Hi guys
I have a 1.8 20v turbo which just feels under powered

It has the AUM engine, which had a proper rebuild and a new turbo last year, engine sounds lovely, car drives real nice but it boosts at what feels like 8psi tops!

This is my first petrol turbo Golf Iv'e had it two weeks.
It had a Forge dv on it and some pathetic excuse of an induction kit

I have purchased a standard air box and fitted that and re fitted the standard re circ valve and re set the actuator using the 3 turn method and it still feels underpowered, you can here the turbo very faintly then a little silent hiss between gear changes with the Forge dv in place!
I know it's standard but surely I should get a little kick, or some torque steer?
Any help what to check greatly appreciated

I plugged it in no faults present, not got vag-com because I run a mac
