The stock ECU tune on the RSX-S is really conservative, it's one of the few small-displacement n/a cars out there that can actually gain a lot of power from an ECU reflash (granted it's a custom one but still).

Slap on i/h/e and K20A5 cams, get the most basic Hondata s100 and have it dyno tuned and the shit's mad fast.

With an intake and a dyno-tuned Hondata you can hit 190 whp.