Hmmm...between the front bumper and the front wheels, way low on body, and existing on both sides of car, there are louvers, that have a rod to open them up. Rectangular shape, several 'flaps' on each one. Cannot see any associated 'plumbing' to the devices. You can view them without jacking up the car ( from under the engine, not from street-side). So, anyone know what they are for? When do they open?

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