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thanks guys. I figured a 4-2-1 would be the best route to go mainly because of the back pressure issue.
And while on the subject, I'm getting a new header but I know that some problews will arise. Mainly because on my car the cat is on the header and with out a cat the O2 sensor will make my car run a little whacky. I once found a thing that you hook to your O2 sensor that sent a fake signal to you computer telling it that everything was ok. But I have no idea what site I found it on and I was wondering if any of you might know where to get such a device?
And what's the best way to go with a cat? Use a nice hollowed out one to fool people, or break down and buy a performance cat?
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