H3 K&N CAI making a pop noise after I turn off engine, that normal?

[JonBishop]

Ok I thought nothing of it but lastnight I was like what the heck is that?!!! HahaSo here's what's going on.... When I turn my engine off, about 3 seconds after it is off it makes a pop(jus one pop) sound from my intake.......Any of u kno what that might be??? Cuz I'm totally lost hahaThank you

 

[M22KLARS]

It's just discharging the excess/left over air. Perfectly normal.

 

[JonBishop]

Ooooooo ok cool thank you

 

[4speedfunk]

Yeah...they all do that. Its the squirrel jumping off the rotating wheel.