I just put a K&N into my 2011 Focus 1.6L and I noticed that my airbox doesn't have a hole in the bottom for the silencer that I commonly see in peoples airboxes here.
Such as here http://www.focusfanatics.com/forum/showthread.php?t=256790
Mine looks like this, what is that piece of foam for? Is that a ghetto silencer?
Such as here http://www.focusfanatics.com/forum/showthread.php?t=256790
Mine looks like this, what is that piece of foam for? Is that a ghetto silencer?