I have heard either way. I know that there is a CARB EO number for the 92-95 civic intercooler kit and I was told that it is transferable to the Integra. I have to get smog by Sept 10, so we will see, once and for all, what the law on that really is.
Greddy is the only company I know that makes "smog legal" intercoolers for Hondas. Any other intercooler is definitely illegal.