V3 aerodynamic rear diffuser, well tested on WTAC winning race cars and GT3 , built to perform.

When a diffuser is used, the air flows into the underbody from the front of the car, accelerates and reduces pressure. There is a suction peak at the transition of the flat bottom and diffuser. This transition is where the lowest pressure generally is located and is called the throat of the diffuser. The diffuser then eases this high velocity air back to normal velocity and also helps fill in the area behind the car making the whole underbody a more efficient downforce producing device by reducing drag on the car. The diffuser also imparts upward momentum to the air which further increases downforce.

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