Originally Posted by IslandBwoy

Depending on what you are considering planted or too planted. If the rear of the car is not rotating as well as you would like you can play with the position of the wing. Move it closer to the front of the car and the car should rotate a bit easier. As well, move it back and the rear of the car should feel a little slower coming around. As far as modifications to the actual wing however you have little options as the wing is usually teched and should be certain width and no higher than a particular hight. You may be able to shim the wing up or down but you will have to stay within regulation, so be sure the inquire with your track officials.

~ Jedi