[BK9731]

I posted about this earlier with no luck, so I'm going to try again. I love my M3 and just trying learn more about how modern turbos work.

- Time to time, the car feels like the turbos aren't working properly. It's not a limp mode slow, but struggling to freely rev.
- Car sounds and feels a little rough, and the throttle is noticeable stiffer.
- Feels as if the turbos are clogged up.

What drives me nuts is it will correct itself after few days and drives like a dream for a week or so until it happens again.

- It seems to be related to icy/snowy weather. It was freezing cold + snowing today to the degree that a sheet of ice formed a layer on the front bumper.

I've done some web searches and came up with faulty MAF sensors, and vanes clogging. Again, the symptoms come and go. Please help me understand what might be going on!

My car has 4200 miles on it, DCT.