cat or no cat? iz zero back pressure ok? or.. no? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 06-16-2003, 10:35 AM   #1
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Default cat or no cat? iz zero back pressure ok? or.. no?

ok.. since I need a new cat.. still have the original cat and muffler.... is cutting it out fine? will I loose power or what? I have heard that I will loose my get up and go off teh line..( I like to zip around town ) so having no pep would be bad cause I have an issue with the whole egg smell and I put in a bosh o2 from murray'* so I am getting a delco and want to know about the whole cat or no cat.... will it make me slower or not?
hanks guys
Ed
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Old 06-16-2003, 10:42 AM   #2
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First off, there is a federal law that states if your car came with a CAT that you need to ALWAYS have one on it. (do as I say...not as I do LOL)

A lack of back preassure will hurt your low end torque. What would be best would be a high flow cat and a performance muffler. Even a slightly larger diameter pipe wouldn't be bad either. If you go with no CAT you will also probably notice more of a gas smell comming thru the exhaust since a lot less excess gas is getting burned off. Unless you plan on heavily modding your car I would stick with some sort of CAT.

Just my .02
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Old 06-16-2003, 10:52 AM   #3
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Agreed, taking off the cat is not recommended in my opinion, I installed a high flow cat and performance muffler, and I have no regrets, you get increased power. The trade off is better peformance, a throathy sound, and a is compliant with all laws
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Old 06-16-2003, 10:57 AM   #4
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ok so.. these high flow cats? where can I get one localy? I need one like a month ago? and well, I can have my guy toss any old muffler on there... prolly one with fake dual outlets on both side tucked just behind my bumper cover so it looks cool when its colder out and yeah.. how much these things gonna run me?
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