| Steve, injection ECU doesn't give a dam which engine is in the bike, all it cares about is having Suitable impeadance injectors, suitable TPS, suitable engine pick-up, suitable air temp sensor, suitable engine temp sensor, suitable MAP Sensor (some ECUs do this differently), Suitable harness and correct resitance coils.
Then its just a matter of having a fuel and ignition program loaded into the ECU or EPROM (possibly aided by a PC3) to suit the choosen engine
So I would suggest a 748 EPROM if using a 1.6M ecu as the engine uses the same stroke as a 620, I would also go with ST2 or 750/900ie green injector throttle bodies and TPS, the latter is the same TPS as used on 748Rs so works with a 1.6M ECU
And in answer to your email, yes I still have a 620 engine available
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