Put the fuel injectors in from an RS2000 and that will give you some driveability back untill you can sort it properly - the injectors on the 2.3 are slightly larger cc wise and with the RS2000 ECU expecting smaller injectors for smaller engine capacity as per the map, it fires as per the rs2000 and not the Granada injectors.

Its only a temp fix but it will help a bit for the time being.....