Flowmaster Cat Back and a Haibeck chip

[jonszr1]

thought I would share what i modified on the flowmaster system that did 2 things 15 more rwhp and made it sneeky quiet at the same time. I was looking through jegs' and came upon this ultra flow muffler that had duel in and outs . i got a 3in one and replaced the resonator with it . went 3in off the headers to the x pipe muffler then just used the exisisting flowmaster system from there. it is as quiet as the stk system when cruizing and just loud enough when you get on it . Its about 40% quieter than the original flowmaster . Now i can plant my foot without worring about everyone hearing (cops) and she is faster too. one guy says its sneeky fast. that this car tooo quiet to be that quick. that of course after I dusted his 04 z06