Okay, I've wants to have a mess around with the exhaust on my 2.0 tdi!
ive had the DPF removed and it made a slight difference in sound but I've watched videos recently of tdi's that have had the back box removed and they sound mint!
my friends got a seat leon 2.0 tdi same engine as my a3 and he had the back box removed today and on getting the car back it didn't sound any different! So I'm in two minds on what to do will it be different for me cause I've had the DPF removed?