Today I tested the max boost at WOT and it sit at 11,17 psi (0,77 bar). I still have to fiddle with PolarFIS Adv. to give me a good value for the specified boost. It was much easier to set that parameter on my unit in the diesel Golf.
Maybe I have to look into the Measuring Block that gives that parameter and ask the support tech from Auto Polar if they're choosing the right one.