It's unleaded here I believe. The best pump gas I can get her in Washington is 92. Most guys appear to add a 5 gal can of race fuel to their tank when they change the tuning for race. A lot apparently has to do with how you have your engine tuned. Some even run 12.5 to 1 on pump gas with the propper tuning.
I just got the Hondata s200 with modified p28 ecu and will try to see what I come up with at the dyno.