balisticRc

I agree with changing the numbers on the injectors on the write up.... buuuut I just followed this this past weekend and car fired up purfectly first time, this isn't my first swap but had been 7 years since last one. Props to ya!

CaliforniaBear

I <3 u... No homo

Nooch

I failed.

tonythetuner®

Thanks ever one hope the this helps people out yea I agree I I did number the the injectors rong. The wire colors are right but the number order is rong. Injector 4 should be 1 and injector 1 should be 4. And thanks. For fixing it up a lil. Nooch

crxguy406

Ok, I need to shoot out a really noob question. How do I tell for sure if my injectors are obd0 or obd1? I'm 90% sure that the motor I bought is out of an 88-91 honda of some kind, but I don't know if thats a guarantee? Also, would there be a way to make sure it hasn't been previously converted or anything like that?

Charlie Moua

iTrader: (3)

nice and simple...


+A for the effort & that i can save it as an image... lol

253 Built

Awesome write up bro, i have read a lot of write-ups on DPFI-MPFI and they all have confused me, this one seems very simple and straight forward, just printed it off and gonna try it either tonight or tomorrow and will let you know how it goes.

CRXGUY406, what motor is in your car at the moment? If it was out of a 88-91 it will be OBD0.

jxh_28

POST ACTUAL PICS OF DPFI TO MPFI.

Getownit

Great post man.

Ken99287

Very nice! I have a few questions!

If I want to run obd0 with obd1 injectors (to eliminate the resistor box thingy), do I just wire up the injectors obd1 style but use the obd0 dizzy and harness?

Another question - are all the stock obd1 injectors the same? I have injectors from a d15b7, will they work with any d motor (obd1 or wired to run obd1 injectors)?

mr.dsm

just what i needed!

JHJams

I have the same issue going on, I am obd0 mpfi now thanks to this write up. I too have injectors from a spare obd1 d15b7 harness and wanted to run the obd1 injectors. Do I just simple run the wires the same but into obd1 injectors and then run the 4 yellow/black obd1 wires from each injector into one wire and solder to my A15 pin?. That portion was sort of blurry?.

Fo-Do Fanatic

Now if only someone would buy my multiport swap so they can put this thread to use!

JHJams

so where do the 2 wires on the second small circle clip go?. I thought those go to c1/c2? if c1/c2 go into the larger clip then how does this work im confused?.

osoriodavidjdm

ok quick question got a bit lost
are u suppose to change the pinout on the stock
obd0 dpfi ecu or i also need a obd0 mpfi ecu?

crxsirg

You guys do realize that you can just remove the dpfi injector wires entirely and use the ones off the MPFI harness. All you gotta do is de-pin the old ones and plug in the new ones. It's a little more complicated in that you have to follow the wires and make sure you know which goes where but doing it that way eliminates all the cutting and soldering for the injectors. I did it this way and had no problems.

jdmb18b1flip

Do you have to de pin & re.pin tried.parts in the edu if you have a jumper harness

jdmb18b1flip

So to run the yellow wire to a15 do I justcut.the.wireandr run my other wires.to it

freddy chavez

Can i use my stock crx si engine harness?trying to get my dx multipoint but its jist a shell so no engine or engine dx harness came with it.and im pulling my d16a6 from my rusty crx si.

Canadian_EF

You can, but it's easier to use the harness that matches your chassis.

freddy chavez

How hard is it if i use the si engine harness?cus everything seems to plug rith in?so im a bit confused:///

Canadian_EF

It plugs in but nothing will work.

Not a fun experience to use the Si harness.

freddy chavez

Also im using my si ecu,do i have to do the depin on the diagram still?

Reaper_Ramone

Great write up. I just did the swap on my 90 Civic hatch. The only thing I ran into was that when I was done I started the car and white smoke was pouring out the back and my idle was all over the place. Turns out the bracket under the DPFI intake was holding my MPFI intake up enough so the bottom of the intake wasn't seating against the head. I removed the bracket and everything was ok from there on. Another issue I had was with hose routing, mainly on the cooling side in relation to the IACV valve. If looking from the back of the manifold there are 2 tubes at the bottom of the IACV. The one on the left goes into the intake manifold nipple just below and to the left of the IACV. The nipple on the right gets a hose that goes to the coolant tube that goes into the water neck. And if any of you are looking for the hoses for the swap hondapartsdeals has them in stock and they don't cost an arm and a leg and are a proper fit, unlike the ones from auto parts stores. Thanks again!

miravete

iTrader: (1)

this might be a dumb question, but I couldnt find the answer....even if it bit me...

so, I'm assuming you can use the dpfi engine harness?? That way it still connects to the dpfi car harness, right?

I would just need to swap out the plug for the distributor so the Si distributor plugs into the dpfi harness?

and lastly, i would just need two more injector plugs right?