Performance Cat
04-23-2002, 08:48 PM
#1
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Location: Lehigh Valley, PA
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Car: 00 T/A Firehawk
Engine: 346ci LS1
Transmission: MN6
Axle/Gears: 3.42 LSD
Performance Cat
The cat on my car is basically rusted and nasty and I already have a cat-back exhaust so I was wondering which cat is the best bang for my buck when it comes to performance. Also, would it be a direct bolt on? Thanks for your help!
Mark
EDIT: Although PA currently doesn't have emissions testing, I still want to run a cat in case they bring it back sometime. Otherwise I would simply put in a straight pipe and be done. Forgot to add that in.
Mark
EDIT: Although PA currently doesn't have emissions testing, I still want to run a cat in case they bring it back sometime. Otherwise I would simply put in a straight pipe and be done. Forgot to add that in.
Last edited by Y2KFirehawk; 04-23-2002 at 09:00 PM.
04-23-2002, 08:51 PM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Check out Catco at www.summitracing.com
04-24-2002, 09:29 AM
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Car: 1990 Camaro RS (IROC-Z Clone)
Engine: LO3
Transmission: T-5
Axle/Gears: 3.08
Random Technology Supper High Flow Cat. It's a little on the expensive side but I think it's one of the better preforming cats, I got one waiting to be installed right now
04-24-2002, 11:05 PM
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Car: 2006 Tacoma X-Runner
Engine: 4.0L DOHC V6
Transmission: 6-Speed Manual
Axle/Gears: 3:15 LSD
I don't know what kind of cat mine is but it just looks like my pipe is bloated in one area. The thing is very small. Smaller than a Catco one.
04-25-2002, 07:02 AM
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I bought the Random Technologies Cat to replace my gutted one (yes, some counties in PA have emissions - and I had to do this). The butt dyno told me that the car pulled slightly harder with this cat over the gutted cat.
This, in my mind, adds credence to the theory that the computer/car is tuned for a certain amount of back pressure and lack of back pressure isn't necessarily a good thing.
Expensive, but worth it IMO.
This, in my mind, adds credence to the theory that the computer/car is tuned for a certain amount of back pressure and lack of back pressure isn't necessarily a good thing.
Expensive, but worth it IMO.
04-25-2002, 10:02 AM
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Car: 99 Formula
Engine: LS1
Transmission: T56
Axle/Gears: 342
Originally posted by KeithO
This, in my mind, adds credence to the theory that the computer/car is tuned for a certain amount of back pressure and lack of back pressure isn't necessarily a good thing.
This, in my mind, adds credence to the theory that the computer/car is tuned for a certain amount of back pressure and lack of back pressure isn't necessarily a good thing.
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04-25-2002, 01:55 PM
#9
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Yes, the computer is tuned for a certain degree of back pressure. Back pressure is not a good thing, but when the computer tunes the engine as if it is there, and it is not there, then the lack of back pressure is a bad thing. Since there is no "Back Pressure Sensor", having zero back pressure isn't something the computer can take advantage if. If the car can't adjust for it, the net will be zero or negative...
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