We all know that the design of the header/cat is different from others. If I do a motor swap, how will the header and new cat fit? I mean, I know to get a b series header, but what about the rest of the piping and cat? Here's my idea:

a B series header, a cat. coverter, and a cat back exhaust system for an EG hatch. I just eyeballed the piping for the EG compared to the EK and it looks like it'll work. Any comments? Ideas? HELP!?

 

i read somewhere is that if u get a ITR header then the exhaust system from a SI would fit..

 

For a while, i was using the complete ex cat and piping for a B16. Everything should bolt right up. I eventually got the midpipe from the SI and still using the D16 cat.

 

Yeah, in your case that sounds do-able beacuse the design of the EX. On a DX it's different because the cat is directly below the header, then you have a longer pipe that extends throughout the whole car until you reach the exhaust.

 

i just put a gsr in my oo h/b and i got a jdm r header and i just used the cat back i had on there allready alli had to do was cut the flang and rotated it till it lined up with the header but im also not running a cat

 

Well I was thinking of doing that too and just use an o2sim but I heard that runnin no cat puts out oders. And if the police catches a sniff of those oders then they can arrest you. Someone has to have a resolution out there! Or better yet, if anybody knows if a EG catback will fit an EK that'll make my life easier.