Please have a reference of our acuator spring pressure definiation table. Our spring pressure is a full-stroke displacement pressure.
For example, if yours is 1.2 bar it will be initially pushed (start open) at 0.64 bar and fully open at 1.2 bar. If your demand is initial open is 1.2 bar you should choose 2.0 bar spring default setup. Please check the following video to learn how to repalce the spring of kinugawa adjustable actuator.
Now you could adjust it more tightly with preload the rod end as following steps.
1st. Step: Preload
You can preload the actuator rod to get a higher boost pressure. please check the following 2 videos
BTW, Please make sure the manifold and the intercooler pipe that connected with the turbocharger without leak.
2nd Step: Replace it with our Big Head actuator