OM 602.980 Start of injection

Moin, I have installed in my Sprinter 312D (Carthago Mondial 41R, OM602.980) a completely overhauled engine and have a question regarding the values of the injection. According to the documents, the start of the injection should be 1.5 ± 1° kW at a coolant temperature of 80 °C. I have a Gutmann Mega Macs 77 and in the parameters the setpoint value is 0.3 °KW. The actual value of the current engine is between -0.6 °KW and 0.6 °KW. I am not sure if the first engine is running. The engine runs well, starts immediately and does not cause any problems. I hope you can help me. Thank you in advance.