| Ivan, it is almost impossible to "just swap the eprom over" and expect it to run correctly, or at least anywhere near the full potential offered by the eprom in question.
To set the fuelling up correctly, I start from the very beginning by setting the throttle sensor, then balance the throttles and then finally balance the CO between the two cylinders using the trimmer on the ecu and the air bleed screws.
The CO meter is the imortant bit. Just balancing the throttles, will not give an equal burning in both cylinders, due to the rear tending to run richer. It usually needs a few tweaks of the air bleed screw to bring it down to the level of the front cylinder. | 
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