topic says it all.. getting my b18c1 swap in a month want to get all the parts ahead of time.. i know you need to extend the exhaust a couple inches in order for it to work.. but ive heard you can set it up w/ a different header and a cat to make it fit correctly.. my rooomate has a dc header, stock dx cat and apexi n1 catback and had to make a pipe about 5 inches long w/ a bung for the o2 sensor

i will have a stock header, ITR cat w/ single o2 sensor bung, and apexi n1 catback, will i need to extend the exhaust at all?? let me see your setups. thanks

 

I wondered the same thing and supposedly you can get the gsr cat and itll bolt right up... http://students.washington.edu/kristic/95si2.html its all the way on the bottom

 

is the itr cat the same length as the gsr??? anyone know

 

The ITR cat is not long enough you need the gsr one