scr warmup

[Mudflap77]

Ok!!!! After a long, painful, irritating, head banging against the wall process I finally figured out my issue. And it was so simple, stupid and frustrating on so many levels.
The big issue, (trumpets) the reman turbo installed came with the WRONG turbo intake temp sensor in it. The culprit was a short probe sensor that was basicly reading the turbo intake house temp and not the flow of air.
There is no turbo intake temp sensor part # in Quickserve. Searching through all sensors you will come across 1 sensor simply labeled temp sensor. looking up that p/n on shop cummins its labeled as oil/coolant sensor. That appears to be the sensor that came in the turbo. The cummins parts guy had to find a parts breakdown for the turbo that only cummins has access to to find the proper p/n.

Since changing that sensor a couple of days ago the motor general only goes into SCR warmup at start up and for a very brief period when idling warm. The motor isn't trying to over produce heat now. Oil and coolant temps are far more stable when driving and pulling a hill.
Turbo pressure is far easier to control with the throttle in SCR warmup, meaning its easier to maintain say 20psi while accelerating whereas before the turbo wanted boost right up.
While in SCR warm the turbo will still boost up to 40psi but no longer chulfs at that higher boost. Agian this only ever happens in SCR warmup.
I don't know if there will be an improvement in fuel mileage yet as I real only had 1 day with a decent load on and it decided to do a regen while i was in some pretty good hills.
Many thanks to this forum and Rawze for trying to help me sort this thing out