Well, I finally got around to taking the cat off my system.(Really only did it to save the cat for next nct to be honest
) Strange exhaust note to get used to- a lot louder at low revs while not too loud on the motorway
. Definate performance gain, 1st gear acceleration is very quick now when it used to be crap! I'm now straight through as I removed the center muffler and only have the back box which ends in quads. The car gets a lot more attention driving around town as it has a low rumble which I like and then turns into an M3 when the foot goes down!