to run a GTX ECU you will need to find a "Donor" ECU. grab on from a mazda protege and pick it apart. there will be blanks in your stock harness. some of these are filled by the GTX ECU. i'll have to go hunting through my literature to find the 2 wiring diagrams. iirc the GTX and GTR have the same pinout. i have a GTR pin out ... somewhere.... Corksport does have gtx ecu's. also check www.323gtx.co.uk you might get lucky.