Boost leak,problem

Hello everyone. Have a little problem with my boost, in my Seat Leon Cupra 240hk with the changed software to approximately 320hk .
I have switched DV, PVC, and o-rings on the outlet of the turbocharger.
See no more leaks. Anyone have any suggestions? it may be the solenoid valve?
The car boost pressure is 0.9 bar .I think it is a bit low for Stage 1. What should the boost pressure to be original?

the software comes from a Swedish company. I live in Sweden so it is a bit far and come and do a leak test

Could it be the solenoid valve that is the fault (N75)? It seems to be very crowded, where it sits .Are anyone have a guide how to change it?