Might be reverting those pressure changes soon, for now this is a largely load-independent method to see if someone will come yelling at me and post some data.
They are calibrated to 3000N which is the FZ0 of my tires, so the overall tire behavior should be okay; you just end up with a wrong optimal pressure (= optimal vertical stiffness because my stiffnesses depend on the absolute pressure and construction) and the cold pressures might look funny to some people who know better.
For those unaware, AC has a single fixed optimal pressure per axle, while IRL it varies based on load and camber at least.
NSX NA1 OEM cold pressures on the smaller tires are 33 and 40 (!) PSI. OEM seem to typically aim for cold pressures which are relatively close to optimal pressures for best tire performance in the kind of conditions you'd get on the road. They might be a tad too high for track use where the tire heats up more.
Certainly, with some new data and perspective, an optimal rear pressure of over 40psi might not even be out of the window for the kind of loading the tire is under. The front tire OEM cold inflation pressure of 33psi is not unreasonable either. That's just with load and stiffness, though; it goes out of whack if camber is factored in because I am not terribly sure how camber should be factored in.
I used a somewhat load-dependent method before but the outputs were not always completely reasonable hence why I recently went to this load-independent method to at least have some consistency for the time being. It might change tomorrow or in three months so I'm not sure when I will update for it. There's a reason these are 'semi-official' and not official patches.
For now aim for 32 - 33 psi on both axles. It will likely bias higher in the future.
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