Well, at a little over 70, I managed to cause a retread from a trailer somewhere in front of me on I-275 a 0-70 acceleration time of about .2 seconds. While my bumper and lip spoiler weren't marked with anything a little Goof-off couldn't fix, the black plastic vents right behind the bumper were relatively shattered. I pulled a couple pieces off the following day. Now I'm assuming these are just vents of some sort, to redirect more air to the radiator and such. They're mounted perpendicularly to the bumper. I guess I'm just wanting to hear some comments on what they are and should I be worried, because I haven't noticed in problems since.