I have an jdm obd1 gsr swap in my 94 civic cx hatchback and don't know what exhaust to get beacuse the piping on the gsr is 2 1/2 .. I was thinking about going 2 1/2 or even 2 3/4custom piping all the way with an type one titanumin muffler. (can be found at http://www.aj-racing.com)

My friends think i should do the 2 1/2 piping then got with the universal mufller of skunk 2, or hks hiper, dunk, or even apex'i n1.
Also what piping size would be best?
Also should i gat an cat. convert?

any suggestion would help me alot.
thanx

 

Get 2.5 inch piping and a muffler, get a 2.5 inch cat too.

 

my motor is stock right now, but i just bought a set of jdm itr cams and jdm h-1 header...within a month going to build the head and port and polish it.