[Paparoach]

Got it:

It is important to note that stock systems with a wastegate actuator operated by means of boost pressure do not come equipped with a boost controller. When you have a boost pressure operated actuator, the actuator itself is the mechanism limiting your boost. In essence, the actuator opens your wastegate when boost levels reach the predetermined PSI level. Now in order to get more boost from your turbo system in this sort of set-up, you need to install a boost controller. A boost controller limits the amount of pressure that gets sent to the wastegate actuator. In a sense, it fools it to think that less boost is being created in the system. In turn, it will open the wastegate at higher levels of boost.

Correct?