losing all faith in this site, lets try one more question, see if any one can help. must get a car going here, so again i have to postpone the b16 i have built, and already droped in a d16 from a 91 si into my 88 hatch. (i bent the frame on the si) now my problem lies in the wiring harness from the fuel injectors etc. wrong number of wires and the colors dont match up. what do i have to do to get the car running?

 

MPFI conversion.

Here are some bare-bones instructions I found on another site. I might try to do a DIY write-up if I have enough spare time. You can pull the injector resistor box and injector plugs from your SI.
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4G DX to ZC wiring conversion
by Kenji Plennert

In order to convert your dual point injection DX to multi-point injection you will need 4 injector plugs, an injector resistor box, extra wire, a wire stripper/cutter, heat shrink and/or electrical tape, and some patience. Also, when doing this conversion I would highly recommend soldering all connections and heat shrinking them. If you do not have access to heat shrink neatly wrapped electrical tape will do just fine. It is also extremely helpful to have an extra multi-point injection engine harness laying around to take plugs from (i.e. injector plugs, injector resistor box plug, and distributor plug). Listed below is a straightforward and easy to follow set of instructions to help you complete your DX to ZC swap:

Inside car at the ECU plug:
• Pins B10 and B12 are empty. Unused pins can be taken from B2 or B11. Some models have a wire located at B12.
• Cut orange and white wires off at C1 and C2 and connect them to wires added at B10 and B12. Orange-B10. White-B12. Leave enough wire for next step.
• Run wires from C1 and C2 (direct ECU connection) into the engine compartment. Label these wires for later use.
• Cut wires at A3 and A7 leaving plenty of wire. Run these wires into the engine compartment and label them for later use.

Outside car
• Transfer DX wiring harness over to ZC engine.
• TPS and EACV plugs are too short and must be extended.
• Be sure to switch green/white and yellow/white wires on TPS

Injectors and injector resistor box
• Connect the yellow/black wires from the two DX injector harnesses and run it to the yellow/black wire on the injector resistor box.
• Connect the yellow wire from the DX injector to the #1 injector (brown wire).
• Connect the red wire from the DX injector and run it to the #3 injector (blue wire).
• Connect the A3 wire to the #2 injector (red wire).
• Connect the A7 wire to the #4 injector (yellow wire).
• Connect the 4 red/black wires from injector resistor box to each injector.
Cylinder position sensor
• Connect C1 to blue/green wire on cylinder position sensor plug.
• Connect C2 to blue/yellow wire on cylinder position sensor plug.

 

I have an ECU pin diagram on my computer, but it died, so I'll try and find another one somewhere online.

 

i knew Kappa would have that. im not up on my 4th gens much.[&:]

 

kappa, not the first time you have come thru for me, thanks alot!! and i do have shrink tubing on hand all the time.. if only my printer wre working... going to have to use pen and paper, damn! well, got work to do...

 

OK, I found a pin diagram. It's not quite as detailed as the one I have, but it should work fine. It's in Microsoft Excel format though...

http://thenew.gamesbbs.com/~dmoore/i...u-pin-outs.xls

 

kappa, hope your still following this one! i have beat my head against the wall for three days on this ... took awhile for me to get spark.. finaly figured out i need to change distributer, and 1 plug, because the tdc sensor is inside... so now i have spark, i have fuel, we are breathing air! but it will not fire, i have double checked fire order and even changed coils to an external, with a clear msd cap, so i can see the spark inside it! i did every step in the instructions... im lost as to what it could be???????????? any sug's
(firing order for d16a6 1342, clockwise, starting at lower left when facing dist)

 

i think i'm f__'d, as far as this motor goes! i didnt think i damaged it when i crashed the si.... it started and sounded o.k. but now im finding water in places it has no bussiness being in! so now i take that motor out, and am forced to install the b16 (oh darn!) which , last week, i already installed new oil and water pumps, hondata intake gasket, thin head gasket, new timing belt, and i installed crane cams. have skunk2 valves, springs and retainers, but will just have to go easy till i can get some cash together again and find someone to install them. this was a total waste of time, i dont want to practice changing engines . maybe this one, ill take some notes and pics...