Cold idle is around 105 to 115. It stays there for a few minutes then drops to 38 to 40 psi. Once the rpms starts to come up around 2000. The pressure starts to raise too. It will go to around 115 to 125 psi around 6000 rpms. This is what I know with my limited time with the gauge. Now I can see why the 3.7 will blow out the galley gaskets.
I have the warning lights set to 25 psi for low and 135 for high.