C5 Tech Corvette Tech/Performance: LS1 Corvette Technical Info, Internal Engine, External Engine, Tech Topics, Basic Tech, Maintenance, How to Remove & Replace
Sponsored by:
Sponsored by:

Anyone have any experience with high-flow CATS??

Thread Tools
 
Search this Thread
 
Old Nov 28, 2001 | 05:34 PM
  #1  
JWSchmidt3's Avatar
JWSchmidt3
Thread Starter
Race Director
 
Joined: Sep 2000
Posts: 11,309
Likes: 0
From: Valley Ranch, Texas
Default Anyone have any experience with high-flow CATS??

I'm considering high-flow CATS, and was curious if anyone has any experience or suggestions (preferably with H/C cars). Advantages?? Disadvantages?? $$$?? Brands?? Etc... Thanks. :cheers:
Reply
Old Nov 28, 2001 | 05:42 PM
  #2  
Nilla Ice's Avatar
Nilla Ice
Safety Car
 
Joined: Feb 2000
Posts: 3,635
Likes: 0
From: houston Texas
Default Re: Anyone have any experience with high-flow CATS?? (JWSchmidt3)

I'm considering high-flow CATS, and was curious if anyone has any experience or suggestions (preferably with H/C cars). Advantages?? Disadvantages?? $$$?? Brands?? Etc... Thanks. :cheers:
MorFlow makes a good product. They have three different sizes that I know of... 2.25, 2.5, 3 inch inlet exhaust piping. Drawbacks? None... Advantages? More flow and environment friendly. I passed easily with a single cat on a cammed car, so with the dual cat of the C5 emissions would probably be even less.

Tony
Reply
Old Nov 28, 2001 | 06:29 PM
  #3  
SPEED DOG's Avatar
SPEED DOG
Racer
 
Joined: Sep 2000
Posts: 487
Likes: 0
From: Below the Mason/Dixon Line Alabama
Default Re: Anyone have any experience with high-flow CATS?? (JWSchmidt3)

As you can see from my sig, I've got C&L High Flows on my ARE setup. I had run straight pipes until I decided which of the high flow systems to use. I found the cat-free setup a bit loud, and the car felt a little "hollow" at low RPM's (mind, I'm running an aggressive cam and heads optimized for high lift/high rpm flow). The C&L's quieted things just enough to improve livability, and restored a sense of "fullness" at low rpm, without detracting from WOT performance.

C&L cats have high flow rates, and the company is willing to make a variety of custom pipe diameters and sizes (which I needed). They are also local to me, a plus. The cats were easy to install, and needed no sign. modification to the rest of my plumbing (TTS LT's; Corsa X pipe, Corsa Indy).

You can easily find C&L on the web.

Hope this helps.
Reply
Old Nov 28, 2001 | 07:00 PM
  #4  
JWSchmidt3's Avatar
JWSchmidt3
Thread Starter
Race Director
 
Joined: Sep 2000
Posts: 11,309
Likes: 0
From: Valley Ranch, Texas
Default Re: Anyone have any experience with high-flow CATS?? (SPEED DOG)

$$$$$$$$$??? What are we talking cost wise??
Reply
Old Nov 28, 2001 | 07:27 PM
  #5  
Nilla Ice's Avatar
Nilla Ice
Safety Car
 
Joined: Feb 2000
Posts: 3,635
Likes: 0
From: houston Texas
Default Re: Anyone have any experience with high-flow CATS?? (JWSchmidt3)

It's like 79, 89, 99 for the different sizes for the MorFlow cats. Your Tuner knows who to call.
Reply
Old Nov 28, 2001 | 07:37 PM
  #6  
SilverStar's Avatar
SilverStar
Burning Brakes
10 Year Member
 
Joined: Feb 2000
Posts: 1,247
Likes: 0
From: Denver CO
Default Re: Anyone have any experience with high-flow CATS?? (Nilla Ice)

I have the Random Technology 3" barrel high flow cats. Random makes the Cadillac of high flow cats; they have the highest flow ratings.

I do not have dyno numbers, this is just my opinion, but any gains were minimal. They make the exhaust sound ever so slightly deeper (which I like).

General consensus has been that it is not worth the money, even for a h/c car like mine. May be more necessary for a larger displacement.

Cost was about $125/cat (not sure, I got a deal from a forum member). The 3" cats fit easily. Others may or may not depending on what long tubes you run; space is at a premium down there. Install was about 150. The cats have 3" pipe so there is a lot of welding to transition from 2 1/2 to 3 then 3 to 2 1/2.
Reply
Old Nov 28, 2001 | 08:18 PM
  #7  
Chris@SD's Avatar
Chris@SD
Safety Car
 
Joined: Nov 1999
Posts: 3,891
Likes: 2
From: Houston, TX
Default Re: Anyone have any experience with high-flow CATS?? (JWSchmidt3)

Car sound is another good company and makes a great flowing cat. You are looking at around $100 a piece.
I am looking forward to seeing how your setup turns out JW. It sounds like you are pulling out all the stops! :)
Reply
Old Nov 28, 2001 | 09:19 PM
  #8  
MelloYellow's Avatar
MelloYellow
Le Mans Master
 
Joined: Apr 2000
Posts: 7,248
Likes: 0
Default Re: Anyone have any experience with high-flow CATS?? (2FST4U)

C&L $89ea 2.5" SD's.

They will far outflow your cat-back mufflers.
You should pick up 5-10 rwtq.
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

 Michael S. Palmer
story-1

5 Best & 5 Worst Corvette Daily Drivers

 Joe Kucinski
story-2

The Headlights of Every Corvette Generation Explained

 Joe Kucinski
story-3

5 Best & 5 Most Overrated Corvette Track Packages of All Time!

 Joe Kucinski
story-4

Every 2027 Corvette Engine Explained

 Joe Kucinski
story-5

Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

 Verdad Gallardo
story-6

10 Ugly Corvettes That We Still Kinda Love

 Joe Kucinski
story-7

Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

 Brett Foote
story-8

10 Things Every Corvette Owner Needs (2026 Edition)

 Michael S. Palmer
story-9

8 Most "Only Corvette Owners Understand" Quirks and Problems

 Pouria Savadkouei
Old Nov 29, 2001 | 12:45 AM
  #9  
Nilla Ice's Avatar
Nilla Ice
Safety Car
 
Joined: Feb 2000
Posts: 3,635
Likes: 0
From: houston Texas
Default Re: Anyone have any experience with high-flow CATS??

Someone correct me if I'm wrong, but I have heard that there are only 3 catalytic makers in the world.

Reply
Old Nov 29, 2001 | 12:05 PM
  #10  
carpe dm's Avatar
carpe dm
Le Mans Master
15 Year Member
 
Joined: Oct 1999
Posts: 8,205
Likes: 40
From: Tucson AZ
Default Re: Anyone have any experience with high-flow CATS?? (JWSchmidt3)

How do we get in touch with C&L? Webb site? Thanks :D
Reply
Old Nov 29, 2001 | 12:27 PM
  #11  
R BONUS's Avatar
R BONUS
Instructor
 
Joined: Oct 2001
Posts: 232
Likes: 0
From: Jacksonville Fl
Default Re: Anyone have any experience with high-flow CATS?? (MelloYellow)

I also would like to know website address. :D :cheers:
Reply
Old Nov 29, 2001 | 01:27 PM
  #12  
JWSchmidt3's Avatar
JWSchmidt3
Thread Starter
Race Director
 
Joined: Sep 2000
Posts: 11,309
Likes: 0
From: Valley Ranch, Texas
Default Re: Anyone have any experience with high-flow CATS?? (2FST4U)

Car sound is another good company and makes a great flowing cat. You are looking at around $100 a piece.
I am looking forward to seeing how your setup turns out JW. It sounds like you are pulling out all the stops! :)
Not pulling out all the stops, just looking at all my options. When I'm done, I'm done. No more adding this or that. I like to weigh gain vs value. It seems the cats are not meeting my gain vs value requirement, so I'll probably not do it. I'd like more opinions and experiences though before I make my final decision. My "little project" should be complete by this weekend. I'll be more than happy to discuss details and results then. :cheers:
Reply
Old Nov 29, 2001 | 01:29 PM
  #13  
JWSchmidt3's Avatar
JWSchmidt3
Thread Starter
Race Director
 
Joined: Sep 2000
Posts: 11,309
Likes: 0
From: Valley Ranch, Texas
Default Re: Anyone have any experience with high-flow CATS?? (MelloYellow)

C&L $89ea 2.5" SD's.

They will far outflow your cat-back mufflers.
You should pick up 5-10 rwtq.
I'm not sure I fully understand your reference to "cat-back mufflers". :confused: I have PRT's and an x-pipe, so can I flow any more?? Am I correct in assuming I will not gain any hp but I should gain torque?? Thanks.
Reply
Old Nov 29, 2001 | 02:03 PM
  #14  
2ndVette's Avatar
2ndVette
Drifting
20 Year Member
 
Joined: Jul 2000
Posts: 1,289
Likes: 1
From: the West is the best
Default Re: Anyone have any experience with high-flow CATS?? (SilverStar)

I saw a study of the flow characteristics of cats for various vehicles and the comparison with what is available from the aftermarket. The winner was the Dodge cats for pickup trucks. They significantly outflowed Random. I'll will try to find the article for everyone. However, I don't believe that the bang for the buck is there. Cats are expensive. If you want the ultimate, then I guess it's worth pursueing.
Reply
Old Nov 29, 2001 | 02:21 PM
  #15  
Chris@SD's Avatar
Chris@SD
Safety Car
 
Joined: Nov 1999
Posts: 3,891
Likes: 2
From: Houston, TX
Default Re: Anyone have any experience with high-flow CATS?? (2ndVette)

I saw a study of the flow characteristics of cats for various vehicles and the comparison with what is available from the aftermarket. The winner was the Dodge cats for pickup trucks. They significantly outflowed Random. I'll will try to find the article for everyone. However, I don't believe that the bang for the buck is there. Cats are expensive. If you want the ultimate, then I guess it's worth pursueing.
Have you ever seen the size of the Dodge truck cats? I bet they won't fit under the C5.... :)
Reply

Get notified of new replies

To Anyone have any experience with high-flow CATS??





All times are GMT -4. The time now is 07:11 PM.

story-0
2027 Chevrolet Silverado 1500 First Look: Everything You NEED to Know!

Slideshow: Is the 2027 Chevrolet Silverado 1500 the best Silverado yet?

By Michael S. Palmer | 2026-06-16 08:01:12


VIEW MORE
story-1
5 Best & 5 Worst Corvette Daily Drivers

Slideshow: 5 best and 5 worst Corvette daily drivers

By Joe Kucinski | 2026-06-15 10:32:13


VIEW MORE
story-2
The Headlights of Every Corvette Generation Explained

Slideshow: The headlights of every Corvette generation explained

By Joe Kucinski | 2026-06-15 10:17:14


VIEW MORE
story-3
5 Best & 5 Most Overrated Corvette Track Packages of All Time!

Slideshow: The 5 best and 5 most overrated Corvette track packages ever.

By Joe Kucinski | 2026-06-09 12:46:45


VIEW MORE
story-4
Every 2027 Corvette Engine Explained

Slideshow: Every 2027 Corvette engine explained

By Joe Kucinski | 2026-06-09 12:16:31


VIEW MORE
story-5
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette

Slideshow: A Jaguar designer's personal project imagines what a modern front-engined Corvette might look like if Chevrolet revisited the golden age of the Stingray.

By Verdad Gallardo | 2026-06-08 19:53:43


VIEW MORE
story-6
10 Ugly Corvettes That We Still Kinda Love

Slideshow: 10 ugly Corvettes that we still kinda love.

By Joe Kucinski | 2026-06-03 10:34:17


VIEW MORE
story-7
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer

A lot of money has changed hands at the online auction house over the years.

By Brett Foote | 2026-06-03 10:21:50


VIEW MORE
story-8
10 Things Every Corvette Owner Needs (2026 Edition)

Slideshow: 10 great gifts Corvette enthusiasts actually want for Father's Day!

By Michael S. Palmer | 2026-06-03 15:43:40


VIEW MORE
story-9
8 Most "Only Corvette Owners Understand" Quirks and Problems

Slideshow: These are the quirks, annoyances, and oddly lovable problems that every Corvette owner eventually learns to live with.

By Pouria Savadkouei | 2026-05-28 09:31:39


VIEW MORE