What's the vent inside our gas filler door?
 

What is the deal on the vent inside our gas filler door, toward the front of the car. Mine occassionaly blows enough air to be audible from the cabin while driving. When its "blowing" I can make it stop by lifting off the throttle.

I recently posted a topic about a whistling sound here (http://986forum.com/forums/boxster-general-discussions/12858-faint-buzz-whistling-sound.html) and on RennTech, but litle luck on typical inciteful comments. Yesterday I finally figured out that this vent is the source of the sound.

Jef

"00 base