2003 Mazda RX8

Electrical problem
2003 Mazda RX8 Two Wheel Drive Manual 90000 miles

Hi I have been told my ECU is not working properly and will need to get it replaced, I have bought a second hand ECU from the USA for my Australian RX8 and would like to know if I can just unplug my old ECU and plug in the new one or do I require some adjustments to be made by Mazda etc.
November 5, 2010.

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