Seems the piece of the engine loom with these 3 items has an issue effecting the current, have made a new temporary loom with Direct power through a relay when FP is running, this has now solved the operation of the WUR heater and all pressures are behaving as they should!
However, this has not solved the problem... again car started fine but as it warmed up began running rough and not idling... I'm now really getting frustrated with this car!
So, another email to Tony to get me back on track with some direction... he suggested testing AAV and AAR after I have smoke tested the system. Previously I had been using the soapy bubbles low pressure testing.... so I rigged up a Vape with tube into the side of airbox and up through sensor plate with the Air cleaner wrapped in a plastic bag... few puffs down the tube and I had smoke flowing out the edge of CIS Intake boot just above the clamp, closer inspection and it was torn.!
This would definitely give me some unmetered air!....
Will try and source a new Boot locally tomorrow, if not order from our Hosts...
Fingers crossed there is not another issue!