I add some new information, I try to make several test on this issue, now I can say that in 99% of case, when car is turned on after a long park, starting with the first gear is a nightmare, engine stai at 1000-1200 rmp and increase RPM at very slow rate, even if I completely kick down the throttle, engine continue to stay at this RPM and slowly speed increase, like when you release the brake pedal and car start slowly moving, seem that there is a small increase of performance if I gently push the throttle at 10-20%, but after a while, when RPM reach 1600-1800 RPM then suddenly power arrive and car accelerate normally.
There is no "lower power", but no RPM!
At lower RPM turbo seem working normally, so I don't expect that wastegate valve is not compleatly closed, or variable geometri is not working, but this an impression.
It's possible to monitor some parameter in ECU to have a comparation with a regular working engine? Any suggestion?
Ah, after a while (I can tell when engine is warm but now in my town we have 34 °C...) then starting is not perfect but not so slow as is when is cold.
So, what is missing, seem for me, is some condition that allow engine to increase RPM for starting and remaining at low RPM during this phase.
Remind that I have changed the gearbox oil... before was normally! Can be related?
