Both the 1996 Integra and the 1993 Civic have similar engines but different ECU hardware. Making things more interesting; each one has a tuned EPROM, the Civic’s being of completely unknown origin.

[P1kachu] owns a pair of early 1990’s Honda’s with custom tuning on their stock ECUs, and after having to get the ECU repaired on his ’93 civic, he found himself going down the rabbit hole ...

mounted on the floor at the center of the dashboard On the fifth and sixth generations of the Honda Civic, the ECU is found behind the kick panel in the footwell on the front passenger's side.