Here is my question. I am running a B16 with a Greddy 4-2-1 SS header, the headers collector has a 2" diameter. This goes into a 2.5" high flow cat and then to my 2.25" exhaust pipe. I am soon to be switching to a Tanabe Racing Medallion to rid myself of an exhaust which has a few poor bends causing some crappy sounds at certain RPM's. Would the change in diameters cause my car to sound like crap even with the new exhaust and should I buy a new cat with the same diameter pipe? Or am I completely off with my ideas? thanks
Brandon
