prelude9999

i have an H22A4 in a 99 civic cx,

there is no resistor box so i believe i can safely assume that i am running the saturated injectors that originally came with the engine (not peak and hold injectors)

so if i got an obd1 p13 ecu, would my car run properly when the ecu thinks i have different injectors (not only different but smaller)

thanks for any help you can give me!!

fastwanabe

you can run without an injector resistor.

prelude9999

That post tells me nothing (I'm already running without a resistor box, so I already know I can run without a resistor), does anyone have any knowledgable input on this?

prelude9999

if my question isn't clear, let me know

hondaZvic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelude9999 &raquo;</TD></TR><TR><TD CLASS="quote">
so if i got an obd1 p13 ecu, would my car run properly when the ecu thinks i have different injectors (not only different but smaller)
</TD></TR></TABLE>

i think ur question may not be clear.....


but... i will say this. u can use an obd1 p13 without a resistor box and h22a4 injectors.

does that help? if not? clarify ur question please.

93H22ACX

yes....the OBD-I ecu will work fine with the saturated injectors.

prelude9999

Thanks for the help! That is what I needed to know. Though I do have a question now:

if a p13 OBD-1 ecu is designed to be used with peak and hold injectors, how can it work properly with an H22A4 engine that uses saturated injectors? and not only that but the injectors are different sizes

Slopoke

All your ecu does is ground the injectors when its time to fire them.
It has no idea what kind of injectors your using.

The only thing that matters is the injectors themselves.
If your using saturated injecotrs(use 12v) then no resistor box is needed.
If your using peak and hold(use approx 6-8v) then you need the resistor box to remove the extra voltage before it gets to the injector.

prelude9999

nice! that is exactly what i needed to know
you guys are good

hondaZvic

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Slopoke &raquo;</TD></TR><TR><TD CLASS="quote">All your ecu does is ground the injectors when its time to fire them.
It has no idea what kind of injectors your using.

The only thing that matters is the injectors themselves.
If your using saturated injecotrs(use 12v) then no resistor box is needed.
If your using peak and hold(use approx 6-8v) then you need the resistor box to remove the extra voltage before it gets to the injector.</TD></TR></TABLE>


yep he's right. the ecu just basically tells the inj's when to fire.

prelude9999

excellent, do you know the answer to this: ???

https://honda-tech.com/zerothread?id=1027130