Catalytic Converters
Thread Starter
Drifting
Joined: Dec 1999
Posts: 1,330
Likes: 36
From: Waynesboro, PA
Co-winner 2020 C4 of the Year - Modified
Catalytic Converters
I am in Maryland, where we have emissions testing, so I need to keep converters on the car. My whole exhaust is off right now, and I was wondering if it is worth buying the Random Tech high flow cats, or should I just put the stock (70,000 miles on them) converters back on? I already know from other forum members that full length headers with a y-pipe and single converter is not going to work out on an automatic LT1 car, so I will probably go with the Hooker shorties, converters, and a good cat back system. Has anyone had any good results from the Random Tech converters, or should I save the money and put the old ones back on? I'm sure new GM ones probably cost more than the Random Tech ones anyway.
Le Mans Master
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Re: Catalytic Converters (POLOVETTE 94)
IMHO as long as your stock cats are not stopped up, then you will be wasting money replacing them. By the way, TPIS shows a LT header system that uses 1 cat for the LT1 cars (92-96) I believe it is basicially their headers with a L98 style exhaust system.
Instructor
Joined: Nov 2002
Posts: 159
Likes: 0
From: Lusby MD
Re: Catalytic Converters (POLOVETTE 94)
I live in Md also, I recently installed headers (HOK-2149) and replaced the front two precats with a 3" Y-pipe that I bought with the headers, I left the main Cat for emissions. IMHO adding the headers and removing the pre cats made a huge differnece in the SOTP feelng taking off from the line. Also my AVG gas mileage before 16mpg, after 21.4 mpg, so I believe the pre cats were at least partially clogged, by the way the car has 76 k miles. I haven't retested emissions since but from what I've read it shouldn't be an issue with the main cat and smog equipment still on the car. my 2 cents.
:seeya
[Modified by Rays91L98, 5:55 PM 8/3/2003]
:seeya
[Modified by Rays91L98, 5:55 PM 8/3/2003]
Race Director
Joined: Aug 2002
Posts: 13,356
Likes: 0
From: tucson AZ
St. Jude Donor '04 & '05
Re: Catalytic Converters (POLOVETTE 94)
My Random Tech Cat works very well, Happy with the change in sound also.
Good Luck
tony
:chevy :chevy :chevy
[Modified by oldace84, 6:18 AM 8/4/2003]
Good Luck
tony
:chevy :chevy :chevy
[Modified by oldace84, 6:18 AM 8/4/2003]
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,008
From: Texas
Re: Catalytic Converters (93 ragtop)
IMHO as long as your stock cats are not stopped up, then you will be wasting money replacing them. By the way, TPIS shows a LT header system that uses 1 cat for the LT1 cars (92-96) I believe it is basicially their headers with a L98 style exhaust system.
