Hello, I hope I can be of assistance.
You say you changed the boost sensor and boost control valve is this correct? Have you the facility to check live data in the engine management?
Let me know and I'll reply to you as soon as I'm able to.
if you can check the pressure reading from the MAP sensor with the ignition on but the engine not running and also when you rev the engine.
Also have you the chassis number of the van? If not is the turbo vane actuator vacuum or electronically actuated?
is there any chance of the readings in bar? Just to confirm them as I don't use kPa, I've tried a converter and if this is correct either the data been read is incorrect or I'm surprised the van runs at all. Does the van start OK?
Ok no problem, I'll reply on Monday as soon as I can.
any joy with the readings yet?
Ok, no problem.