Sup guys. I have a 92 Si and I plan on upgrading the exhaust system. I settled on a Thermal R&D. I am also going to upgrade the cat at the sametime. I want to make sure I order the correct exhaust.

If I buy a carsound cat 2.25" inlet/outlet...is it the same LENGTH as the stock Si cat or is it a different length where i would have to order a Thermal R&D exhaust for a VTEC 4th Gen Prelude???

Please post what you are currently running. That would help me out A LOT!!

I am hoping I will have a factory-like fit after I upgrade my car to a DC Sport header, carsound cat, and Thermal R&D axle-back exhaust.

Thanks in advance.

 

not to hijack your thread man, but i've got a question to go along with it.

What about a JDM exhaust? i'm told you need a shorter cat i think is right? Basically i guess just whats the deal here, do you need a shorter/longer cat? to make it work.