I cut the vents in the bumper for more airflow. I had to put the hood scoop on the car for clearence becaue of the AED with the spacer and the first generation of soild ruber motor mounts put a dent in the factory hood. The second generation motor mounts were 1/4 inch shorter solving the problem. I had to do something about the dents so I decided to put the hood scoop on to hide the dents after I cut the center out for improved clearence. The scoop is not functional. If I had to room to make it work I would.