I read about this mod on many other forums, its been floating around the net for a while, and seems to be a hit with most of the forums... particularly Audi guys. Its called the HDR Lip, for "Home Depot Racing". The lower lip is actually made out of Garage door seal and attached with 3M tape and a few screws for extra insurance. Cost is about $30 all in and looks factory. I think it makes the car look lowered somewhat, protects the lower edge and is completely removable if you ever change your mind. For more info google HDR lip.