i just bought my b18 swap and need help with the wiring. i have a dx wiring harness and was told if i send both harness to hasport they could convert it. but my friend has his si harness and is willing to sell it to me. now would it be better to use his harness would it just wire up or not?

 

so what nobody wants to help?

 

Easiest way to do this is to reuse your stock dx engine harness and take plugs from the si harness only. Contact http://www.rywire.com if you want to get it done somewhere.

 

I don't know if I would recommend rywire, at least if you don't want to re-ittereate 4-5 times that its a dpfi to mpfi swap. My friend, who's a GM guy and knows little about hondas, recently got a crx and bought a rywire ecu harness to go from obd0/dpfi to obd1/mpfi for a DX. Even after speifying that in the email twice, they sent him the mpfi version, and he was **** up a creek last night.

Anywyas, I would not recommend paying an ***-load to convert your dx harness. Its VERY easy. You just need to switch the two injector plugs over to the obd1 type, get obd1 injectors (or a resistor box if you have obd0 injectors), add the wires for the 3rd/4th injectors, add in the new dizzy sensor/move old sensor pins, and swap the outter tps pins.

Most of the pages detailing the conversion use the same text, so just search around.

 

USE your stock dx harness your b18 harness has plugs on the wrong side of the car... all you have to do is wire you injectors from right to left, 1 to a1, 2 to a3, 3 to a5, 4 to a7. then you have to cut your c1 and c2 and run a wire from pin c1 through the fire wall and connect it to it should a blue/green wire, do the same thing from c2 but connect it to blue/yellow.. after that the wires that were cut from c1 and c2 you want to run the old wire from c1 and hook it into pin b10 and the same thing with c2 to b12 ... after all this you want to run a red/black wire from your resistor to each of your injectors in any order, they all do the same thing for each injector. Also on the old DX harness you have to injector plugs, cut them closent to the plug as you can, one yellow/black and the other is black/yellow. You will then want to attach the two you cut off the injectors to each other. Then attach the two attached wires to the yellow/black wire coming off the resistor

http://hybrid.honda-perf.org/t...g.htm
Ignore the dx to zc its just a dpfi to mpfi wiring diagram.

 

if you end up needing plugs or pins hit me up and I'll see what I can do