MB w221 Bosch MED17.7.1 521144 File Info
You can view the file details below.
Hersteller
MB
Serie
w221
Baureihe
Output
544.0PS 400.1kW
StgHersteller
Bosch
StgBaureihe
MED17.7.1
Stgnr_Stg
Stgnr_Her
Software
521144
SoftwareVersion
You can find the chip tuning file you are looking for on "Carecufile.com"