[Kou]

Hi, I have a 08 335i (98,xxx km) and she's been smoking.. here is the story,
My car sat in the garage for about 6 months and I upgraded it with FBO stage 2 and it started burning oil. My tech did a test as I told him it's the PCV and found out it was culprit, so we installed the RB PCV valve. The smoke went less and less for a few days and then it started to smoke hard again. I hope it's not the turbo seals..

Here are the recent report of my car:
- Heavy smoke on start up after start up rev.
- Heavy smoke on idle. (Before warm up)
- Very light smoke on idle. (After warm up or highway trip)
- No smoke when accelerating/cruising.
- No smoke when engine revving. (Neutral)
- Medium smoke after revving at high rpm.

I want to know what's the most possible cause before I take my car apart to find out.

Thanks!