thanx for the heads up; looks like i need a 99-00 49state ecu in that case... not easy to find it seems! Ebay is FULL of 96-98 year ecus!
I went with the UltraGauge, and MPGuino. Guino to let me know my actual MPG, and Ultra to let me know TPS, engine load, O2 sensor reading, so that i can better tell when i'm in lean burn mode. i'm still very much toying around with it. i will report more once i get better at it.
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2000 Honda Civic HX with mild aero mods
2006 Honda Insight MIMA, FAS, no passenger sideview mirror, race style drivers mirror, front and rear underbody aero, temporary front air dam