Yeah, the intercooler voids the CARB legality. Not sure why, though. In other states, we don't have to worry about stuff like that.
The kits are 96+, I believe because in '96 integras switched to the OBD-II ecu and emissions system. I hear the kits still work on 94-95's with not too much work, but I don't know what kind of work that is.