I've got a 96 ex with an aem v2 intake. I notice when I'm sitting idle I am hearing a vacuum sound from the intake. It's not a sucking, it's a high pitched hum. I'm wondering if anyone can give me any ideas on what this may be or how I could start diagnosing it.

Thanks ahead of time for any help.

 

That's normal for any cold air intake.

 

Alright, thanks for your time. I'll rest more easily now.