i have an obd0 civic i think, i want to put my obd1 integra motor in. i have already bought an integra wire harness and ecu. can i just put that wire harness on when i do the swap? is it that simple?

 

NO, you need a conversion harness. OBD0 to OBD1. You should stick with what the motor & ECU are (OBD1). Try jdmshit.com or boomslang.us for harness. $75-125

 

but i have the complete integra wire harness. the little piece that goes through the fire wall and all. i have to use the obd 0 harness?

 

bump

 

You can use your OBD1 Harness & ECU BUT, there will almost for sure be a couple of plugs in your engine bay that won't plug inot OBD1 harness since your car is originally OBD0.
You'll have to use a wiring diagram and see the plugs are for and either cut them off and just splice into OBD1 harness wires or get the mating plug from your old OBd0 engine and motor. I guess you wouldn't need the conversion harness.

 

the reason i was leaning toward obd1 harness is, when i put this engine in my last civic it was obd2 i bought the conversion harnesses and tried to use the p73. The car like sputtered and died all the time just ran like poo. But i put my old b16 ecu back on the "the p06 or something" the car ran fine. why is that?

 

if this is for your 98 civic u have an obd2a engine harness. i think i saw u said u had an ex so the harness should basically plug into the b series motor. the get a jumper harness. plz more info on car and wut year engine thx

 

This thread is going nowhere, OP, what car do you have exactly??????

 

X2
If you have an OBD0 car then you're in the wrong section anyway.