So an I right in wot I'm saying you have had it mapped with loads of mods on it in Essex.
But you now have more stuff you won't fitting to the car then have it remapped to the new set up .
Can you not fit the parts your self then have a day trip back to the place that did it befor or are you not happy with wot they did to the car befor ?
If you need them to fit all the new parts your going to have to leve the car with them for some time .
Im sorry I don't no much about these focus ST,s but a place by me in Birmingham do
PUMA BUILD and they fit any part and map so it might be worth a trip to Birmingham