I have a 91 CRX JDM B16a, i have a jumper harness for OBD1 ECU, i am running a chipped P28. Will 1st Gen B16a Injectors non OBD work with my set up. I am using stock harness, but i do have OBD1 Distributor and ECU? What is the differences, do they run off different voltage or what?

 

Use the resistor box and obd 0 injectors for now. When you get obd 1 injectors, remove the resistor box. You can run obd 0 injectors with obd1 ecu/dizzy.

 

Allright thanks a lot. Just needed to know for sure if they work or not, a lot of people were telling me they would not work. I do have fuel injector resistor box though. I was running Blue top 450 cc injectors with my turbo, i pulled turbo stuff off, going all motor again. So i just need stock injecotrs for now.

 

you can use the oBD0 injectors. also switching to OBD1 inj will not make it run any better. just more work to do

 

So as long as the injectors fit on the clips of the harness you are using they will work?> Even though i am using hasport jumper harness for OBD1 from non OBD?

 

Swiching the injector clips is optional. The obd 0 plugs will fit on the obd 1 injectors and vice versa.

 

the differnce

obd0 are low resistance injectors they need low voltage so they need the resistor to step the voltage down or else the injectors will fry

obd1 are high resistance injectors and dont need the resistor since they need high voltage in order to operate


correct me if im wrong


-chris

 

So as long as i use fuel injector resistor box i am fine correct? I was running Blue top DSM 450cc injectors, I do not know if they are OBD1 OBD0 or what? I do have a resistor box currently hooked up, NON OBD harness and OBD jumper harness with chipped P28 OBD1 What do you suggest i use?

 

If your injectors require a resistor box, use it. i.e. obd0 injectors and resistor box. If your injectors dont need it, dont use it.

I'm running obd0 injectors on my obd1 b18c1 swap. No problems.

 

sweet that is what i will do then. Thanks for everyones help

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrazyCRxXx &raquo;</TD></TR><TR><TD CLASS="quote">So as long as i use fuel injector resistor box i am fine correct? I was running Blue top DSM 450cc injectors, I do not know if they are OBD1 OBD0 or what? I do have a resistor box currently hooked up, NON OBD harness and OBD jumper harness with chipped P28 OBD1 What do you suggest i use?</TD></TR></TABLE>

no... because you only need injector box when you got obd0 (pre 92)the reason why you use a injector resistor box... so that you dont fry your obd0 injectors... obd1 you dont need
just like





<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ba4 &raquo;</TD></TR><TR><TD CLASS="quote">the differnce
obd0 are low resistance injectors they need low voltage so they need the resistor to step the voltage down or else the injectors will fry

obd1 are high resistance injectors and dont need the resistor since they need high voltage in order to operate


correct me if im wrong


-chris
</TD></TR></TABLE>



i suggest you just use obd1 injectors and run it w/out the resistor box...HTH

 

Ignore everything said above, if you have any questions you can just PM me. You are running a stock Si Wiring harness w/ resistor box. You can put the B16 injectors back in but you'll have to get new injector seals because they are smaller. You need to run OBD-0 injectors. The OBD-1 conversion is done at the ECU and already compensates for all that. Even if you wanted to put a stock b16 ecu back in (PR3) you would still use the OBD-0 injectors.

 

The ecu has nothing to do with what voltage the injectors recive. The injectors are fired by being grounded by the ECU. The injectors are supplied with steady power. 4.5V if the reistor box is being used, or 12V otherwise.

12V for the injectors comes from.. (the main relay?) im not sure. A 12V source. Then it enters the resistor box and is stepped down to 4.5V. Thats all it does.

To run obd1/obd2 injectors just simply remove the reistor box by cutting and soldeirng all the wires that go in it together. Or keep it.

Ecu version dosent matter what verions of injectors you use.

You will need new clips that can be attached however you like to the harness, i soldered them on. Obd1/2 use different style plugs.

-Eric

 

I know what he's talking about because I built that car and hand made that harness (You're not running a hasport conversion harness). I dont know if you got a B16 injectors or who has them now, but they will fit back on that wiring harness. The intake manifold seals were dremeled out to fit the larger 450cc injectors. You will need new lower seals. You will not be able to run the car with the chip that is in it right now. That chip is scaled for 450cc injectors. If you want to get back to what B16's start with I can give you a B16 OBD-0 Distributor, then you could skip the wiring harness I built, and you could just plug in a B16 PR3 ECU. You would have to rewire the O2 sensors back in. Either way you made a mess, your car was fully turbo'd and tuned with a standalone and you took it off because you couldn't get it to idle after a couple weeks. I can not think of a bigger mistake.

 

No, idle was fine. I took off all the turbo set up, because i am all motor kinda guy, more dependable. And running turbo on stock internals is not the smartest thing expesially with 10-12lbs of boost. I can see maybe 7lbs, but 12 was a bit much. I just have to rebuild the motor, build bottom end , lower compression. I work a s a machinist at my uncles machine shop, so i am going to port and polish the heads, shoot em glass beads clean up, rebuild nlock with new rings pistons, sleeves, then i will reinstall the turbo set up. Plus i bought a Skunk2 OBD1 ECU, and i have a set of B16a OBD0 injectors, and GSR manifold, so it was a completely simple whap over back to NA&gt; Whats the big deal and why do you think it was such a big mistake to rebuild my motor for more dependablitly and power? Wiring is a piece of cake, i just did not know what was exactly on this car, since i did just get it resently, and Garrett didnt inform me too much about everything that was done electronically.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CrazyCRxXx &raquo;</TD></TR><TR><TD CLASS="quote">No, idle was fine. I took off all the turbo set up, because i am all motor kinda guy, more dependable. And running turbo on stock internals is not the smartest thing expesially with 10-12lbs of boost. I can see maybe 7lbs, but 12 was a bit much. I just have to rebuild the motor, build bottom end , lower compression. I work a s a machinist at my uncles machine shop, so i am going to port and polish the heads, shoot em glass beads clean up, rebuild nlock with new rings pistons, sleeves, then i will reinstall the turbo set up. Plus i bought a Skunk2 OBD1 ECU, and i have a set of B16a OBD0 injectors, and GSR manifold, so it was a completely simple whap over back to NA&gt; Whats the big deal and why do you think it was such a big mistake to rebuild my motor for more dependablitly and power? Wiring is a piece of cake, i just did not know what was exactly on this car, since i did just get it resently, and Garrett didnt inform me too much about everything that was done electronically.</TD></TR></TABLE>

Where to start, the car was only running 7lbs of boost. I run 10lbs with NO problems, the car was fully tuned and was fully capable of running that boost the way we had the fuel and timing setup. The ECU you had was better than a Skunk2 ECU. A skunk2 ecu is a generic chip, super chips dont work. The GSR manifold is a waste you already have a manifold that flows equally and doesnt have the whole mess of dual butterflys.

 

Damn it is weird that you are so concerned of my car? Do you have a thing for me or something, sorry i am not a homo, GSr Manifold i got for free, as well as the injectors, so it is not a waste. Is it wrong that i need the car to be daily driver. You dont have to drag race every single day of the year, everywhere you go.

 

Very mature, I'm trying to help you out since you obviously obtained a car you know NOTHING about. It's not wrong that you need it to be a daily driver you just aren't willing to listen. Have fun with your 140hp beast and stop trying to sell your IC as a spearco it's a $155 tyrus.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr_CRX &raquo;</TD></TR><TR><TD CLASS="quote">If your injectors require a resistor box, use it. i.e. obd0 injectors and resistor box. If your injectors dont need it, dont use it.

I'm running obd0 injectors on my obd1 b18c1 swap. No problems.</TD></TR></TABLE>

I'm using OBD1 Prelude injectors with my resistor box.. it works because they are peak and hold injectors, which require a resistor box... If the injectors are saturated, a resistor box cannot be used.

 

Go ***** on someone elses thread !