i swaped a obd1 motor in to my ef 91 dx hb. if i use obd1 injectors do i have to use the obd1 resistor box as well....?

 

OBD1 injectors are saturated type injectors and do not require a resistor box. If you use OBD0 injectors(peak and Hold) you need a resistor box.

 

my next question is, i have the obd1 motor in and all wired, the injectors (1and4) are shooting but flud the engine to the point that no spark is being given..the 1 and 4 injectors are not turnning off and switching to the 2 and 3 injectors....how do i get around this problem? also if u can find a diagram or instructions that can help with this i would appreciate it.... thank you

 

I notice you got a 91 DX, which is DPFI. 1) Did you convert your engine wire harness from DPFI-MPFI yet? 2) If you did, you should have the "injector resistor box" from a MPFI when you did the conversion swap. 3) What type of ECU are you using? If you're using a OBD0 ECU lets say 88-91 Si ECU, you need the "injector resistor box" which can only control the OBD0 injectors. If you want to use OBD1 injectors, you need convert your ECU harness from OBD0-OBD1.

 

kind of on the same topic, but my setup, i have a 90 crx si and plan on running a d16z6 out of a 94 civic si in my car. I plan on using my crx si intake manifold and obd0 injectors along with the crx si resistor box, with the p28 ecu, and obd0-obd1 conversion harness. Any conflicts using what i have for my setup or should everything work properly with no issues?