My oh my... must be something with newer cars then, i dunno what the hell a cat does, cep for make it lose power, and filter more crap thru, but its worth keepin it on there then. I made a very nice setup for my old 202 a while back with two - piece extractors joining to one with a single muffler before the diff curve, and a big hotdog at the back. Fully ricey, but the 202 was worked, so i didnt really care. 17" rims too...NOO!!! I Miss em :'(