5psi

I have just been down to visit relatives for the day, and on the way back, just after a good bit of spirited driving on the motorway, it started only boosting to 5psi and will not rise any further. No lights on the dash for miles and miles of it doing it, then when very near home the Engine...

Just took my car to a private road to stretch it legs as never done it before. Anyway just got up to a respectable speed in 5th when all of a sudden the car stops accelerating and boost gauge dropped from 15psi to 5 psi. Now the car will not pull above 5 psi in any gear. The oil temp never...