The amal valve is live and it has been changed for a new item a couple of years ago. The ISCV has been changed so has the charge air temp sensor and the coolant temp sensor. It hits about 0.7 then drops off to below 0.6. All ford information i have read say it should be 0.8. This was proved when put on the rolling road as it only produced 185 BHP and the boost readings were the same on their gear as on mine.

I have disconnected the amal before and set the boost pressure on the actuator and it was able to hold it there and the car felt loads quicker.

Other than being down on power and messing about with starting it runs perfectly. It has only done 71k. Head gasket was done a couple of years ago (about 1500 miles ago) and all compressions are about 155psi. The car is kept in a climate controlled garage with other cars so couldn't ask for anymore. It's just annoying me alot now.

Any other ideas?

Cheers

Matt