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Old 03-13-2007, 02:35 PM   #8
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Originally Posted by Pkmgarf View Post
[CENTER][B][I][U]-Cat or ORP?
Here is where you need to make your major decision. The stock catalytic converter is not compatable with the SVT header, as it mounts in an entirely seperate location. Each of the pieces you can use (SVT cat, high flow cat or ORP) have their benefits. The stock SVT cat will definately allow you to pass emissions and will also keep the noise level to a minimum. The off road pipe (ORP), which is basically a piece of pipe that eliminates the catalytic convereter, is not emissions legal, and can get you a ticket. However, it will yield the largest performance gains. But, it is loud, has a high air pollution level, and will present issues if you live in an area where emissions testing is done. The high flow cat has the best of both worlds. It keeps the car quiet, gives it great gains and is legal, but relatively expensive.

SVT Catalytic Converter-The ORP will look very similar, just without the bulge in the middle of the pipe

You can see if you can find a Stock SVT Cat or find a Used R/T Highflow or ORP used made for the SVT Header Conversion.
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