Too much fuel?

Da1andonlyJinxDa1andonlyJinx Wagonist
in Engine & Drivetrain
Okay guys, I got a 90 civic wagon and I'm going from DPFI to MPFI
1.5 D15B2 w/ 5 speed trans. Everything is stock.

My question is how rich do you think its going to run?

Let me explain,
I used an engine harness off of a obd-0 DA for my parts that I'm going to need to do my DPFI to MPFI. Dizzy plugs, injector plugs and the resistor box, well since I'm using the DA injector plugs now I'm going to have to use the injectors as well, unless there is another smaller duty cycle injector that is peak and hold and will fit with my injector plugs.

Also I'm going to be using a PR4 OBD-0 ECU only because I couldn't source out a PM6 one.

And last but not least I'm using the throttle body off of the DA as well, mated up to a Z6 Intake manifold.

How rich would you say its gonna be?

If its to bad I'll just have to source out the other parts I need in order to allow it to burn the fuel more efficiently.

Give me some feed back.

Comments

  • bam-bambam-bam Council Member
    I don't know the answer to your rich question, but I do have a spare pm6, injectors/harness/ resistor from an '89 rt wagon. I was hoarding for spares for my swap, but I don't think I'll need them. Don't have the throttle body, but that shouldn't make much difference.
    As far as the injector plugs, I think any of the obd0 would fit.
    Sorry, didn't know you were looking.. I thought I saw you were looking for later model dseries stuff?
  • Da1andonlyJinxDa1andonlyJinx Wagonist
    bam-bam wrote:
    I don't know the answer to your rich question, but I do have a spare pm6, injectors/harness/ resistor from an '89 rt wagon. I was hoarding for spares for my swap, but I don't think I'll need them. Don't have the throttle body, but that shouldn't make much difference.
    As far as the injector plugs, I think any of the obd0 would fit.
    Sorry, didn't know you were looking.. I thought I *seen that* you were looking for later model dseries stuff?

    Well I was going to go OBD-1 but i figured i could do the DPFI to MPFI on my own with low cost until i could get the funds up to do the obd-1 swap. I got it all together but I'm having issues.

    it'll rev up slowly to 3k and after that it boggs real bad and almost shuts off. I'm taking a break from it right now so I wont get too stressed out about it.
  • evol911evol911 familEE
    I was going to use a PR4 with my ZC swap but after asking around I found that the PR4 will run noticeably richer. What that means to performance, don't know. I was going to use it until I got a good tune on the car becasue I figure richer is better than leaning the engine out. Also heard the PR4 has weird maps that aren't really performance minded. I would go with the PM6, PR4 isn't going to hurt your car but the PM6 would "run" better.
  • bam-bambam-bam Council Member
    Da1andonlyJinx wrote:
    bam-bam wrote:
    I don't know the answer to your rich question, but I do have a spare pm6, injectors/harness/ resistor from an '89 rt wagon. I was hoarding for spares for my swap, but I don't think I'll need them. Don't have the throttle body, but that shouldn't make much difference.
    As far as the injector plugs, I think any of the obd0 would fit.
    Sorry, didn't know you were looking.. I thought I *seen that* you were looking for later model dseries stuff?

    Well I was going to go OBD-1 but i figured i could do the DPFI to MPFI on my own with low cost until i could get the funds up to do the obd-1 swap. I got it all together but I'm having issues.

    it'll rev up slowly to 3k and after that it boggs real bad and almost shuts off. I'm taking a break from it right now so I wont get too stressed out about it.

    double check reversed TPS?
  • lucskywalkerlucskywalker Wagonist
    evol911 wrote:
    I was going to use a PR4 with my ZC swap but after asking around I found that the PR4 will run noticeably richer. What that means to performance, don't know. I was going to use it until I got a good tune on the car becasue I figure richer is better than leaning the engine out. Also heard the PR4 has weird maps that aren't really performance minded. I would go with the PM6, PR4 isn't going to hurt your car but the PM6 would "run" better.

    well if it helps i will add, im running obd1 b16 injectors with obd0 ecu -the resistor box. i do have a fuel pressure regulator with gage and running 43 idle psi and goes up to 51 psi on the revs, i dont smell any signs of excess fuel and my wide band reads 14.9-14.3 at a cruse, when i floor the peddle it goes up to and holds around 13.2-12.7 its pretty normal as factory ecu's run very rich from the factory, so in the end i say even the b16 injectors arnt big enough to flood out your motor. and also ive heard it time and time again those arnt the right injectors your going to burn out the ecu or the injectors. well ive done it many times and for years at a time and still the ecu and the injectors are just fine. if the injectors need a resistor box use one if they dont, dont use one.
    but anyway i know your combo will not be crazy rich or any thing, but i also know that pr4 ecu sucks on d-series motors.
    hope this helps, a little anyways :wink:
  • Da1andonlyJinxDa1andonlyJinx Wagonist
    yeah, that was one of the first things.[TPS] I'll get a PM6 ecu soon.
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