NSX NA1 OEM Fuel Pressure Setting?

[Botasky]

I recently had the car smogged and it barely passed with high CO content. The original owner had a FPR installed. The smog tech was saying the car is running a bit rich and reading was about 50PSI. I was wondering what's the OEM fuel pressure setting?

 

[jwmelvin]

Should be ~41 psi at idle if I remember correctly. I'll try to look it up.

Updated: 36-44 at idle; 46-53 with vacuum line removed from the regulator. p.11-88 of the service manual.