flyry110

hey guys, well, i got so sick of my junk stock muffler i cut her off, and slapped a glasspack on till i can buy a nice muffler. i had a brospeed tip laying around so i put that on as well. anyway, the tip is hanging outside the bumper (very very VERY ghetto i know, as i am MR. NON ghetto man) and i'm fairly annoyed cause of my mismeasurement. well. . . .my exhaust shop was telling me he could bend me up a custom catback for 75 bucks. i am seriously considering this, however it'll eliminate the resonator. he can also mount the pack further back and then mytip wouldn't hang out all ghettolike. anyway, what size pipe should i run from the cat? does anyone know when we go TOO big on our cars. i was thinking like 2 1/2. Later i'm going to be putting on either a custom y pipe (cause of headers) or regular one, and i high flow cat, so keep that in mind. any ideas?

Jon91SE

Keep it under 3" there is such a thing as not enough back pressure, unless your boosting/supercharging 2 1/2 is fine

flyry110

yeah, i didn't want to chew up the valves.