Whistle at low throttle?

[spencers]

25 degrees this morning and the whistle is GONE!

I can finally drive at ease knowing I've finally solved this stupid noise!!!!

[NorCalZman]

I am so glad I found this thread and hopefully I will have my sanity back when cruising on the freeway. I have this annoying whine that happens only when I am driving and from 10-15% throttle. Above or below that it immediately goes away. No codes or anything. Just the whine. I thought it sounded electronic in nature and couldnt tell where it was coming from, but it sounds like others have solved this with new intake boots. I am kind of surprised I can hear it on the freeway if its a tiny air leak but whatever.

I will order the new upper and lower intake boots, F connector, and DISA (what the hell) immediately.

http://www.bmw330ci.net/maintenance/tubeelbow.php