Whoosing after shutdown...

When I turn my car off, I hear this whoosing noise, kind of like a pump sucking air or something for like 2 seconds after I turn the key off. Is this normal? What can it be?

your aftermarket intake

Ok cool, just wanted to make sure something did’nt need my attention.

my car has always done this, without an intake. friend’s accord (also no intake) does the same

All cars do this. Intake or no Intake. It’s just louder with an aftermarket intake.