obd0 to obd1 qeustions
Thread Starter
Junior Member
Joined: Sep 2003
Posts: 490
Likes: 0
From: Savannah, GA, USA
obd0 to obd1 qeustions
ok lets see where to start the question there in lies is obviously about obd conversion so lets getr to it. i have a crx and im running a pw0 ecu which is obd0 and i plan on turbo charging my car. i have all the turbo stuff along with a sc61 turbo 
(thought id throw that in), and i wanted to purchase hondatas s200 system but that only works with obd1 ecus. what does the conversion between obd types acually consist of?? i have read enough to know that im going to buy a conversion harness and i need to change from 1 wire o2 to 4 wire o2, but after that im pretty much lost, am i going to need to change out dizzys or will mine be alright, and what about fuel injectors, dont the obd1 cars run high impedance injectors, wouldnt that mean that i would have to remove the resistor box, and are there any other sensors that need to be changed with the conversion.
(thought id throw that in), and i wanted to purchase hondatas s200 system but that only works with obd1 ecus. what does the conversion between obd types acually consist of?? i have read enough to know that im going to buy a conversion harness and i need to change from 1 wire o2 to 4 wire o2, but after that im pretty much lost, am i going to need to change out dizzys or will mine be alright, and what about fuel injectors, dont the obd1 cars run high impedance injectors, wouldnt that mean that i would have to remove the resistor box, and are there any other sensors that need to be changed with the conversion.
Honda-Tech Member
Joined: Dec 2000
Posts: 20,006
Likes: 3
From: Tampa, FL
Re: obd0 to obd1 qeustions (electric_rex)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by electric_rex »</TD></TR><TR><TD CLASS="quote">i have read enough to know that im going to buy a conversion harness and i need to change from 1 wire o2 to 4 wire o2, but after that im pretty much lost, am i going to need to change out dizzys or will mine be alright, and what about fuel injectors, dont the obd1 cars run high impedance injectors, wouldnt that mean that i would have to remove the resistor box, and are there any other sensors that need to be changed with the conversion.</TD></TR></TABLE>
OBD1 ecu, OBD1/2 distributor and 4 wire O2 sensor.....along with the conversion harness. You do not have to change out the injectors. If you choose to run OBD1/2 injectors, you will need to remove the resistor box and solder the 5 wires together at it. As far as the distributor goes, you will either need to repin the distributor plugs or cut them off and solder on the mating plug or make a jumper harness for it. You basically want two of the same plugs. All of the other sensors work w/o needing to be changed. Let me know if I can help out some more. This may interest you.
https://honda-tech.com/zerothread?id=997093
OBD1 ecu, OBD1/2 distributor and 4 wire O2 sensor.....along with the conversion harness. You do not have to change out the injectors. If you choose to run OBD1/2 injectors, you will need to remove the resistor box and solder the 5 wires together at it. As far as the distributor goes, you will either need to repin the distributor plugs or cut them off and solder on the mating plug or make a jumper harness for it. You basically want two of the same plugs. All of the other sensors work w/o needing to be changed. Let me know if I can help out some more. This may interest you.
https://honda-tech.com/zerothread?id=997093
Thread
Thread Starter
Forum
Replies
Last Post
jacoblytle
Engine Management and Tuning
4
Jun 25, 2014 07:56 AM
gocivicgo
Honda CRX / EF Civic (1988 - 1991)
5
Aug 7, 2003 08:05 AM
