thegreatwhitehope

is this the same as a dx to zc conversion?
not sure if I should go ahead and do the zc conversion to my b16 with the addition of a vtec sub harness.

tiresmoke

these are my simplified instuctions less cutting and soldering.


Installing a B16A into 88-91 DX

Wiring

Converting DPFI to MPFI

Unpin C1 à repin B10
Unpin C2 à repin B12
Unpin B2 cut add wire to go to the BLU-GRN wire on cyl position sensor then repin C1
Unpin B11 cut add wire to go to the BLU-YEL wire on cyl position sensor then repin C2
Cut A3 and add wire run it to #2 injector (RED wire)
Cut A7 and add wire run it to #4 injector (YEL wire)
Connect the YEL-BLK wire from the DX injector harness to the YEL-BLK wire on the injector resistor box.
Connect the YEL wire from the DX injector to the #1 injector (BRN wire)
Connect the RED wire from the DX injector to the #3 injector (BLU wire)
Connect the 4RED-BLK wires from injector resistor box to each injector


The car is now MPFI

Setting up the Vtec

A8 add wire for Vtec Solenoid valve GRN-YEL
B5 cut add wire for the Vtec pressure switch BLU-BLK wire
B19 add wire for Knock sensor RED-BLU
C8 cut add wire for second O2 sensor WHT (green plug)

The TPS has to be extended about 10”
The IACV has to be extended about 5"
The distributer plug has to be un pined from the Dx square plug and repined to the B16 round plug. (do this one wire at a time, matching the wires correctly.) There should be 2 extra wires left on the B16 round plug these are for the wires coming from ECU pins C1 and C2.

thegreatwhitehope

damn it tiresmoke, you are a freaking guinness. thanks pal.

tiresmoke

B-REX there is one plug from the Dx harness that does not get plugged in it just hangs there. it gets unplugged from the back of the throttle body on the Dx.
Also Be sure to switch green/white and yellow/white wires on TPS.
later Ben