just taking a look at this faq https://honda-tech.com/forums/hybrid-engine-swaps-18/complete-obd1-b18c1-into-civic-vx-wiring-instructions-644434/ it shows the wiring of a 95 usdm gsr into a 94 vx for obd1. my question is, is it the same for wiring a 94 gsr b18c1 into a 95 ex (not a si) if not what are the exact wiring updates to make the car compatible to the engine

 

Vtec should be wired already if you have an ex

 

You don't have to worry about the O2 wire because you should already have the 4 wire O2 sensor. Your vtec wires are already ran. You do need to run knock sensor if using a p72 ecu so that link will help you with that and IAB's if your using stock IM.

I just put a 98 gsr in my 94 vx so I only had to repin those two wires in the link and the rest was a drop in deal. I also used a skunk2 pro IM since it came with my swap.

 

face palm moment sorry guys my car is not a ex its a dx so besides running vtec solenoid/pressure switch all i need to do is wire the iab, and knock sensor ? also using a p72 ecu

 

yes sir that's it.