I have a b18a out of a 90 integra that I'm planning on swapping into my 91 standard hatchback. I have the option of buying a totalled crx si for about 200 bucks (not sure on the year, it's 88-91) and a friend told me that the engine wire harness will connect to my car and to the b18, and that I could use that ecu. There are a few other minor things that I want off of the car, but the main thing I want is the wire harness, so that I don't have to rewire anything.

Can anyone tell me whether or not that wire harness and computer will work in my swap, or would I still have to rewire it?

Thanks in advance for any information.

 

is your current car dual point or multi-point fuel injected?

 

my hatchback is dual point, I want to change it to mpfi in as few steps as possible in order to install the b18, if I can just plug up the SI harness to the B18 and plug the ECU in then that will be easier than having to cut/solder under the dash and under the hood. I'm up for rewiring, but I'd rather not if I don't have to.

 

Just to let anyone know who has easy access to an entire wire harness... the under dash wiring is actually pretty easy to get out if you have a little patience, and we've converted a CRX HF wiring to SI wiring in about 2 hours, the only thing is that you want to use a crx wiring harness for a crx and a HB harness for a HB... the only differences were the door harness which had to be cut off and also one connecter on the steering wheel which we didn't really care to figure out, since we had a crx SI one handy (we had a civic SI one first)

So, it really is a valid option to just swap harnesses if you have access to an SI and don't feel like cutting/splicing (although, like I told my friend, it's all electrons flowing through copper, either way works)