I've just fitted a 2.0 black top out of a t reg mondeo into a l reg fiesta xr2i which was a rite carry on as they are different water pump set ups and I'm having problems with the ecu . i can get it 2 run on the xr2i ecu but not the 2.0 one it wont start . the only thing i can think of is the 2.0 is chip key but i don't av the keys plus my xr2i doesn't av the wiring around the column for the chip key. does any one know a way round this or a way to wire the chip up as i cant run on the xr2i ecu as it under fuels and will cause damage. any help on this will be gratefully received.