I can see you do have a reflash for the F22C engines (US 2006-07 S2000).
In Italy as you may know... we do have a F20C (2000cc) version of the S2000 (year 2006-07) with VSA.
The ECU part number is: 37820-PCX-G12 (see below pics).


Do you think it is possible to apply your REFLASH or install a K-Pro ??
Let me know if you are working on a solution.
Thanks, Carlo