Ditto on adding some grill block to make the air dam effective. Also you can extend the corners a bit lower, like another inch, Dynamat folded to attach on the front and back side works good and will stiffen it and keep it quiet. It deforms easy with any impact without causing damage to anything else or your main air dam. You can't really move the air from the middle of the car to the sides. The crown of the road is high in the center and limits how low you can go there.. Happy to have the air to the Radiator come from air that would have gone under the car anyhow and block the top of the grill to have that air easily go over the top of the hood
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