I doubt it's an ECU fault, but if the valve is not faulty then and incorrect reading from one of the sensors or an air leak.
You could also try disconnecting the MAP sensor multiplug, in fact if you unplug all the sensors the ECU should drop to LOS.
Disconect, MAP, ECT, IAT, TPS, Rail Temp. Not sure it will even run but it's worth a punt..
This is a non lambda engine isnt it?
Ohh.. And have you touched the timing at all on the cams?
Applying 12V across the ISCV should throw it across ( +12v next to the notch in the plug.
TT
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