My intake majes a whining hiss noise around 4k rpm and I'm not quite sure the cause of it is I have tried isolating the problem but my wife is to impatient toi sit in my car and hold the pedal down while investigate. Does anyone else have a hiss noise from their intake?

 

My intake makes that hissing noise as well. I seem to recall that I read a post on here that someone elses make the noise as well. Anyway, I double-checked that all of the connections were secure and I didn't have any leaks just to be safe. It is either a noise that was masked by the thick plastic OEM intake or something newly introduced. If you don't have any leaks then I would say that everything is OK.

 

It is probably just the sound of the intake sucking in air. On my CL-S it was somewhat loud and when it shifted it sounded like a blow-off valve.

 

That's normal. The AEM makes a short whistle/hiss when you punch the gas anytime. I like the sound... It's very subtle.

 

Yep, normal.

 

Yes... normal.
But hissing was pretty noticeable on my Acura TL. It sounds nice though. I liked it.

 

mmm turbo