[timfed]

Car is running perfect no codes but started hearing this noise a few days ago. Gets louder as rpm’s rise so I thought it might be a pulley or something else belt driven but I checked and everything is spinning freely. I’ve driven over 400 miles with the noise and have no issues. Does anyone know what this might be coming from?

Video 1: https://youtube.com/shorts/fZIuXLV2i1Q?feature=share

Video 2: https://youtube.com/shorts/y6lVZrWldy8?feature=share

[Bimmer_Bro]

Hard to tell from video. Does it sound like a police siren in the distance. Turbos do wine when they start to wear out.
If not I would check the clamps on the charge pipe, make sure they are F'n tight. Also check the intercooler connections. Oem ones leak all the time.
I once had a pinched o ring on my t map sensor (on charge pipe) that caused a small boost leak and whistle sound.

[Bimmer_Bro]

A collapsed oil filter can also make odd sounds too.