I recently had a problem where if I did a hard acceleration there would be a cloud of smoke from the exhaust 2 or 3 seconds afterwards. I thought maybe the turbo had a problem but the internet hinted that a blocked PCV breather could cause smoke. I disconnected the catch can and left the breather tube open to atmosphere and went for a drive up and down the street. No smoke, problem solved! The catch can does have a sight glass level indicator but I couldn't see anything. I'll remove it and have a closer look, the sight tube is a bit yellowy and not clear. Its a relief to know the turbo is ok.

Edit: Can someone explain to me why it smokes with a blocked breather?