If it is anything like the spoon ECU made for the Legend, all it did was eliminate the JDM factory speed limiter and raise the rev limiter - disturbingly to 9000RPM (legend stock limiter was 6900). No changes were made to the ignition or fuel tables at all. I can't speak directly for the ECU you have, but since the ECU's are sisters I would assume the same modifications were done.
I see the chip is sitting on a riser, any chance of some close up pictures of it? I assume it may be some type of descrambler. Is it hard soldered to the board or is the board still socketed?