2013 shut down "rev" noise..

I have a 2013 DCSB with 2200 miles on it now, but from the get go ive noticed a noise when I shut the engine off I hear a noise that sounds like an electric motor reving up very quickly then fading out just as fast. It sounds like it comes from the glove compartment.. Any one else in the 2nd gens hear this? its faint but loud enough. Ive never heard this in any other vehicle and cant even wrap my head about what it could be

Thought about going to the dealership to drive another 2013 but i figured id ask here first.. Thanks!

 

Its somethin to do with the airbox. my buddies 13' does the same thing and i opened the hood and listened while he shut it off. you can see the intake hose move

 

I found a thread on it now, sorry to resurect. I guess its normal. It bugs me still. O well

 

My brand new (had it for only 3 days) '13 DCSB 4 cyl makes the same noise.