Just a thought, there was a thread from one of the guys a while back that spoke of over cranking the engine and it had some sort of electronic safety device which stopped the engine starting.??
Indeed. It's still a new one on me. Will have to cross that bridge when we come to it.But it could be there now after the failed start attempts seemingly with a lot of code readers this fault does not show .
In this instance it sounds like it may have been your own decision to buy the EWS/DME. But there are various cases on forums of people being told they need to spend what is around £2k I think to buy these parts new from BMW to fix their problem only for the problem to return a week later. It's why I always suggest exploring everything you can before parting with money.I had the exact same issue, I brought a new ECU with EWS delete from e-bay (incidentally it was programmed for a few more BHP) but after fitting that, it turned out to be a chaffed wire coming through the bulkhead into the back of the glovebox. So a grommet and a bit of insulating tape fixed it. We traced it to that as we did not have a live in the diagnostic port, as soon as we fed a live it started each time!