White smoke and strong exhaust smell in cabin and outside
 

I can't remember how long this has been going on but I just had a new Magnaflow cat-back system installed yesterday hoping something might change but nothing has. Still get white smoke on cold starts and accompanied with I believe to be a strong exhaust smell. Also anytime I come to a stop at light or parking lot get a real good whif of strong exhaust. Almost like you are sitting behind a bus or something. I have already had cylinder head replaced and turbo still boosts fine. Coolant level doesn't seem to change. However I have not paid close attention to the color of the coolant, will check tonight. It is possible that the cylinder head has gone again or HG. But every time I mention to mechanic he can never get it to smell. Hoping to take him for a rip tomorrow and see if I can get him to smell / see it. Any advice / experiences would be greatly appreciated. She does have 222,000 km on her too ;) But runs like a champ, no stutters, idles fine, pulls hard and wrecks my buddies S4 B6 4.2 till about 6th gear LOL
Cheers.

Re: White smoke and strong exhaust smell in cabin and outside
 

Sounds like your turbo is tired, have the mech check for shaft play ;)

Re: White smoke and strong exhaust smell in cabin and outside
 

Play on the wastegate?

Cheers