My apologies guys... I meant to type decrease psi... Freaking autocorrect on my iPad thinks it knows car ****... Lol damn ai is trying to learn it some **** hahaha
As mentioned before as you reduce restrictions your psi should decrease for the same level of power. This is because you increased the volumetric efficiency of the motor. However, this means you can increase the psi to the old levels and gain more power that you did not have before.
hope that clarifies the confusion...