I posted this in my build thread, but thought it might be a good reference here.
I got to do a fun project for a statistics and modeling class. A buddy and I used a basic low-pressure gauge to measure relative vacuum and pressure on the top and bottom of my Nine Lives Racing Wing. This is a more interesting except from the larger project, which was mostly assessing about our ability to properly analyze data, with a nod to our ability to justify a position based on available data.
The desired end state of the wing was to generate an aerodynamically-induced understeer bias to reduce the chance of high-speed over rotation, increasing relative safety and driver confidence without sacrificing low-speed yaw rates.
(I got the idea from https://grassrootsmotorsports.com/articles/low-buck-aero-testing/ )
(Note: Given the rudimentary equipment and limited time available for data collection, these results are likely +/- 50%. That said, the published CFD results from 9LR are about 50% higher than ours, so these are probably still on the conservative side!)