I have a 94 GSR and I need a answer to this question asap so I thought I would ask the ITR forum.

Ok well I am going to buy a DC 4-1 JDM header and the ITR comptech exhaust for my 94 GSR. I found a good price on the ITR exhaust so I figured it would be worth it to take it to a muffler shop for a slight modification. So will I need to shorten or lengthen the b pipe? What will I do about my cat situation? Carsound, testpipe, custom? I just don't wanna end up gettin screwed if I can't make all the parts work together. Thanx.

 

yo IM sent

 

you will need to lengthen and get a carsound cat fabricated.

Or you could just call up SMSP and buy a cat from him made up so you wont have
to modify the exhaust.