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Difference between an OBD 0 and OBD 1 integra ECU?

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Old May 10, 2006 | 07:00 AM
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unknown0001's Avatar
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Default Difference between an OBD 0 and OBD 1 integra ECU?

hey guys I've been searching and can't seem to figure out the following...

is there a difference between an 90-91 obd 0 and 92-93 obd 1 integra ECU?
reason I'm asking is I'm doing a swap into my car with a b18b into a 94 civic, but can't find a 92-93 integra ECU. Would the 90-91 OBD 0 hookup and run properly?

I can get a 95 integra ecu but it's automatic


any ideas?
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Old May 10, 2006 | 07:15 AM
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Default Re: Difference between an OBD 0 and OBD 1 integra ECU? (Mr.RHTuner)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.RHTuner &raquo;</TD></TR><TR><TD CLASS="quote">hey guys I've been searching and can't seem to figure out the following...

is there a difference between an 90-91 obd 0 and 92-93 obd 1 integra ECU?
reason I'm asking is I'm doing a swap into my car with a b18b into a 94 civic, but can't find a 92-93 integra ECU. Would the 90-91 OBD 0 hookup and run properly?

I can get a 95 integra ecu but it's automatic


any ideas?</TD></TR></TABLE>

The only difference is the OBD. The OBD-0 ECU will NOT work with your setup without a lot of wiring. You'd have to wire up or buy an OBD-1 to obd-0 ecu adapter, as well as a OBD-0 Dizzy, and a conversion harness for that. ALso, an obd-0 computer is going to want a 2 wire o2 sensor. The OBD-1 engine has a 4 wire. All the stuff would cost quite a bit. If it were me, I'd find a p75 ECU from a 94-96 LS. It is pretty much the same as a 92-93 ECU. They are the same engine. So any LS ECU from 92-96 will work.
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Old May 10, 2006 | 08:05 AM
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Default Re: Difference between an OBD 0 and OBD 1 integra ECU? (loudassVTEC)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by loudassVTEC &raquo;</TD></TR><TR><TD CLASS="quote">

The only difference is the OBD. The OBD-0 ECU will NOT work with your setup without a lot of wiring. You'd have to wire up or buy an OBD-1 to obd-0 ecu adapter, as well as a OBD-0 Dizzy, and a conversion harness for that. ALso, an obd-0 computer is going to want a 2 wire o2 sensor. The OBD-1 engine has a 4 wire. All the stuff would cost quite a bit. If it were me, I'd find a p75 ECU from a 94-96 LS. It is pretty much the same as a 92-93 ECU. They are the same engine. So any LS ECU from 92-96 will work.</TD></TR></TABLE>


Thanks for the input...that is was I was thinking.
another question tho...so the ECU I need to buy is a P74 pr P75?
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Old May 10, 2006 | 08:25 AM
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Default Re: Difference between an OBD 0 and OBD 1 integra ECU? (Mr.RHTuner)

since your car is a 94, i'd recommend sticking with an obd1 LS computer. Make a "want to buy" thread in the "Wanted" forum. The 92-93 Integra ECU's are pr4's (obd 0 LS ecu's are pr4 as well so be careful). And you can look for the p75 ecu which came out of the 94-95 obd1 integra LS (p75 can be obd2 LS ecu's as well so be careful).

I've seen a few of these ecu's in the classifieds. If I come across another thread, i'll send you the link
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Old May 10, 2006 | 08:31 AM
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Default Re: Difference between an OBD 0 and OBD 1 integra ECU? (iH8RICERZ)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by iH8RICERZ &raquo;</TD></TR><TR><TD CLASS="quote">since your car is a 94, i'd recommend sticking with an obd1 LS computer. Make a "want to buy" thread in the "Wanted" forum. The 92-93 Integra ECU's are pr4's (obd 0 LS ecu's are pr4 as well so be careful). And you can look for the p75 ecu which came out of the 94-95 obd1 integra LS (p75 can be obd2 LS ecu's as well so be careful).

I've seen a few of these ecu's in the classifieds. If I come across another thread, i'll send you the link</TD></TR></TABLE>


Thanks for the information. I've searched and found a few. Just looking for a good price to pick one up
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