93CutlassSupreme Posted September 24, 2004 Report Share Posted September 24, 2004 ok, can anyone verify for me the size of the exhaust pipe on a single exhaust 3.1 Multiport, going into and out of the cat? i've heard 2.25" on here, just want to be sure before i buy the pipe. thanks. Quote Link to comment Share on other sites More sharing options...
conley3.1 Posted September 25, 2004 Report Share Posted September 25, 2004 I'm pretty sure it's 2.00" At least that's what I've been told in a similar post to your own last year. Quote Link to comment Share on other sites More sharing options...
TeeJay3800 Posted September 25, 2004 Report Share Posted September 25, 2004 The straight pipe I have in place of the cat is 2.5" and it welded up perfectly. Although I'm pretty sure the factory piping is 2.25". Quote Link to comment Share on other sites More sharing options...
93CutlassSupreme Posted September 25, 2004 Author Report Share Posted September 25, 2004 thanks guys i measured 2" now i need a new piece of pipe.... Quote Link to comment Share on other sites More sharing options...
Jon89le Posted September 26, 2004 Report Share Posted September 26, 2004 Where was it that you measured 2"? Quote Link to comment Share on other sites More sharing options...
93CutlassSupreme Posted September 26, 2004 Author Report Share Posted September 26, 2004 in and out of the cat. slightly flared 2.25" pipe just barely fits over the stock pipe. Quote Link to comment Share on other sites More sharing options...
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