Its the correct chip, but i would email and ask for more specific details on the chips current map. the majority of XR2i's are 1.6 CVH 8 valves, but there are a limited number of the 1.8 16V Zetecs (same engine as the RS1800).

Id say it was the right map if hes listing it for RS1800's aswell but its always best to ask rather than assume