aight finally finished this god forsaken b18c swap. but the exhaust manifold's b-pipe is like a good foot and a half away from the civic cat. am i supposed to use the gsr cat? or do i use like say a 99-00 si exhaust mani and b-pipe?

i'm hella tired of this open downpipe, its driving me insane and killing my low end. please help asap.

 

You could just weld an extension or testpipe..

 

will an extension make it any louder....this thing sounds like *** and i realy want the car to be as quiet as can be.

 

b16 header

 

id bring it to a shop and have them weld it.