wait wait wait wait wait!

std actuator with correct preload will hit about 3-4psi

-31 actuator with correct preload will hit about 7 or 8

-34 about 14

(nb not accurate figures)

the cars acheive higher boost via a boost control device IE an "amal valve/bleed valve"

set the actuator to the CORRECT preload and adjust your boost with your bleed valve.

don't overtension your actuator youll just damage it