The story: I installed my COBB cat-back last weekend and a day or two later I noticed this faint puttering noise coming from the back of my wagon. I did some snooping around and found that the noise was coming from this mystery part. It seems to be some sort of vent to the outside air? The deep pulsating of the COBB at idle is causing the little rubber vent covers to bang against the plastic and make this faint but noticeable irritating noise.
So, what is this thing? What is its purpose? Would it be a huge mistake to remove the two little rubber flapper/covers that are making the noise?
It is located inside the jack compartment, if you cant tell from the pics.