Indeed they supply the XDi unconfigured, but I have set it (and checked it many times).
I really have gone though the Manual, through all of Clewett's suggestions, Electromotive's too.
I've had 2 people with ignition deign experience visit the car and spend 5 hours going through the basics and experiments.
I have re-configured the whole layout of the system's components, I've examined the sensor's output, the XDi running on an independent 12.7 volt battery.
I sent it to Virginia for testing at Clewett's suggestion, checked out "trouble-free", $100 cost to me.
I have just paid a further $380 for the return of the unit with a new Hall sensor.
I have about $2100 in this and have never seen a spark.
Maybe it will spring into life when i get it back late next week? Not holding my breath....
This is a sketch in plan view of the car and the system layout and proximity to each other.