you cant increase boost too high as your actuator is set up to hold the max boost u need only and with pipe connected can only get lower not higher....im not very good at explaining this might help...this is how i did it to run 26 psi peak dropping to 23 psi held but is same adjustment technique for any setting


1-remove actuator pipe and set actuator at 1mm preload,then run at full boost and record result
2-wind in actuator rod 1/2 a turn at a time and run under load until the boost held is 26 psi...you now know that your actuator will hold 26 psi and not be forced open by exhaust pressure
3-replace actuator to amal pipe and when i run again boost held had dropped to 17 psi
4-i then put 1mm restrictor in amal outlet to actuator and run again,boost was still 26 psi held which meant not enough pressure was going through restrictor to open actuator.
5-drilled restrictor to 1.5mm and run.... boost went to 26 psi then dropped to 24psi held
6-drilled restrictor to 2mm and run....boost went to 26psi then dropped to 23psi held....job done

i would like stu to come on here and comment on above technique...i see it as failsafe as actuator will only just hold the max boost you require before exhaust pressure opens wastegate,therefore if actuator pipe split or come off you know you cannot overboost

mark