ECU driving me to drink

Is it the same problem Nikolaus Otto had when he test his engine the 1st time. He then integrated propeller to flywheel, cooling it down and solve the problem.

Since it difficult to order new part, why don't you install a separate electrical fan to cool down the ECU and see how's it going?

funny you should say that , i fitted a heat sink to the under side and cut a hole in the inner guard for it to stick through and fitted a 100mm computer fan over the top of the ecu.
Its not fixed but its better , at least i can turn it off at the petrol station and theres some hope it will start again