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Look here: Allscanner VXDIAG VCX DoIP Porsche Tester PIWIS 3 vehicle coverage

Compatibility:

Porsche from year 2005 to 2018, including post-2017 vehicles with DoIP protocol
Porsche 911(997) (991)
Boxster/Cayman (987)
Cayenne up to MY 2010
Cayenne from MY 2011
Panamera

Especially the latest models:
Paramera (971) 2018
Caynenne (92A) 2018
Macan (95B) 2018
911 (991) 2018
and other old models

Porsche PIWIS III Model Selection:
*Some other models can be selected only by connecting device with vehicle.
911:
992
992 Campaign
991
997
996
996 GT2
996 GT3
993, 964

Boxster:
982
981
987
986

Cayman:
982
981
987

Cayenne:
9YA
9YA Campaign
92A
9PA

Panamera:
971
970

Macan:
Macan

918 Spyder:

918 Spyder

Racing cars:
935
991 GT2 RS Clubsport
982 Cayman GT4 Clubsport
981 Cayman GT4 Clubsport

Miscellaneous:
Carrera GT
GT1
968
944
928

External components:

Porsche Piwis 3 Software:

Piwis III 38.300.030 – confirmed to work no issues
Diagnostic test: passed
Coding: passed
Programming: passed

VXDIAG Porsche Piwis 3 Instruction:
– Porsche Piwis 3 diagnosis + car list
– Porsche Piwis 3 Engineering
– Porsche Piwis 3 wiring diagram
– Porsche Piwis 3 remote help

https://www.obd2tool.com/blog/2019/10/19/allscanner-vxdiag-vcx-doip-porsche-tester-piwis-3-car-list/