Quote:
Originally Posted by 86MLR
[COLOR="red"]the catalytic converter is the restriction in the OEM header, tube size and lenght is pretty good
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Ah right. Sorry, but I misinterpreted your statement below and thought you meant you replaced it back to the stock cat converter, not the stock cat back exhaust system:
Quote:
Originally Posted by 86MLR
Replaced cat back to OEM with zero change to performance, knocked down the noise a bit
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I read it as 'replaced cat [converter] back to OEM...' not 'replaced cat back [exhaust] to OEM...'.