i have a b16a2 in an 89 civic hb, the old owner had the engine (obd2) done up with the original 89 civic wire harness(obd0) so the computer now is obd0 and i want to change it to obd1 what all needs to be changed? i was told just the distributor,computer(obd1)and get an obd0 to obd1 piggyback harness.is that really all and if not,can someone help me out? thanks

 

ya, you do need a obd1 dizzy, and a 4 wire o2(if the ecu looks for it)

 

Also, the obd1 ecu looks for a knock sensor. You can install one into your block, but if its a b16a2 it should already have one. Just run the wire to the jumper harness once you buy it, or you could chip your ecu to not use the knock sensor