It puts downward air pressure onto your rear window keeping it dust free, if you remove it. There will be 4 holes (2on each side of your 3rd brake light)Sorry to Hijack here guys but i have 2 questions.
1. what does this thing do besides look cool?
2. I want to see a pic of it removed- i'm considering removing it from my 99. are there any holes that have to be filled or will the existing bolts do that?
If i decide to remove i will post asap.