How to adjust VNT stop screw ?

[andyyy]

vnt boost is set up in mapping, not by the screw stop! If you can't achieve the boost curve the mapping wants, because it can't close enough - then you start to look at the mechanical side of things (usually for vacuum leaks, rather than a screw which shouldn't be touched by the actuator under running conditions anyway)

Makes me laugh how most people seem to think you set up boost on a vnt like you would with a wastegated turbo

I'm forgot to mention in the first post im using a boost can to control the vnt, so there's no mapping at all, just alot of mechanical adjustments until its all setup right. 

Even if it was mapped the stop screw would need adjusting as the chra has been replaced and they have sent it wound all the way in.