They have a small hole for big exit area, i think the air should expand nicely, without choking.roadie wrote:I don't avow to understand aerodynamics, but the intake under the ramp seems very small compared to the amount of free space there was at the rear of the car before the ramp. The ramp takes up a large footprint in front of the rear wheels on the FW35! Also the ramp intake exit next to the gearbox fattens the famously slim rear end.
Hope it works!