So, got the car back, it drives better, the induction sound is clearly audible, it was not previously.
Full service has been done, the fuel filter was not really dirty but was changed anyway, as the sparks, belt, oilfilter and oil.
Fuel 98 oct is used.
Apperantly there are no pressure leaks, took the car to a mechanic who had also a turbo, he also has a full Milltek which he doesn't want to sell but that aside.
He said the car did well (-and that his hart is bleeding-) although the engine did a little odd at 4000 RPM, he suspects the double sided OEM rubber pipe leading from the airbox to the mouth of the turbo is not collapsing,
the power drop would much more different, and the control light would light up.
The next thing for me I guess is a Dyno run at 10' from here. That in two weeks, its costs 55 £,
So there is time to perform the things as stated in replies above.
Keep you posted and thank you
