I've just freshened up the motor in my T25 ready for the camping season and on checking everything on a road test, i've noticed the boost is very low (around 3 psi). The turbo is in excellent condition and I have blocked the blow off valve, but will turning the adjustment screw in (clockwise) on the wastegate give me a little more? I have turned the max fuel screw in a touch so that i get a small amount of black smoke through the rev range too.
Cheers all