i hope mine is not down to a dodgey turbo.. it cost me enough from turbo technics.. mine is using air injectors.. i have tried having hardly any preload on the actuator with it only just under tension then a quarter of a hole then half a hole and it made no difference to the boost level 23 psi no matter what i do to it... i was told by a tuner that tightening the actuator will raise the boost but does not do a thing on mine.. not sure if its worth buying a -34 just to try and get more boost or is it a waste of 80 quid...