Talk Morgan Forums Morgan Sports Cars Maintenance & Servicing 2014 plus 4 engine cutting out

Very sorry to hear this Dave. I do agree you have to be firm. I would suggest you ask them to lend you another Morgan to use -- that may concentrate their minds a bit on getting it fixed. Alternatively, if they have a another new GDI Plus 4 in the showroom just tell them to substitute the ECU with yours.
cheers