Guys, the fix is in the thread. I got it too work thanks to the suggestions about loading the beta firmware. It works after that. It's called "absolute pressure" towards the bottom of the live data options (already mentioned).

 

I thought "REL Pressure" is the one that reads the correct boost psi, not absolute pressure. It seems to be the only one that reads out a vacuum too so it has to be the Relative pressure.

 

yea its rel pressure = boost