By cutting out u mean going into limp mode? Does it go fine till 3000rpm, as in accelerates well and then dies or it goes like crap and then dies? :).

To me it sounds like overboost problem. If it is overboost problem the fault lies in electromagnetic valve at the bulkhead, left one with grey connector. What i would try if i were u, i would disconnect the tube leading to turbo from the valve. Rubber thingie, it leads somewhere behind the engine (other tube is leading to brake cylinder). Dont disconnct the connector though. When u disconnect it, take it for a ride. The car should be sluggish but if it doesnt cut out on 3000rps u found ur fault!

The reason for that is that is the emv isnt working properly, as in letting vacuum through all the time, the wastegate is allways closed shich results in overboost. By disconnecting the rubber tube u make sure the wastegate actuator isnt getting vacuum and therefore it allways stays open and overboost cant happen.

Edited by Brlja on 10/02/2011 at 16:11