going to obd1
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From: jacksonville, florida, usa
for those who have gone from obd0 (sohc zc 91-crx) to obd1, what was involved? ive heard diffrent things. beside getting the conversion harness and ecu, do you need to get a obd1 dizzy and injectors??
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suck my DX »</TD></TR><TR><TD CLASS="quote">yes the injectors and dizzy must be obd1....</TD></TR></TABLE>
The injectors DO NOT have to be OBDI. You can do the following:
1. Keep the stock resistor box and run the OBD0 injectors (easiest).
2. Remove the resistor box and rewire the plugs for the OBD1 injectors.
For OBDI your need the following:
1. p28 ECU
2. Heated O2 sensor (4-wire)
3. Any 92-00 SOHC Distributor (except the d16z6 one)
4. OBD0-OBDI conversion harness
The injectors DO NOT have to be OBDI. You can do the following:
1. Keep the stock resistor box and run the OBD0 injectors (easiest).
2. Remove the resistor box and rewire the plugs for the OBD1 injectors.
For OBDI your need the following:
1. p28 ECU
2. Heated O2 sensor (4-wire)
3. Any 92-00 SOHC Distributor (except the d16z6 one)
4. OBD0-OBDI conversion harness
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 1point5CRX »</TD></TR><TR><TD CLASS="quote">its nonvtec so ill use the p06, right?
and the 4 wire o2, how do i wire that up with my factory o2 being 1 wire?</TD></TR></TABLE>
the obd1 ecu has the extra pins for the 4 wire o2. so if you get a obd0-obd1 conversion harness it should have extra wires meant for the sensor. you just then wire it in. i got mine from http://www.jkobdconversionharness.com , he was very easy to work with and also the best prices...
Mike
and the 4 wire o2, how do i wire that up with my factory o2 being 1 wire?</TD></TR></TABLE>
the obd1 ecu has the extra pins for the 4 wire o2. so if you get a obd0-obd1 conversion harness it should have extra wires meant for the sensor. you just then wire it in. i got mine from http://www.jkobdconversionharness.com , he was very easy to work with and also the best prices...
Mike
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Or just do it like myself and dr_latino999 did 
2 days worth of work and it runs perfect and I saved myself 100+ bucks!!!
https://honda-tech.com/zerothread?id=1319235

2 days worth of work and it runs perfect and I saved myself 100+ bucks!!!
https://honda-tech.com/zerothread?id=1319235
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Honda CRX / EF Civic (1988 - 1991)
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