RNbuilt

for a ctsc'd 3.2L nsx, which would be the "most reasonable and better" deal?

Top Ramen

OBD2 = FIC.

RNbuilt

so no real advantage with the ems considering the $$$?

Top Ramen

IIRC, the FIC can adjust timing, so I don't think you will see any power difference between the two on a CTSC car. The EMS has a few more features, but not any that are going to add up to more power on that set-up. The FIC has been successfully used to tune some of the OBD2 cars with the LoveFab turbo kit pushing over 500whp, so a blower should be cake.

Hell, I have tuned a couple of blower cars with just a Neo.

Best of luck with your project.