Cat Removal
Thread Starter
Racer
Joined: Dec 2007
Posts: 262
Likes: 12
From: Montgomery Alabama
Cat Removal
I have a 1993 base model C 4 and I would like to remove the cat converters in hopes of a deeper Corvette sound. Are there any problems with this such as the location of sensors or anything else that would interfere. Would this give the car a more "throaty" sound as opposed to grandma's oldsmobile? I know that I would have to have extensions of pipe but is there anything else that I should be concerned with? Thank you so much for the advice and help this time and in the past.
Heel & Toe
Joined: Dec 2019
Posts: 20
Likes: 4
From: Little River, SC
I have a 1993 base model C 4 and I would like to remove the cat converters in hopes of a deeper Corvette sound. Are there any problems with this such as the location of sensors or anything else that would interfere. Would this give the car a more "throaty" sound as opposed to grandma's oldsmobile? I know that I would have to have extensions of pipe but is there anything else that I should be concerned with? Thank you so much for the advice and help this time and in the past.
Le Mans Master
Joined: Dec 2004
Posts: 5,488
Likes: 1,352
If you want to make it sound deeper cut out the resonator and replace the mufflers with 40 series flow masters or chambered muffler eliminators. I have no first hand experience removing the cats form an LT1
however if you pull the factory exhaust and fire it up running off the cats it’s loud as **** and rumbles so the cats aren’t the problem. They’re pretty free flowing really.
however if you pull the factory exhaust and fire it up running off the cats it’s loud as **** and rumbles so the cats aren’t the problem. They’re pretty free flowing really.
Heel & Toe
Joined: Dec 2019
Posts: 20
Likes: 4
From: Little River, SC
I have two 02 sensors on my 92 LT1, one on each side at the beginning of the exhaust pipe after the manifolds. The cut was made immediately to the rear of the O2 sensors. The cats, Y pipe, and the big resonator are gone. Strainght pipes run from the cut directly to the factory mufflers. Everything looks original factory when viewed topside. As I said, it sounds great without the interior drone and no check engine lights.
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Burning Brakes
Joined: Nov 2008
Posts: 1,159
Likes: 31
From: Orange Park Florida
After my full header install with turbo mufflers and cat removal I experience a strong smell like the car is running very rich. It sounds great but the smell is obnoxious. I am considering reinstalling the new cat I bought for it and reconnecting the air pipe coming from the air pump. I left all the emissions plumping in place in case it was reneeded.
Advanced
Joined: Feb 2017
Posts: 66
Likes: 26
From: New Zealand
I have a 1993 base model C 4 and I would like to remove the cat converters in hopes of a deeper Corvette sound. Are there any problems with this such as the location of sensors or anything else that would interfere. Would this give the car a more "throaty" sound as opposed to grandma's oldsmobile? I know that I would have to have extensions of pipe but is there anything else that I should be concerned with? Thank you so much for the advice and help this time and in the past.
Racer
Joined: Jul 2016
Posts: 308
Likes: 79
From: Orange CALIFORNIA
I cannot imagine removing cats but leaving rest of exhaust would change the sound much at all. Maybe some more pops occasional from unburnt exhaust if it gets hot enough. Leaving cats and changing muffler, cat back pipes, resonators, or headers would have drastic sound difference both pro/con.
I find the best sound from 439 steel exhaust with big open chamber muffler and a x-crossover pipe between the dual pipes to rear.
I find the best sound from 439 steel exhaust with big open chamber muffler and a x-crossover pipe between the dual pipes to rear.