, 2010 | 12:27 PM
  #7  
bandit-00's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Jun 2006
Posts: 71
Likes: 0
From: Clarksburg, West Virginia
Default

Originally Posted by Chrismikeb
i had lpp lts and ory, i had magnaflow cats put on it cuz it was just to loud for my taste...i just cut out the ends of the y that go up to the collectors and welded them to the y, mines 3in exhaust i dont know how its even possible to put it in the bend because that section is flattened out to give u more ground clearence...seems to me itd be pretty stupid to put a big round cat in the middle of that

but anyway i have not had any problems other than the fact my uncle cant weld..
So there were no clearance problems with the cats there?

Originally Posted by senicalj4579
If you have to have a visual and they do their job correctly then you will not pass no matter what y pipe you go with unless its stock. You need to find a place where they dont give a **** lol
It's a visual, but very lax, if they see cats under there most will probably sign it off. I always get my car inspected at the same place and they usually don't even look, but they may if it suddenly gets way louder.
Reply
Old Aug 14, 2010 | 12:33 PM
  #8  
bandit-00's Avatar
Thread Starter
Staging Lane
iTrader: (2)
 
Joined: Jun 2006
Posts: 71
Likes: 0
From: Clarksburg, West Virginia
Default

Here is a QTP pipe with the cat after the bend. This is what I don't want

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 Aug 15, 2010 | 01:29 PM
  #9  
libertyforall1776's Avatar
TECH Addict
15 Year Member
iTrader: (2)
 
Joined: May 2007
Posts: 2,129
Likes: 5
From: IL
Default

I am not sure after reading this:
https://ls1tech.com/forums/7248595-post9.html

Originally Posted by SOMbitch
ARH has the best Y for these cars IMO.....
Reply
Old Aug 15, 2010 | 01:31 PM
  #10  
libertyforall1776's Avatar
TECH Addict
15 Year Member
iTrader: (2)
 
Joined: May 2007
Posts: 2,129
Likes: 5
From: IL
Default

Or just vote with your feet and MOVE!

Originally Posted by senicalj4579
If you have to have a visual and they do their job correctly then you will not pass no matter what y pipe you go with unless its stock. You need to find a place where they dont give a **** lol
Reply
Old Aug 20, 2010 | 12:18 AM
  #11  
mondols1's Avatar
On The Tree
15 Year Member
iTrader: (2)
 
Joined: Oct 2007
Posts: 140
Likes: 1
From: Seabrook, TX
Default

i welded a set of the 3" thunder cats onto my off road y. i put one right at the collecter and one in the bend, it passed inspection. also, it did get rid of the rasp
Reply
Old Aug 20, 2010 | 03:21 PM
  #12  
matt224's Avatar
On The Tree
 
Joined: Jun 2010
Posts: 138
Likes: 0
Default

The BBK headers use the stock location I believe, as the headers and Y pipe bolt right up to stock cats.
Reply




All times are GMT -5. The time now is 12:23 AM.

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