Haven't tried anything Pete. I just haven't driven it. That's an easy test to do though. I believe it's a hot join in the coil pack loom as I have deleted the standard igniter and running an aftermarket one. Now with the moving around of that loom It might have buggered one connection. That will now be redone with a plug. On the dyno it's at exactly the same point, on the road it changes with load, gear and ambient temp. Fkn shit thing.