The
WR Mazda gulps all its cooling air from two very large inlets at the front
of the car. The air is ducted through the car to coolers located
in the sidepods. 
The
WR has a channel that allows air, taken in at the front, to flow out filling
in the low pressure area created by the cockpit surround and side-view
mirrors.
The
rear wing is near maximum height with small endplates. The diffuser is
to maximum legal width and has multiple strakes in the section.