Thanks for thet Pvdub. I've a feeling I need to get the 6v at the coil issue resolved before getting the ECU refurbed. With or without the ECU the voltage at the coil is around 6-8 so the ECU is not causing it. In fact I should have resolved the low voltage before buying a new coil and power resistor but I thought it would be one of those and therefore an easy fix - wrong.... Any ideas on the low voltage at the primary coil?