last few weeks its been playing up again intermittently, only at high speeds though but this time its not POSITIVE BOOST but NEGATIVE BOOST it comes up with this fault;
1 Fault Found:
17964 - Charge Pressure Control: Negative Deviation
P1556 - 35-10 - - - Intermittent
on the wiki the only thing left is the VNT vanes but before i get the the turbo removed i want to be sure that its the vanes. i do have vagcom but dont know how to properly test the actuator rod or do the graph thing etc etc. want to cancel out all possibilities
![Confused :???:](./images/smilies/icon_confused.gif)
could someone please help me out with this .
TIA