be carefull on any further tests as im seeing boost figures of just under 3000mbar which is the limit of the map sensor and that much boost is very bad for a standard turbo.first eml log looks to have seen more than 3000mbar as graph tops out flat around 85 seconds)
in the log with vnt when boost rises too high the vnt requested drops to 20% (there is no actual feedback to record what actal position vanes are in)to try to control boost which looks to be overspeeding issue caused be either stuck vnt vanes or mechanism not allowing min spool position to be achieved, especially if boost solenoid has been tested and happy with.
looking at those logs injector 2 looks high at idle a dedicated cleaner like bg244 might be worth a try next time, but first id try removing all the injector plugs and spraying electrical contact cleaner in both halves and work the connectors a few times to ensure a good contact(free again if you have some)
then if you want to persue it personally rather than garage to check vnt, a cheap plastic syringe for pets ive seen for acouple of quid like this
cant guarantee it will pull the required vac (-600mbar ) to pull the arm to the stop screw but it should be able to operate it and really its the other end of the stroke your worried about.
you could always pull the vac pipe off the turbo actuator and plug the hose end to save crap being sucked in and cable tie hose so doesn't catch on floor and rip off, then connect up to log and go for a little blast full throttle again.
if theres any sort of boost over the desired it would suggest vnt is not opening to full min spool position(it will feel totally crap slow and even may sound different in exhaust tone, more deeper tone).
this still needs diagnosing as vanes or actuator though either could restrict movement.
a garage with car on ramp could probably check this pretty quick with a mightyvac or similar, or even removing the actuator securing bolts on the turbine housing and feeling for restrictions of the vanes.
try the syringe from a local pet shop or vets and hose could be windscreen hose or similar if you don't want to wait.
one last thing im not sure those boost spikes low are real ? sometimes there are connection issues and 0 is recorded as ive seen it myself many times in logs. if it did drop even to atmospheric it would be around 980mbar- 1020mbar anyway and not 0.
also in log with 2977mbar boost maf drops as boost rises, maf should be around 1500mg/I but your only 800mg/I or so? still suspect but separate issue, have a check for splits in rubber hose maf to turbo and any pipes that attach to it like breathers and vapour traps, these would bypass maf as it lets air in after maf.
also when you get to this a egr blank would be a good idea just as a test, a fully working egr can still be leaking(especially at pressures you seeing) this might be a bypass of maf via egr valve hence low reading at high boost?
in the egr logs I don't see it opening? its 4% all the time is it mapped out? id expect to see 30-40% opening every few minutes for a minute or so.
just seen a post by tribesman on another forum with low maf issue , if you have swirl flaps its worth checking theyre connected and working properly as if stuck shut that would also possibly restrict airflow and low maf and also by restricting head possibly cause high boost with low maf.
also think of removing inlet to manifold and looking for excess carbon restricting manifold also.