Just fitted a new t34.63 on my standard 4x4 cossie as having greens map and chip done Monday problem is there is no boost at all it's still got the standard actuator on at the moment any help out there pleeeeeeeeaaaasse

 

If it's the original actuator it's probably past it's best and is incapable of holding the wastegate shut, hence no boost, you really need a -31.

Martin