after reading much about this problem,i removed turbo from car ,stipped and cleaned it,refitted but was disappointed that there was no improvement to performance,had the car re scanned for fault codes and 17965 was still the problem,repeated removal to double check that vnt ring and lever were making good contact all ok there ,bought a new actuator just to be sure,refitted turbo,same problem still there,read somewhere on this site that map sensor can give same symptoms,got one from vw dealer £45car now back normal .thanks for every post on here as it has heped me fix this problem,anyone who has been told new turbo reqd should chage senor with a known good one first it worked out good for me ,again thanks all who post here....
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