i was looking at the zpi mid pipe but didnt see any cat's. im gonna put the mmw header on witch doesn't have a cat either. that would be no cat at all. anyone have more info about the mid pipe. also i have the trd exhaust. is a mip pipe a good investment

without a turbo the midpipe is raspy at high rpms.. and since you have a header itll be even more raspy.. i had the midpipe mated to a HKS hi power exhaust and the zpi spipe (no header) and it wasnt raspy one bit except at WOT which is a given. its a 2.5 diameter pipe, easy quick install, great quality :)