2048kg/h MAF Sensor Switch
When your engine setup needs measuring mass airflows higher than 1024kg/h you have to modify the program code of your ECU.
Modifiying program code is dangerous and should only be done by people who knows how to recover a bricked ECU.
You have two options to change the MAF limit:
Second way is to apply the patch manually with a HEX editor.
Therefor you have to change the bytes listed below according to the software version from "4E" (1024kg/h) to "3E" (2048kg/h) and set the conversion factor in the TunerPro MAF table to "0.03125*X"
Either way you have to recalculate the program code checksums inside the 512kByte file even if you use files with deactivated checksums for the calibration area. MS4X Flasher does this automatically.