Opel Astra SiemensContinental Simtek90 according to my KWP2000 55559287 O400051000000 File Info
You can view the file details below.
Hersteller
Opel
Serie
Astra
Baureihe
Output
125.0PS 91.9kW
StgHersteller
SiemensContinental
StgBaureihe
Simtek90 according to my KWP2000
Stgnr_Stg
Stgnr_Her
55559287
Software
O400051000000
SoftwareVersion
You can find the chip tuning file you are looking for on "Carecufile.com"