Got a regal ph1. When i had switchable boost fitted a year ago i had driveabiltiy issues which i expalined to them when i arrived namely lifting on/off accel pedal resulted in car jerking / kicking back. Anyway was told it was the acutator that needed adjusting, which they did and all sorted. However around july time this year it started again and now im sure its not pulling as hard as it was and that the boost is not correct suggesting it needs tweaking again. Who else has to keep tweaking theirs? never had to before i had it done.