Hi all
What is the item circled red for? I know it's some sort of air valve/regulator of some sort, but what purpose does it serve? Reason I ask is because there is an annoying clicking sound at idle and I believe it may be this item.
http://img.photobucket.com/albums/v9...8E6B11BF95.jpg
Edit, this is the intake off a tb42e.
Thanks for looking
Andy