Hello Jord!
I am reading this post day by day and since you are having lots of trouble with the ECU, is there a special reason why you didn´t fiitted an Engine Management System(Fuel Tech, Megasquirt)??
Hope you tackle this problems before Donnington!
Best regards
(sorry for mi s**tty english)
In hindsight I should have fitted an aftermarket ECU from the start and it would have saved a lot of hassle...
Buuuuuttt I didnt and dont see the point now when im going to be breaking it at the end of the year to start something new!