The 2FCD ecu has external EDIS and the TAXI ecu has internal EDIS so they aren't interchangeable.

There is a post as to how to convert your loom to use an internal EDIS ecu here http://www.fiestaturbo.com/forums/2-...t-vt130795-35/ by 'Jack The Lad' that I think will work as I believe the pinouts of the 2FCD are the same as the RS1800 this guide was written for.

I don't know if your TAXI ecu will give a PATS problem, if it does you will need to find a DEWY, DEEP or DESK ecu.