VX Swap Questions
 

Hey folks, I have a 94 Civic DX coupe that I want to throw a VX engine in. I already have a VX trans. What parts will I need for this swap? I'm guessing I'll need the engine, the engine wiring harness, the ECU, and I keep seeing people mention a black box on the firewall. What is the black box for and where does it hook up? If someone could snap a picture of it that would also help with me trying to find one. Also, can I use a Civic EX/Si engine wiring harness? I know I'd have to find a way to make the 5 wire O2 sensor work, but will everything else be ok?

OK, well I'd suggest you download a 92-95 civic HSM(Honda Service Manual) it will be your savior when it comes to the wiring, since my VX got totaled I am swapping the z1 into my Del Sol (check out my intro thread if you want to see how the swap is done, in progress now) I would suggest getting the VX harness with the engine if you can it will help you with wiring, you might be able to get away with the EX/Si harness but that will only solve the Vtec wiring issue, you will also need to wire in the 5 wire O2 and there is a plug for the "Black Box" which is the EGR control box https://www.hondaautomotiveparts.com/...ONTROL+%282%29 it is on the fire wall right behind the intake manifold it has a vac line running to the EGR and to the charcoal canister...it is one of the harder things to find for the swap...worse case you can order it from Honda but it isn't cheap...

If you have any other questions feel free to ask, my motor should be going in to the Sol in the next week or so I hope...at least in my case it looks like I might just have to switch a few pins around at the ECU and at the harness plug on the shock tower so no cutting and hacking needed...