PRE-CATS
Thread Starter
Melting Slicks
Joined: Sep 2003
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From: 1,000,000,001 Posts
PRE-CATS
I HEAR ALOT OF YOU GUYS IN THE FORUM TALKING ABOUT GUTTING THE PRE CATS..
oK MY QUESTION IS , IF I WERE TO DECIDE TO DO THIS , HOW WOULD I DO IT
WHAT TOOLS WOULD I NEED
oK MY QUESTION IS , IF I WERE TO DECIDE TO DO THIS , HOW WOULD I DO IT
WHAT TOOLS WOULD I NEED
Team Owner
Joined: Sep 2001
Posts: 62,154
Likes: 1,731
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
Re: PRE-CATS (1990CORVETTE)
Youd have to cut open the front Y pipes, get the material out, then weld them back together.
We dont talk about gutting precats, we talk about gutting the main cat. We usually replace the front Y pipe with something aftermarket.
We dont talk about gutting precats, we talk about gutting the main cat. We usually replace the front Y pipe with something aftermarket.
Drifting
Joined: Aug 2002
Posts: 1,775
Likes: 125
From: Birmingham AL
Re: PRE-CATS (1990CORVETTE)
The thing to do is to buy a precatless front y pipe with high flow main cat from Ecklers. It's supposedly 49 state legal and easy to bolt in. And then you can buy a new rear y pipe with crossover and muffler eliminators with black recatangular LT1 tips. Then you have a new exhaust that sounds really mean.
Team Owner
Joined: Dec 2000
Posts: 90,675
Likes: 304
From: SE NY
Cruise-In II Veteran
Re: PRE-CATS (1990CORVETTE)
Some people ram a pipe through it till the innards are busted out; or you can just get a cheap hi-flow cat from Summit Racing that will still give a good sound and even pass emissions.
If you are going to change the front Y, use lots of Liquid Wrench on the three bolts and let stand overnight to avoid breaking those rusted devils.
If you are going to change the front Y, use lots of Liquid Wrench on the three bolts and let stand overnight to avoid breaking those rusted devils.
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Verdad Gallardo
Le Mans Master
Joined: Jul 2002
Posts: 5,818
Likes: 2
From: Alive and well in Burlington NC
Re: PRE-CATS (65Z01)
you can just get a cheap hi-flow cat from Summit Racing that will still give a good sound and even pass emissions.
PS - Use the caps lock to turn them off. Indicates you're yelling. :thumbs:
[Modified by Steel Blue 91, 6:48 PM 9/27/2003]
Advanced
Joined: Feb 2003
Posts: 64
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From: North Dallas TX
Re: PRE-CATS (Steel Blue 91)
1990Corvette, being that you are also from TX, how strict are the laws regarding gutting/altering Cats here? How aggressively do they monitor any such changes, and are the penalties/fees high for getting caught doing the abovementioned changes? I just moved to Tx and would like to also makes such changes. Thanks.
Melting Slicks
Joined: Dec 2001
Posts: 2,049
Likes: 0
From: Texas
Re: PRE-CATS (90whitevette)
1990Corvette, being that you are also from TX, how strict are the laws regarding gutting/altering Cats here? How aggressively do they monitor any such changes, and are the penalties/fees high for getting caught doing the abovementioned changes? I just moved to Tx and would like to also makes such changes. Thanks.
Example: My '81 Vette had no headlights (I installed them that night), no horn (guy said "just tell me that you're putting it on tomorrow :lol:) , bad exhaust leak we didn't fix till about 2 weeks later, balding tires, and I still got inspection :lol:
Then again, my '95 was perfect except no HIGH-BEAMS and I got denied, paid $10 for nothing :rolleyes: :mad good thing too, because I really need those high-beams driving around with thousands of other people on roads with lights every 5 feet.
You're in the clear no matter what you do, but I'd at least have an empty cat on there :yesnod:
[Modified by BowTieBlood, 2:47 PM 9/28/2003]
Thread Starter
Melting Slicks
Joined: Sep 2003
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From: 1,000,000,001 Posts
Re: PRE-CATS (BowTieBlood)
you said it right there, it depends on where you go,,,,,, I was told when I first moved here go to this one place and buy hte guy a coke and he will pass you,,,,,, so i did,,, and passed with my bronco that doesnt have anything on it but performance stuff,,, so just ask around up there,,,, take it to one of those off the wall places and the will do it for an extra $5
you gotta love it here in texas
you gotta love it here in texas
