ITR catalytic conv.
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From: California, USA
ITR catalytic conv.
Is modifying the stock cat w/ the 2.5" flange even worht it. The whole point of a bigger diameter cov. is to free up exhaust gases for more HP. So my question is what kind of restrictions will I come acorss if I don't buy the aftermarket cat and just modify the stock ITR to fit a 2.5 collector/ jdm header? Thanks, Paul
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Re: ITR catalytic conv. (jdmtyper)
Is modifying the stock cat w/ the 2.5" flange even worht it. The whole point of a bigger diameter cov. is to free up exhaust gases for more HP. So my question is what kind of restrictions will I come acorss if I don't buy the aftermarket cat and just modify the stock ITR to fit a 2.5 collector/ jdm header? Thanks, Paul
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