high flow cats
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yo,
im replacing my test pipe with a high flow catalytic converter in my 94 integra gsr. i already have a dc sports 321 header and sp2 catback exhaust. my question is, how do i know which sized high flow cat will fit in replace of the test pipe?
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Why would you put a cat in when you don't have one already?
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my car is not turboed and im selling the car.
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