I have this noise coming from the passenger side intercooler area. It's intermittent and sounds like metal knocking or bearing whining. When I took off the air filter and touches the intercooler, I can feel it vibrate as the noise continues on.

I was under the impression that intercooler consists of metal fins to cool intake air, and that there isn't any moving parts in it.

Maybe this is a turbo noise?

Not too sure but I'll take an audio recording of the noise once my new air filter comes in and I open up all the plastic bits again.

Just wondering if anybody's experienced this strange noise on an E70 V8.

It mostly comes after engine shut off after a good 30 minutes drive.

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2003 X5 4.6is Estoril Blue, acquired March 2018
2013 128i M Sport 6 MT Space Grey daily driver
2010 535xi 6 MT Barbera Red