I have found that when the ECU plays up, (usually when the engine does not fire first time in damp conditions) I employ the old faithful computer cure, switch it off (at the red switch) count to five (its a plus 4 after all) and it works fine. Its a very simple fuelling ECU after all, the previous owner 4 years ago had this issue (according to records) and the dealer could find nothing wrong with the ECU.
I now think of it as a quirk rather than a problem, If you don't do a reset it takes ages to get it running,
