Originally Posted by Running925
Kai..i believe the PR4 is the 90-91 (obd0) ECU.. which has a different plug than the 94 Civic Does.
SlowRider you are going to need the ECU from the 92-93 Integra (obd1).
The PR4 came in two flavors, OBD-0 and -1. The 92-93 RS/LS/LS-S/GS Integras did use a PR4.