Weird squeaking noise at acceleration (video attached)

So not sure how to describe it or where to put the post but I did a cold start this morning and in park when I rev it a little but it names this repetitive whistle like noise refer video.

Please let me know what it is and how to fix it :)



It's a 2007 e93 335i n54

Mods (performance)

Jb4

Vrsf charge pipe

Hks ssqv bov

Ar catless dps

Bms dci