Cats
Thread Starter
Drifting
Joined: Jul 2006
Posts: 1,969
Likes: 1
From: Sold my Vettes
Cats
I did a search and really did not find what I was looking for. I know it's not legal, but have any of you removed your cats? If so, was there a noticeable performance gain? Also, what about sound. I am running Flowmaster #10's 1 chambered racing mufflers, so I am hoping if I remove my cats I will get an even more agressive and louder sound.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
I have the KOOKS offroad X-pipe which eliminates the cats. I am probably going remove the offroad to put the KOOKS high flow cats on because the odor is pretty nasty. I have a conservative tune and I'm going to make a pulley change anyway so I will just re-tune to adjust for any power I might lose.
Instructor
Joined: Sep 2006
Posts: 105
Likes: 1
St. Jude Donor '06
Hey saplumr
I was going to buy the offroad x-pipe this week along with the kooks headers. What did the non-cat do to your sound? I'm not worried about passing a smog test since I don't have one where I live.
Also how bad was the smell? Is it to the point it kills you at a red light or just sitting still in the garage?
I was going to buy the offroad x-pipe this week along with the kooks headers. What did the non-cat do to your sound? I'm not worried about passing a smog test since I don't have one where I live.
Also how bad was the smell? Is it to the point it kills you at a red light or just sitting still in the garage?
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Originally Posted by ZuluZulu
Hey saplumr
I was going to buy the offroad x-pipe this week along with the kooks headers. What did the non-cat do to your sound? I'm not worried about passing a smog test since I don't have one where I live.
Also how bad was the smell? Is it to the point it kills you at a red light or just sitting still in the garage?
I was going to buy the offroad x-pipe this week along with the kooks headers. What did the non-cat do to your sound? I'm not worried about passing a smog test since I don't have one where I live.
Also how bad was the smell? Is it to the point it kills you at a red light or just sitting still in the garage?
Instructor
Joined: Sep 2006
Posts: 105
Likes: 1
St. Jude Donor '06
Awsome. Thanks for the fast reply. Now I don't know what to do. I really want the best sound possible but don't like the idea of smelling like smog. Plus I was hoping to save some money by not using the cats.
Guess I should rethink this.
Guess I should rethink this.
Le Mans Master
Joined: Oct 2005
Posts: 5,040
Likes: 879
From: Tampa Florida
Originally Posted by saplumr
I have the KOOKS offroad X-pipe which eliminates the cats. I am probably going remove the offroad to put the KOOKS high flow cats on because the odor is pretty nasty. I have a conservative tune and I'm going to make a pulley change anyway so I will just re-tune to adjust for any power I might lose.
You made a very good point about the smell of the X-pipe. I had them on my 02 Z06 and noticed the same. I was surprised that our forum members did not take note of this or maybe it never happened to them. The 02 Z06 was my first Vette which I purchased in July 05. The X-pipe was already on the car. I didn't know better.
Race Director
Joined: Oct 2005
Posts: 14,555
Likes: 1,255
From: Saint Albans, WV
Originally Posted by Fore58
saplumr,
You made a very good point about the smell of the X-pipe. I had them on my 02 Z06 and noticed the same. I was surprised that our forum members did not take note of this or maybe it never happened to them. The 02 Z06 was my first Vette which I purchased in July 05. The X-pipe was already on the car. I didn't know better.
You made a very good point about the smell of the X-pipe. I had them on my 02 Z06 and noticed the same. I was surprised that our forum members did not take note of this or maybe it never happened to them. The 02 Z06 was my first Vette which I purchased in July 05. The X-pipe was already on the car. I didn't know better.
Yep!! I've done some dumb things in my life and removing the cats rates right at the top.
Drifting
Joined: Jul 2003
Posts: 1,625
Likes: 0
From: Fountain Inn SC
I've got LG's with the off road set up, and don't have an obnoxious smell. That is without a tune too. I'm running a bit rich, but no real bad smell. The only thing I have that I don't want is a CEL for the rear O2 banks.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
2027 Corvette vs The World: Every C8 vs Its Closest Competitor
Joe Kucinski
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
Instructor
Joined: May 2006
Posts: 145
Likes: 0
From: Guaynabo, Puerto Rico
Originally Posted by possessed
I did a search and really did not find what I was looking for. I know it's not legal, but have any of you removed your cats? If so, was there a noticeable performance gain? Also, what about sound. I am running Flowmaster #10's 1 chambered racing mufflers, so I am hoping if I remove my cats I will get an even more agressive and louder sound.
I have a set of custom SS cat by-pass pipes which I will be replacing with the LG Headers and off-road setup...so if you are interested in them let me know and I can sell them to you.
Regards,
Manuel