CM2350 factory file comparrisons...

[Matrix2613]

Hello, I found this site after some Google searching and I am impressed by the plethora of information available.

I am looking for an ecm calibration code, currently have a 400 hp/1650 tq engine and would want to compare a 450/1750 file or a 475/1750 or so. I believe that this Truck can handle up to a 500 file without hard part changes, but I don't want to get to the point where we are sacrificing fuel economy/reliability for power. Truck is an old JB hunt truck with 370k miles on a CM2350A ecm. (x15 efficiency)

All the emissions are intact, just want a little more grunt to maintain speeds.

My guys don't go faster than 65-70 but loosing speeds on even small hills is a bummer, especially since I frequently do OSOW.
Info from Cummins parts-
Marketing Model Name X15 400SA
Service Model Name X15 CM2350 X114B
CPL # 4342
ECM Code HD10313

But will confirm the file currently on the Truck this week when it comes back from otr
Thanks!!