AIR problem?
I'm asking cuz for a while now, i've been hearing a loud whistling sound which i belive is coming from somewhere in the AIR system since it happens at start up after the car has sit for about and hour or two then the noise shuts of like in a minute or two. (oh..and it does only happen after the car has sit a bit, i haven't heard that loud noise on a cold start) now i know you'll hear the pump during normal operation, but this sound is pretty loud and u can hear it coming out the tailpipe too.
could this be a problem related to the AIR system...or anyone think it could be something else?

