I have two RAM 500, both of them ran fine, but there are some things that needed to be concerned:

on ECU version number CO3 -
higher gas values means less gas at rampup, both my rams have a value op approx 35.
lower glowplug value means higher voltage - for OS F or OS 8 glow plug that uses a standard voltage, the value should be between 120 to 90 (when 120 is low power for the plug)
if you are using the original fuel pump, a start PW of approx 80 sounds right, you should have an indication for the amount of fuel when starting up, PW too high will result a shutdowm due to high temperature.

as turnnburn wrote, the sequence is quite simple and easy to follow, things to look at:
the ECU will ramp the turbine on the gas up to approx 22K-24K, if you cant reach these RPM numbers, you dont have enough gas.
if the RPM drops from 24K to below 20K, your start PW is too low.
if the RPM rise but the turbine shuts down due to high temperature, your start PW is too high.
if you continuously burning glowplugs, your glowplug value is too high (low number) and need to be lowered (increasing the glowplug value)

other things need to be consider as well -
the RAM500 fuel needles are very thin and gets blocked easily, DO NOT run the engine without a proper filter at the fuel input of the turbine.
I use two filters, one at the input of the pump (between the UAT and the pump) and one at the output of the pump.
this insures a clean fuel line running to the turbine and keeping the needles clean.

if you have any other questions, i would gladly help.