X5 idle sound, experts chime in please
 

Is this a normal sound for the m54 at idle in Park Position,
sounds like a whistle near the disa.
only mod was a K&N drop in filter under the hood.
temperature was around 40 F and car was drivin for around 30 minutes on highway prior.

X5 3.0 M54 Idle sound - YouTube





:dunno:

It's hard to tell without hearing it in person. However, it does sound a bit like you're beginning to get a small leak. First, I'd make sure that all the intake hose connections are on/tightened properly. Second, I'd take out the disa valve and check: 1) that the flap isn't hanging (i.e. broken), and 2) that the housing gasket is still "thick" (if not, either of those, or both, could be the culprit[s]).

Let us know what you find. Good luck!

Yeah it sounds like air is russhing in somewhere. check the DISA valve and make sure all hoses clipped in and no cracks. like Bayerische just said