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MEOW!

I don't think a punched cat will be that annoying to the nature as long as it's a race car. On daily drivers, though, I tend to agree. OTOH there are racing cats out there that have almost no backpressure.

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Indeed. I have a 2.5" three-way high-flow cat from Magnaflow. That takes care of the backpressure and the DOT emissions compliance.

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yeah but why pay for that when you can punch it out for free? i dont think the emmissions guys are gonna make you show them whats inside your cat.

No, but they do a sniff test to see what's coming out of it....

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If you have a clean enough engine, you shouldn't have to worry about it. My dad use to run his car with out a cat and he still passed his emissions. If you keep you motor clean, you should be fine. Yeah its a little extra work but its worth not getting a fine right?

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I have never bought a car for more then 500 bucks.

First Car. '75 Toyota Celica GTS- $300
2nd- '89 Dodge Colt GL- $300
3rd- '90 Mitsubishi Mirage- $400
4th- '90 Toyota Pick Up- $500
5th- '93 Mitsubishi Eclipse- $100

here in south dakota, there not to stringent about that so every car i plan on rodding gets the cat bashed out. its amazing what it can do on a small displasment motor.

Not sure if its true but i herd from a few people that that the stuff you bash out has platnum in it. the junk yards here give 30 bucks for the cats here if there in good shape whitch kinda supports that idea. It just might be BS thou..

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speed is a drug. take three galons and call me latter. Jp Parker

On a relativly stock car I wouldn't bother with it. Wont gain hardly a thing on a N/A vehicle. My car still has a cat and stock exhaust and I ran a 14.9....but with the amount of boost I'm pushing I am getting an exhaust made without a cat. Should net some large gains in power across the band. Then when I go to get emissions tests, I will just swap over to the stock set up. If your car is properly tuned it will burn most of the HC's therefore making a cat relativly useless. Only on older, higher milage vehicles are cats a real benefit to emissions.

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Turning a 4g61t into 1595 cc's of FURY!
10.995 @ 134.44 - http://www.youtube.com/watch?v=bZXvcvzuWGQ

SOLD to the fastest shifting hermaphrodite in CO

Yeah, and those new european emmission standards require a cat, no matter how clean your engine burns. However, those older engines don't have to meet such high emmission standards. So w/ a set of new plugs & air filter....

Forcedpony, cats do contain platinum. It's the catalyst that helps oxidizing unburnt HCs and CO using extra O2 and the NO/NO2 created by the engine. I'm not sure if cats also contain palladium and rhodium ($$$).

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Yep, those are the Magic Three. And yes, places will give you money to recycle them because of the precious metals contained within.

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