I had a feeling that the Volvo wasn’t making enough power and when I tested the wastegate actuator, it felt loose and sloppy.
Checking the turbogauge showed me that I was running on 0.3 – 0.35 BAR max, whilst it needs to make 0.5 bar aka 7-8 PSI.
I decided to order a new wastegate actuator from Mambatek which is a direct replacement.
It took a little bit more effort than expected, but I was able to get it done and the results are there. The turbo is able to boost to 0.5 BAR aka 7-8 PSI again. Result!