My local OPC have told me doing any mod's to my car will invalidate the manufacturers warranty? I don't think this is correct as the car is 2016, I get if something goes wrong connected to my mod it won't be covered maybe they mixed up with t&c of the extended warranty
Plenty of threads on wtty invalid if you don't have Porsche branded battery on n-rated tyres. So actual modifications in a complete no-no if you want to be able to use the wtty in years 2-3. Manufacturers gtee in year 1 is covered by block exemption. But do you want to risk it?