Okay first off i have a 05 WRX with agency power header, catless up-pipe, invidia high flow catted down pipe, perrin recirc bov, walbro 255, ngk 2667 plugs.
ive been trying to reach 17 psi with my tuner, ive been e-tuning so he hasnt seen the car. max psi it will run is around 13.5-15 and he said the stock boost controller is turned all the way up and its still not reaching 17 pounds. ive checked all of the vaccum hoses and boost hoses, i replaced a few because they looked old.
still no change, i do not know what is causing this to happen, the turbo spools just fine and holds solid, it will just not reach 17psi.
do you guys have any suggestions to what it may be?