Ive been trying to figure out the answer to my problem here. Basically I had a brand new td04 installed on my 04 wrx. Using my AP I only saw 7-8psi so after some research I checked for restrictor pill, its there. Checked boost control solenoid, its good. Next step was the actuator arm. Now I don't believe this was touched on initial install so I gave it a couple turns at at time and kept checking. I'm up to 4 turns and now I'm hitting 10psi. should I keep going and see if that does it or should I assume its something else?