Running Without Maf

[ALBERTO]

Hi MB friends,
My CLK 430 1998 some days ago showed my a lack of power between 4000 and 6000 Rpm, i ma not used to run the engine at this RPM but i noticed a bad gear change at this RPM.
The car showed code P170 and 173 so .......i decided to clean the MAF, but before connect it again i did a test without and tahe car is running really well, change very smooth and also the lack of power is disappeared...ICREDIBLE.
I think that the ECU has some recovery program or use some default value for timing and air temperature....
Does anyone know more about this function?
I connected again the MAF and the car is running better than before but without MAF is more powerfull.
Many thanks
Alberto