Gentlemens, after a long long time trying to solved my F20 whistle noise when engine cold start.
D Motorwerkz- Harvest @ Woodlands manage to solved it out. You know what, all these while I driving with 15 valve instead of 16 valve. Luckily my engine didn't spoil.
when I prompted to other service centre they tell you another things. When I check with Mr. Z and Dave from D Motorwerkz- Harvest @ Woodlands, they're manage to solved these extremely difficult issues which most of the BMW owners encounter.
I would said that D Motorwerkz team is very observed and experiences.
Amazing!
Any Q&A you may call 92772211 or 81260203 Mr. Z or Mr. Dave.
Try them why not?!