Ok, Ive got the motor ready to be pulled(just gotta get a hoist/ d15 motor) and the other motor(d16y7) is ready to be put in however i do have some questions.

BESIDES the dpfi to mpfi wiring is there anythign else I need?

I have the 99 computer but that wont work. Im thinking a 91 Si computer will do the job, no? the car is automatic btw(and the 99 motor aswell).

Is that the only thing I need?(the ecu) or am I missing anything else? sensors that need changing etc?( I wouldnt think so but am not 100% sure)

I only have the d15 dizzy aswell but im guessing it should work fine.


thanks for the help.


Modified by SiRkid at 6:28 PM 9/27/2004


Modified by SiRkid at 6:33 PM 9/27/2004


Modified by SiRkid at 6:36 PM 9/27/2004


Modified by SiRkid at 11:24 PM 10/1/2004

 

ttt.

what ecu shoudl I use???????(auto tranny)

can I keep this motor dpfi?????? just curious.. i want to convert but am wondering if its possible.

 

hello? i have searched and foudn nothing on AUTOMATICs.

can I even get an Si auto computer?

 

The MPFI needs to be done, but you could leave it DPFI. But anygain you have done by adding the D16Y7 will be negated by still running just the dual-point injector setup. You can't use the donor car's computer because of the fact that it is chilling in the land of OBD-2. If you did use it, you would have to run it back down to OBD-1. Preferably, since it is an automatic, look for a PM6 that is made for the auto which would be from the 90-91 Civic EX's; they had the A6 in auto, but the Si's didn't (well to my knowledge). You may need to change up your O2 sensor, depending on the OBD level. The D15 dizzy will only work if you keep the dual-point system. Any questions or did I miss anything?

 

Canadian Civic Si's had the automatic option.

 

Sounds like you got it all, but your O2 thing was confusing so I'll try to clarify for you.
If he used the PS9 ECU (PS9 : 88-91 4 door civic EX Auto with the D16A6 MPFI engine) he could use his stock O2 that came with the DPFI engine.
He would only need to change O2's if he converted to a different OBD system.

Oh - and besides the PS9 there is the Integra auto ECU which might be easier to find and could be used as well, but it may run on the rich side.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4drEF &raquo;</TD></TR><TR><TD CLASS="quote">Sounds like you got it all, but your O2 thing was confusing so I'll try to clarify for you.
If he used the PS9 ECU (PS9 : 88-91 4 door civic EX Auto with the D16A6 MPFI engine) he could use his stock O2 that came with the DPFI engine.
He would only need to change O2's if he converted to a different OBD system.

Oh - and besides the PS9 there is the Integra auto ECU which might be easier to find and could be used as well, but it may run on the rich side.</TD></TR></TABLE>

Thanks for clearing my hyroglyphics

 

sweet! thanks

If canadian ones had it then I might be able to find a computer thatll work. If not I guess an integra ecu is the best bet.


I cant use the stock dizzy when i convert to mpfi?
why is that?

is the ps9 an us only ecu?

thanks again.

 

Well, the stock DPFI distributor is built for just that - dual. The fuel injectors don't really need to know when to fire, since fuel would ~in theory~ reach all the cylinders equally on their intake stroke. Now the MPFI distributor has to tell the computer when each cylinder is at or approaching that stroke, so each individual injector can open up at the right time. And that is the difference in a nutshell.

 

really?
i heard you could use it.
hrmm
I didnt think the injectors got the signal from the dizzy..hrmm


ive located a 90 Si auto computer so ive got that covered.

then ill just need whatever else for the dpfi to mpfi swap. coolness.
thanks again for the help!(and now there will be a post out there regarding automatics )

 

If you convert to MPFI:

You will need an Si/HF distributor.


And you will need the Electrical Plug for the Y7s Radiator Fan Switch. (Located on the thermostat housing. Your old one won't fit)

You will have to remove BOTH crank pullies to switch the engine mount bracket just below the cam.

And you will HAVE TO TRIM the plastic timing belt cover on the new engine to fit your old engine mount bracket.

 

yikes.
what about using the newer transmission?(i have that aswell)

there seems to be quite a difference between the older one and newer one... some diff plugs , mounting holes , speed sensor etc. hrmm. probably stick with the old one although id like to use the new one if possible

 

You can't use the newer transmission without some fabricating due to the fact that it is a hydro and our chassis is a cable sytle activation. So best off stick with the old one to save yourself the hassle of making it work.

 

w3rd!

went to get the ecu. get there and dude says hes not sure it if is auto or not since he never used it.... "crap" i thought. i didnt know the codes in my head so didnt know by looking..

get home and check. pm5.. 88-91 ciivc/crx dx according to http://www.hondata.com/techecuid.html ....wtf. thats probably whats in the car now(havent pulled it yet). so this thing is useless to me.

not a big deal since dude said if it was wrong he would exchange it back(i hope) but the drive to meet up..what a waste of time. i wish people were clear with what they were selling instead of saying its something its not.

full ecu code is 37820-Pm5-X30
*sigh* so i guess my ecu hunt continues

 

90-91 ex ecu is what you need. I have similar setup in 89si hatch. Simple and effective. The si just needs a nice simple turbo setup to be some real fun!

 

cool.
ive been reading around...and am wonder if I can use the 99 dx intake mani?..its basically like the stock 91 but with mpfi. Ive also go the 99 injectors..my guess is i CANT use them since the computers from then cant control saturated injectors, correct? or can I use them? what about using a 92-95 dx/Si dizzy? or does it HAVE to be from 88-91? so i can use Si stuff even though the motor is dx, correct? im tired..sorry for the stupid questions


Modified by SiRkid at 2:11 AM 10/3/2004


Modified by SiRkid at 2:39 AM 10/3/2004

 

Use this as a guide.

http://www.geocities.com/motor....html

 

kind of confusing.

ill have to read it again later.

there is enough info out there for using the Si intake mani etc but what about using the stock 99 dx inake mani? its mpfi but is like the old dx as in the intake comes in from the top etc.
ive got that and figure i shoudl be able to use it but am unsure.
and if i use it will the ecu handle the injectors?(w/ out an injector box)? i would think so but again. am unsure.

 

any thoughts?

i should be able to use the STOCK 99 dx intake mani w/ injectors , RIGHT?(where the throttle body points up)

ive already got it. so theres no point in going with the Si one, correct?

and with those injectors i wouldnt need a resistor box, just the obd2 plugs.

then i would need the Si dizzy and automatic tranny ecu and i should be set, correct?

do i have this right?

it makes sense to me.


and i would have wiring, trimming and that plug etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiRkid &raquo;</TD></TR><TR><TD CLASS="quote">any thoughts?

i should be able to use the STOCK 99 dx intake mani w/ injectors , RIGHT?(where the throttle body points up)

ive already got it. so theres no point in going with the Si one, correct?

and with those injectors i wouldnt need a resistor box, just the obd2 plugs.

then i would need the Si dizzy and automatic tranny ecu and i should be set, correct?

do i have this right?

it makes sense to me.


and i would have wiring, trimming and that plug etc.</TD></TR></TABLE>

Still can't use the OBD-2 injectors on an OBD-0 computer. Different style and electrical configuration. You are going to need OBD-0 injectors for the manifold.

 

You could use 88-89 auto integra ecu(pg7). They are in every junkyard and inexpensive. Might be a little rich for a y7 though. I sure have been notice a lot of local people here lately(kissimmee).

 

really?
i know they are diff style...saturated vs peak and hold .

i did just pick up some injectors and Si dizzy today but still need a damn resistor box and the right ecu. i have an Si mani but will sell it if I can use the 99 one. I think im gonna hit up the junkyard tomorrow

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 4potnick &raquo;</TD></TR><TR><TD CLASS="quote">You could use 88-89 auto integra ecu(pg7). They are in every junkyard and inexpensive. Might be a little rich for a y7 though. I sure have been notice a lot of local people here lately(kissimmee). </TD></TR></TABLE>

Yet I never can find the locals when I'm in a jam

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by dr_latino999 &raquo;</TD></TR><TR><TD CLASS="quote">Yet I never can find the locals when I'm in a jam If you ever need help let me know I can be pretty resourcefull. I don't suppose you know anyone who wants a full zc swap with si tranny?</TD></TR></TABLE>

 

well im going to the junkyard now..according to car parts some places have the right ecu..however they want way to much money...gonna go look anyways.