Bloody excellent.
So 1.3 ECU with 1.6 EPROM on a 1.3 top/1.6 bottom hybrid will happily use all the 1.3 sensors, but then the idle and fuelling is correct for the 1.6 block. That's a bonus - I was only expecting it to fix the idle, not the fuelling as well.
Another member has done it first and has been running the engine for months now, so it all seems to be green lights on whether the hybrid ECU is compatible.
Cheers mate, invaluable