I have a doubt about MAF reading from my original (Bosch 0 280 218 113 on car, but OEM No. is 46559804 from Eper for my car) old MAF and new MAF (Polcar E02-0075).
Readings for airflow with original MAF are here:
Look, any --- MAF is unreliable, shitty piece of hack of a hardware. I can change the MAF readings just by washing the MAF sensor, and the readings will be much higher for several days until the oil vapor from the engine fouls it and the values drop. Next, your actual air flow depends on many factors, oil condition, turbo state and fouling, air filter age, actual EGR flow, outside air temperature and absolute pressure, and a million viariables inside the ECU.
None ECU critical systems should ever depend on MAF readings, and especially not in an open-loop control.