92-95 intake mpfi swap few questions..

[Kven]

You can run 92-95 injectors and do away with the resistor box.

[1990civicdxhb]

Originally Posted by Kven

You can run 92-95 injectors and do away with the resistor box.

ok,so heres where we run into this:

can I run obd1 injectors (92-95) with a 0bd0 ecu (pm6) with or without resistor box!!!
I have read & read all about this,plus I do have the 0bd1 injectors right here,
but I was brought to the attention of using 0bd0 injectors with resistor box,
if using obd1 injectors I had to convert to obd1 harness+ecu,
but I read this:
http://www.automotiveforums.com/vbul...d.php?t=173362

that says I could just throw in the obd1 injectors with no resistor box & obdo pm6 ecu,some say use the resistor box with obd1 injectors,,,but....
heres what I'm wanting to do:

obd1 intake
obd1 injectors
obdo wiring harness
obdo ecu
obdo dizzy
w/no injector resistor box..

is this possible?

also,1 more thing,
if I was not going to use a resistor box,where would the wires go (from fuel injectors) that would have went to the resistor box,(yellow/black)

so I'm actually all 0bd1,except for my si dizzy & wiring harness....
92 block,94 head,92-95 intake

thanks alot to anyone helping me out,
because over the past week,I've spent alot of money & time into doing this.

[Kven]

Yep, very possible. The only issue *might* be the injector clip; but if they're included with the obd1 manifold, just simply de-pin them and swap them over(you just need a small precision flathead screwdriver to do this).

Reason why you don't need a resistor box is simple:

OBD1 injector=~13ohms
OBD0 injector=~3ohms
OBD0 injuector+resistor box=~13ohm

If you don't use a resistor box but keep the obd0 wiring, just connect all the injector (+) wires to the yellow/black wire on the engine bay connector.

[1990civicdxhb]

sorry for getting you to do all that info,but after doing some research myself,
I really just think I'm going to stay with the obdo (peak & hold) injectors,
& stay with the injector resistor box,
(just because the swaps everywhere & has been done & works)
I havent seen an exact swap info page on what I was trying to do,
so its not a big deal,all I need is obdo injectors,easy find.
but 1 last thing if anyone would know this,

will a 91 accord ex resistor box work? (they said it would)
it comes with the harness plug,so I'm wanting it pretty bad.

I know this threads went a little ways,but I'm trying to clear everything up on paper/computer,so I've got everything & everything can work right.
so far this is all the info I need.
thanks

[bambam89lx]

Originally Posted by 1990civicdxhb

sorry for getting you to do all that info,but after doing some research myself,
I really just think I'm going to stay with the obdo (peak & hold) injectors,
& stay with the injector resistor box,
(just because the swaps everywhere & has been done & works)
I havent seen an exact swap info page on what I was trying to do,
so its not a big deal,all I need is obdo injectors,easy find.
but 1 last thing if anyone would know this,

will a 91 accord ex resistor box work? (they said it would)
it comes with the harness plug,so I'm wanting it pretty bad.

I know this threads went a little ways,but I'm trying to clear everything up on paper/computer,so I've got everything & everything can work right.
so far this is all the info I need.
thanks

Yes, you can use the accord resistor box. All it is, is a box with 4 6 ohm resistors in it. That doesn't change no matter what honda you get the resistor box from. You could actually just get 6 ohm resistors from radioshack and wire them inline, it would be the same damn thing.

Now for the injectors.

using obd0- you will take the two yellow w/ black stripe wires that go to the stock dpfi injector clips and cut them, solder them together. Then, you will solder those two wires to the yellow/blk wire that goes into the resistor box. All that is, is 12 volts going into the resistor box. Then, for the new four injectors, you will take the red/blk wires from each injector clip, and solder them to the red/blk wires that go into the resistor box. It doesn't matter which one you solder to which red/blk wire, because they are all seeing 6 ohms of resistance. Peak and hold injectors need this resistance to operate properly. So, basically the 12 volts comes from the ecu, then it goes thru the resistor box, where it goes thru a 6 ohm resistor, then it goes to the injector.
If using OBD0 injectors, you must use the obd0 injector clips.

Now, if you want to use saturated injectors (most obd1/2).
It's the same exact thing, except the injectors don't need the resistance, so you don't wire in the resistor box. You just take the four power wires (for obd1/2 injectors they are yellow/blk instead of red/blk) and just solder them in one big group to the two yellow/blk wires that originally went to the stock dpfi injectors. Done. Now, you are sending straight 12 volts to the injectors, instead of having that 12 volts first travel through 6 ohm resistors, and then to the injectors like the obd0 peak and hold injectors. For obd1 injectors however, you must solder on the obd1 injector clips instead of the obd0 injector clips.

If you need any additional wiring tips, let me know, as I've done this wiring conversion nearly 60 times. I work at a local import shop and I do all the wiring for engine swaps, as well as all the engine building.

Also, you didn't get back to me about the manifold/ecu/tb combo. I also have injectors and injector clips if you need them. Let me know what a fair price for you is on any of this stuff, and that's what I'll sell it to you for.

-bambam

[1990civicdxhb]

wow,
you seriously hooked me up with info,
I'm on lunch right now from work,
I get off at 4:00 & I'll write ya then
I think the obd1 injectors is my chioce,seems easier.
write back later

[1990civicdxhb]

ok,no matter what I'm going with obd1 injectors because I already have them,
I now understand what I have to do when hooking up the injectors,(instead of the resistor box)no website I could find would give that example,

but anyways,I can still use the pm6 with this obd1 injector setup?

thats all I need to know,
thanks alot bam for helping me out,
also,I just went up to the junkyard today & got the tb/intake,bracket,hoses + the 180 degree hose,all the sensor plugs & a 4 wire plug2plug for detaching the 4 wires from the ecu on the harness,
the reason I wanted to just go up there & get that is so I would know that I had everything I needed,bracket,hoses,.....
but I paid 70$ for it & you was offering 50$ with shipping,so I'll be honest you gave me a better deal,but I also wanted to make sure I had everything for it,
I got the pm6 off of someone here on AF,but I havent got it yet,but sure i will
thanks again for helping me out.

btw,do you have an si distributor?
(I''ve got one coming,but a spares always a good thing.)

[bambam89lx]

Originally Posted by 1990civicdxhb

ok,no matter what I'm going with obd1 injectors because I already have them,
I now understand what I have to do when hooking up the injectors,(instead of the resistor box)no website I could find would give that example,

but anyways,I can still use the pm6 with this obd1 injector setup?

thats all I need to know,
thanks alot bam for helping me out,
also,I just went up to the junkyard today & got the tb/intake,bracket,hoses + the 180 degree hose,all the sensor plugs & a 4 wire plug2plug for detaching the 4 wires from the ecu on the harness,
the reason I wanted to just go up there & get that is so I would know that I had everything I needed,bracket,hoses,.....
but I paid 70$ for it & you was offering 50$ with shipping,so I'll be honest you gave me a better deal,but I also wanted to make sure I had everything for it,
I got the pm6 off of someone here on AF,but I havent got it yet,but sure i will
thanks again for helping me out.

btw,do you have an si distributor?
(I''ve got one coming,but a spares always a good thing.)

yah, i got a few of those si disributors laying around. $75 each shipped.
As for the ecu, all ecu's are the same when it comes to the injectors. You can run obd1 injectors on an obd0 ecu and vise versa no problem. But, you cant run saturated (most obd1/2) injectors w/ resistors.