Definitely doesn't sound quite right.. sounds like it's coming from the throttle body. Only happens when the engine is hot - +80ºc and I shut it off after putting it in park. I took a couple videos with my phone to let you hear the sound.

Is it a normal sound?

http://www.chadohman.com/video/0924081829.mov
http://www.chadohman.com/video/0924081827.mov

 

yes. mine does it to.

 

I think it's kind of odd. Doesn't sound normal to me... it should shut off but without a puff at the end. :\

 

thats just a release of vacume i believe. theres nothing wrong with it. it gets louder with an intake.

 

They all do that.

 

Okay, just making sure. I took off my intake resonator a good two months ago, just making sure it didn't have anything to do with that. Thanks!