Cummins ISX400, can`t install OEM ECM calibration!

[andreisana4]

Hello everyone,
I have a problem with my truck, I have a 2005 Volvo with the cummins isx400 engine. I bought it recently and I realize that the engine has a non original ECM and calibration on board(Different Part Number and ESN), this calibration is set to squeeze from engine 565 hp and has a different cpl which is 8518 compare to original cpl 8520.
The engine seemed to run smooth, but, no long time after I purchased it one of the cylinder`s head valve brake and get out in intake. I rebuild the engine, put a new head on and after 40k miles head gasket problem come on again...
I think the problem is the wrong ECM calibration version. When I try to install the right calibration, following ESN quickserve suggestion, In cummins insite I get a error (ECM part number not match to selected calibration), then I use Calterm to Download to ECM the OEM calibration, after is done, truck dash board send me errors (check engine ecu and check light control module), in INSITE Fault code 0132 or PID 91 FMI 4 SPN 91(Accelerator Pedal Position Sensor Circuit - shorted low. Low voltage detected at accelerator pedal position signal circuit.)

What I do wrong , should I switch any wire from ECM with place? Please help to figure this out! A Big Thank You in advance!