VXDIAG Porsche PIWIS Tester III supports Developer Mode. Here’s tip to enable the engineering mode.
How to switch VXDIAG Porsche PIWIS 3 to Developer Mode?
Go to System->Diagnostic configuration for 991, 981, 918, 970, Cayenne from MY11, Macan
Go to Mode tab
Set Operating Mode to E
and save setting
3 Modes available:
V mode: Standard After-sales Mode for Piwis 3 ordinary diagnostics
E mode: Development Mode for Piwis III engineering software functions
P mode: Production for supplier data information (Customers no need work on P mode)