After looking at the 918 Cayman gt4 MR, I have seen the underbody aero. Manthey racing and Porsche will sell you the aero parts but it’s 250 dollars. What does the underbody aero do?
According to Manthey:- Guide air out from underneath the car
- Avoid to get air in from the side of the car
The first point is probably clear, the second one means that by creating a “air curtain” underneath the side skirt will avoid “dirty” air to get under the car from outside.
The aero could be more complex with getting the angles and the placement as well. However I have made a prototype with paper and duct tape and have someone that is measuring the MR fins to get the length close. I will keep y’all posted, but if y’all have any comments to add or suggestions let me know.
The aero on a gt4 soon below: