Ax vtr track car immobiliser fault ( Cadwell booked for Monday ) help !

  1. #1
    we have put a mk1 single plug engine loom and ecu into an ax.
    The immobiliser light flashes and won't start, the chip transponder and ecu all came from the same running vehicle and won't work.
    We also bought another saxo to rule out the immobiliser fault ... Works fine on the saxo but not the ax it just flashes.
    We used the unlock ecu trick and didn't get a spark so wouldn't start, something is wrong somewhere.
    Pretty stuck on what else to try, Cadwell is booked for Monday and want to take the ax, is there any faults people can think to check ?

    Thanks !