Its not perfect but then its part of the prototype front bumper lip so I'm not too fussed about that. One of the reasons I wanted to make the bumper lip was to create a flat surface to mount an air splitter to. Its just for show - car really isn't low enough for this to have a drastic effect. Its held on with self tapping screws so a 5 min job to take off. Covered it in 3m carbon vinyl to match the rest of the front end.