[Maxmil982]

Can someone please lend their ear and listen to this weird noise my 535 is making. Its happening while driving and idling, and it goes in and out. The noise is loudest towards the end of the video. No codes are showing on Protools. The noise sounds like it's coming from the driver side of the engine bay, under the air filter.

[335i54n]

I would pop the filter 1st and check for metal glitter and also try it without the belt on.