teg91

it says cut the white and orand but theres more than one withe and orange wtf

Anubis_4_99

this is the part of the swap where guessing and luck comes in

or you could go online and search i found a killer site a while back that had a great walk through, my computer crashed and i lost it though

Zeniceguycrx

While its off:

I would then extend the throttle position sensor(TPS) plug about 8 inches making sure that you switch the wires per the wiring instructions. Also extend the EACV plug wires about 5 inches. Another wiring change to do is adding the appropriate wires for the injectors now. The wiring instructions come in handy here as well. You will be glad you did this before you installed the manifold. I know from experience.

Then install the new manifold and reconnect the hoses and vacuum lines and connections.

You then need to finish up the wiring.

Wiring Instructions:

4G Dx to Si wiring conversion
by kenji modifyed by C_Rexboy

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, heatshrink and/or electrical tape, and some patience. Also, when doing this conversion I would highly recommend soldering all connections and heatshrinking them. If you do not have access to heatshrink 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 Si manifold swap.

Inside car @ ECU

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.

Before installing manifold

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.

These wires are off the si distributor so connect them there.

Thats it. Double check everything and start it up. Good luck!