91lsteg

iv done some research, and iv found out that ill need the obd0-obd1 ecu conversion, and dizzy conversion.
can anyone post a pic or layout of the dizzy conversion. or where i may be able 2 find such a pic. i could look around and buy 1 for 30-50bucks but i have a obd1 dizzy clip and a obd0 dizzy clip. any help with this would be great.

as always thanks out there h-t

BiG ChOr!Zo

iTrader: (1)

https://honda-tech.com/forums/honda-crx-ef-civic-1988-1991-3/88-91-crx-ef-civic-frequently-asked-questions-faqs-1508680/

JDMkid413

i just did this today... and works great... on the obd0 wire harness and the obd1 dizzy harness there is only 1 difference... on the obd0 harness there are 2 white wires the bigger white wire goes to the green/yellow... and all other wires are the same you cant mess those up... lol... hope this helps if you need anymore help just send me a txt ill pm my number now and ill see what i can do... and if you didnt already know you will have to convert your injector clips also...

D16SiHatch

he doesn't have to alter the clips if he retains the obd0 injectors

eklum

whats the benifit of doing this ?

D16SiHatch

whatever engine he is using may not have an obd0 ecu that would run it properly. plus converting to obd1 gives you tuning capabilities that are almost non-existant now for non obd platforms.

killakalipoph

i was looking for the same thing obd0-obd1 conversion but for a dx...the FAO has a obd0-obd1 conversion but for si civic/crx..the dx only has 5 wires compare to the 7 wires on the si...any help?

91lsteg

D16SiHatch is correct. the tuning abality will be endless with going to obd1.
i just got this 91 dx hatch. the seafoam green color. it has a b18b1 motor and a b16 cable tranny. runs great, but i have a full turbo set up from my old 96 b16 coupe thats finding a home in this hatch.

the injectors will have to be obd1. (ill have 2 get obd1 clips) any info on the resistor box. i didnt need one on the last set up.

the dizzy will be obd1 (i guess it has to be) so i need the pin out conversion for obd0-obd1 ond the dizzy.

and the ecu since it has the b18b1 in it i dont need to convert mpfi.. so ill just get a conversion harness.

SOUND correct???

mayniak

I'm also curious about this. The FAQ's isn't doin much and wiring isn't my strong point

KNooBz

i swapped a b18b1 into my 89 dx with obd2 injectors and obd2 dizzy running a chipped p28 rywire conversion harness and dpfi to mpfi conversion..i even kept the b18b1 hydro trans, it fit fine

HondaPartsHero

JDMKid can you confirm this chart according to how you did it?

distchart.jpg?t=1269113805

JDMkid413

[QUOTE=HondaPartsHero;42480014]JDMKid can you confirm this chart according to how you did it?

hey like i said man the only wire you have to worry about is the large white one on the obd0 harness... which that chart says it is the ignition input signal.. and the ignition input signal on the obd1 clips are yellow/green... every other wire is the same colors and everything matches up... so this is how it would go

obd0 to obd1
LARGE CLIP
orange to orange
orange/blue to orange/blue
blue/green to blue/green
blue/yellow to blue/yellow
white/blue to white/blue
small white to small white
LARGE white to yellow/green

SMALL CLIP
blue to blue
black/yellow to black/yellow

i would take pics for you but its already done and all taped up...
lmk how things worked out

JDMkid413

as for the resistor box this is what u must do
cut the resistor box clip off and splice the 4 red wires into the one yellow.. so the injectors will get power... you dont need a resistor box with obd1 only with larger injectors...

If anybody else would like some help jus pm me with ur number and ill shoot u a txt... i love to help ppl out... this wiring thing is not hard at all before i did my harness i was scared shitless of it but now i am completly confident and would take on more wiring...

hatchet_honda

obd2 on a b18 swap bahh..obd1 ftw

JDMkid413

yea i would only do obd1 unless i did like a j or k swap...

waynetheguy

Hey everyone, I am new to engine swaps but i am trying to put a 92 civic(d15b7) engine into my 89 civic lx (d15b2) I was wondering if anyone could help me out with the best way to convert my stock obd0 harness to accomidate my obd1 engine. I know i can buy a ecu jumper harness but i dont know what i would actual have to do under the hood. I would appreciate any help that you can offer.

Thank you,
Wayne

91lsteg

ok i have the distrubutor wired up. i do not have a obd0-obd1 conversion harness, but was wondering will the obd0 ecu make the obd1 distributor work????

D16SiHatch

nope. both the dizzy and ecu need to be one or the other.

baysik4o8

hey i have a 91 integra with a 98 b18b motor in it. I need to convert it to obd2 to be able to get it smogged and what not. Would I be able to convert my wiring harness from obd0-obd2?

hatchet_honda

are you trying to run the egr valve or something? the emissions site is gonna test you as obd0 cause of the year of the car, regardless of the motor year

rustanghunter

wow i was just going through the faqs for this info, sweet

stankcrx

i would have to say that after looking around when i did mine rywire.com was the best way to do it... can get all the jumpers needed great tech support and can buy dizzy and computers from them ...not too expensive eithor

219

dpfi to mpfi swap

jdmerda9

Ur best Bet is to hit up mono tech he makes really good harnesses .....very professional

JRZ88DX

I did a obd0 dpfi - obd1 mpfi swap months ago and I wish
Someone had written this out this clearly then. The FAQ needs to be
Updated and links fixed