3inch dump pipe, high flow cat, into 2.5inch stainless steel muffler, nice mandrel bends with no slag.
Had it done today, feels less restricted and turbo appears to spool up quicker, noticing boost starting at around 2500rpm.
Its a 4th gear power run, it was about 28 degree's today not much less in the booth.
Appears to gain 1 pound of boost intially then drops back a little, runs a little rich at top end, 113rwkw is not a bad, i was expecting a little bit more. I guess the larger intercooler and SP air induction makes a big difference if the 132rwkw is the true net gain, im still skeptical. The addition of a haltec piggyback, can lean out the top end running rich which would net 7rwkw extra.