How can I check what the pressure will be before I install the actuators again? hand pressure pump or something?

 

Will the boost pressure be the same as when using the pump? lets say the actuator arm starts to move at 8 psi, is 8psi the pressure I will get when driving?

Right assuming they are the stock ones....

 

A pressure of 7psi will begin the opening procedure. Stock boost is 9psi, there is a tiny restrictor in place that reduces the pressure the actuator sees, exactly the same principal as boost jets. This tricks the actuator into thinking 9psi is 7psi and so on and so forth.

 

To test your actuator simply apply 7psi to the actuator and it should open. This is obviously significantly more obvious on the bench than in situee. Any pump will do as it's such a short run small diameter tube. You'd have bloody strong lungs to make more than 3psi. They should work the same regardless of the airs source.

 

Why do you want to check? Do you suspect their faulty?

not faulty, just need to have as low boost as possible. Need to down tune the car and turbos (GT600R) to get as close to 286hp as possible.

 

I have a hand pump with out and in on with pressure gauge on.

 

I had 0.85 bar boost when driving before I startet. Testet on one side after turning the rod 8 times but still it began to move at around 0.7-0.8 bar.. Will that be the same pressure when driving?

I don't see why not. Whatever it opened at is what it will open at, your going to struggle to limit yourself to 280 ho on those tubs. A huge boost leak so they never open would likely do it lol.