You have the manual for the 2013 vehicles, right? Check the PC/ED section, section HN has info on the Turbocharger System, if you can run the tests outlined and verify that wastgate actuator linkage repair was successful. Just a thought, because the only time I saw a 25 psi boost was a momentary phenomenon when Mike was building his Flex.
Don't know how much leeway we have in operation, but I saw this:
HN17 CHECK TURBOCHARGER WASTEGATE ACTUATOR OPERATION
NOTICE: Do not exceed 103.4 kPa (15 psi) of pressure applied to the turbocharger actuators, excessive pressure will damage actuators.