Fabspeed Cat bypass pipes
Can anyone help me with a problem about fitting cat bypass pipes. My car is cayenne tt with 500bhp factory upgrade. The exhaust has a joint behind the secondary cat. Is this correct or should the sytem be one piece straight through?
Also what is diameter of standard exhaust pipe as my bypass pipes seem to slim?
Thanks!
Also what is diameter of standard exhaust pipe as my bypass pipes seem to slim?
Thanks!