hi Patrik,
thats great thankyou for the video.
so the max is about 10,000 rpm, the compresor has a max rpm of 14000...... so that makes me wonder if those that had the tdi pulley fitted is the unit operating over the max rpm??? did tdi even look into this, i doubt it TBH.....
also your other video - something is wrong with that compressor unit - it should not make the grinding noise - it tells me the lobes are rubbing against the casing - not good at all.
Patrik if you remove the outlet cone/pipe then you can clearly see the lobes and also the casing and see if they have been rubbing against each other.
If the lobes are rubbing it normally indicates the compressor has operated at very high temperatures and the case has distorted - normally as a result of being driven over the 14000 rpm
Also I believe it helps to move the air temperature sensor to the throttle body inlet as that is the "true" temperature rather than measuring the colder air at the inlet of the compressor..but i may be wrong.