The bonnet scoop, apart from helping cool the engine, helps reduce lift. As does the aluminium under tray that runs the length of the car. The rear wing creates 66lbs of downforce at 124Mph (I don't know if that's a lot as far as downforce goes) and the little knobbly bits on the roof are vortex generators that assist with airflow over the rear wing. The side skirts also assist. I think it's touted as a negative lift package. I don't know if that's another word for downforce but there it is.
Regardless, I love the car. It is awesome