max boost unchipped 10psi, but heard story's of higher and supposed to be std,
your boost 1,bar then drops to o.8, in psi14.50 and 11.6psi, is about right 2.9psi,
but if running higher boost if actuator going soft u would see more of a drop, if u are using the amal valve still, disconnect wiring plug just for a test and see what boost is showing , this is the actuator pressure only,
std about 4psi, and the amal valve bleeds it off (up)

Dave,