Fuel pump actuator

[JMBT]

I did a lot of monitoring on mine through this ordeal. When I start it up cold at 650Rpm it hovers around 6K. As it starts to warm up, usually around 80 degree oil temp I bump it to a high idle of 850rpm, the pressure comes up to the 8K range. At about 150 degree oil temp and coolant temp to match the commanded fuel pressure locks in at exactly 11936 psi. From this point at any idle speed 650, 850, even 1100, the commanded remains locked on 11936 psi. It must be set that way in the tune I guess. It never drops below that threshold again until I shut the truck off and it cools down again. It does of course increase with throttle application.