The car is my94 uk turbo. The car was peaking at 14psi and dropping back to about 12psi from what i read i take it this is about right.Now for some reason the car is peaking and holding just 10psi.I have cleaned boost solenoid and reset the ecu filled up with super unleaded and went for a test but still no change.Any one with ideas to what could have caused this.Thanks in advance