Ok so I got me a swap and when I went to wire it there is all kinds of question on how to make this work with using my EF harness.Some say I have to re-pin the wiring on the ecu and cut plug from dpfi and hard wire the round mpfi plug in,etc,etc.I want to know what the right way to do this swap,based on the EF harness.Can anyone please tell me what i need to do to get my car back on the road.This is the first time I have ever done a swap and i know i will enjoy it when its done,but i want to get it done.Help please,

 

your best bet is to use teh engine harness that matches your car and mod it to fit the new engine.

 

They cover what you need to know at the beginning im pretty sure.

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/detailed-b-series-into-crx-ef-civic-parts-list-more-2769325/

 

Have you converted to mpfi to start with?

 

it really is a piece of cake...im 18 y.o, doing my first swap (b16a2 into obd0 91 ef hatch) doing it all by myself.

listen to what people say on here ok?
you have to MODIFY(keyword) your ORIGINAL HARNESS(another key word)

you cannot go buy one and simply plug it in......honda made that **** hard for us.

if your car is Dual point (two injectors) you have to ADD and WIRE in two more injectors.

easiest thing to do is go out and find a DA integra harness from the junkyard. i have used almost every ounce of wire and plugs from it as possible to keep my harness clean.

you also need to buy a OBD0 to 0bd1 ECU jumper, and dizzy adapters

if you want i will be able to talk you through it and show you picstures that i have used myself.

 

Depending on the year of your b18a1

 

whoops. thanks for catching that

 

no problem bro haha

 

its out of a 90 DA.I found a web-site(honda-swap.com).It broke down step by step on a dpfi to mpfi.It was really indept on what to from re-pinning c1,c2 into b10,b12,to running new lines out of the c1,c2 into the bay.adding a injector resistor,cutting square plug of and adding THE ROUND mpfi plugg in.Then someone else said they wired it into their harness and it works fine.just want to do it right.

 

Just keep it obd0 and run the 90-91 ecu its easier and you can always do th econversion harness later.

 

You got the jist of it. However if you use obd1 injectors or any equivalent you do not need the resistor box. The box is only for low impedance injectors only. I used one of my dizzy adapters and I cut off one of my old dizzy plugs and wiring in the obd1 plug. Either way there are sensors on the ls that arnet on the stock d series. So just keep reading and do lots of research. Because its not going to be plug and play. Don't listen to that guy above

 

Just make sure you keep everything the obd that you decide to go with. If you start mixing things around chances are its going to run like crap and it will make things 200 times harder for you.

 

100000000000x's


honestly i would just go ahead and convert to obd1. its easier and your options for motors is more open.

 

Agreed obd1 is where its at