Does anybody know what the exhaust system's dia. and it's down pipe as well is on the later TDI's in the last couple of years actualy is.
55mm I guess,
my golf 4 tdi pd115 has a 55mm exhaust piping, and my buddys ibiza tdi 90hp has a 55 dia also
55mm is pretty standard on vws. they use that dia alot on gassers too. well, not the powerful gassers.