Nope, The ECU is actually on my mates RS turbo.

The engine was rebuilt over the winter and the dash changed, the ECU wasn't touched internally.

Its this pin 10 that gets me. On the wiring diagram i looked at, it shows 12v to both sides of the coil? Thats whats confusing me? It works fine if one side of the coil is earthed? However the wiring hasn't changed so it muust have worked like this before hand?