[W///]

Originally Posted by Richbot

Whirring at low rpm/idle from the accessories and front cover (just like every BMW ever)
Valvetrain noise at idle (32 valves springs lifters cam lobes, 4 vanos actuators, half a dozen chains whizzing around)
Clutch throwout bearing/flywheel noise
Gear whine
2000rpm drone in 5th gear
Hissing after running the AC and parking the car
Clinking from brakes after parking the car with hot brakes
Loud as hell on startup
Chuffle at wide throttle openings at lower rpm from the intake
Rear tire squealing
Police sirens

Originally Posted by mamadub

Exactly! It used to freak me out, now I've just come to expect it. Still have no idea what it is. If you find out, please let me know!

Maybe I'm thinking of the wrong noise. But after the car shuts off, there's a flap that closes behind all the vents. My E46 had that too. Supposedly to help keep dust and other things out of the car. Is that what you are talking about?

My car is making 2 really annoying rattles.
-RHS Jeeves (disabled by taking out fuse) is rattling. Gotta take that panel apart and see what's going on.
- My instrument cluster is rattling BAD now that the colder weather is here. The noise goes away when I put pressure on that reset button. It's driving me insane, and I can hear it with the windows up, even with a loud exhaust mod.