hey i need a diagram of how to wire a dpfi to mpfi....ive got a 90 crx and im droppin in a jdm b16a any help is greatly appreciated

 

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 ZC swap:
DX to ZC

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.

ECU PINOUTS:
A01 BRN INJ1 fuel injector control # 1
A02 BLK PG1 Ground
A03 RED INJ2 fuel injector control # 2
A04 BLK PG2 Ground
A05 LT BLU INJ3 fuel injector control # 3
A06 GRN purge cut-off solinoid valve
A07 YEL INJ4 fuel injector control # 4
A08 VTS VTEC solenoid
A09
A10 Pressure Regulator Cutoff Soleno
A11 BLU/YEL IACV from electronic air control valv
A12 GRN/BLK FLR1 fuel pump control
A13 YEL/BLK IGP1 power Input
A14 GRN/BLK FLR2 fuel pump control
A15 YEL/BLK IGP2 power Input
A16 BRN/BLK ground
A17
A18 BLK/RED ground
B01 WHT/GRN VBP Battery Backup
B02
B03 YEL ACC a/c compressor clutch relay cont
B04 FANC
B05 WHT/YEL VTM VTEC pressure switch
B06 GRN/ORN MIL check engine warning light
B07
B08 YEL/GRN ACS a/c on input
B09
B10 ORN CYP P crank sensor (1)
B11 Fuse Box
B12 WHT ? CYP M crank sensor (2)
B13 BLU/WHT starting input
B14 BLU ALT alternator output signal
B15 WHT ? ignition output signal
B16 YEL/RED VSS VSS
B17 WHT ? ignition output signal
B18
B19 KS Knock sensor
B20 BRN SCS ignition timing adjusting connec
C01 BLU/GRN CKP P CYL sensor (1)
C02 BLU/YEL CKP M CYL sensor (2)
C03 ORN/BLU TDC P TDC sensor (1)
C04 WHT/BLU TDC M TDC sensor (2)
C05 RED/YEL IAT intake air temperature sensor
C06 RED/WHT ? ECT coolant temperature sensor
C07 RED/BLU TPS throttle angle sensor
C08 O2S Dual O2 Sensor (JDM)
C09 RED/WHT ? PA atomosphere pressure sensor inpu
C10 GRN/WHT ? BKSW brake light switch
C11 GRN/WHT ? MIL ground
C12 GRN/WHT ? SG2 TPS GND
C13 YEL/WHT VCC1 TPS 5V
C14 SG1 MAP GND
C15 YEL/RED VCC2 MAP 5V
C16 WHT O2S oxygen sensorLets do this, dont skip steps, double check everything,