well my 240 glt is overboosting ever since i got it, i think someone had messed with the wastegate, i can't even wot or i will hit red and cut out, i always have to keep my eye on the gauge when im accelerating, I am still kind of new to turbos so if someone could please help to tell me how to adjust the wastegate so it doesn't overboost thank you

 

theres not a lot of input on these volvo forums