hey I have looked for awhile and havent found details I have a 1996 gsr motor going into a 1995 ex coupe...I have a JDM Gsr Ecu OBD 1 and of course the engine is OBD 2 I am converting the engine to OBD 1...So I have to change the alternator,dizzy, and injectors....What I am wondering since it is a JDM ECU does anything change that I have to wire like the IAB and Knock Sensor and any other things on the engine different any help would be appreciated and man I searched hard so dont get annoyed if ya like just look idiot..Thanx

 

Nothing changes with the OBDI JDM P72. Just wire knock and the IAB's if you want them.

 

It would probably be a lot easier (and definately cheaper) to pick up a used '96 - '01 GS-R engine harness. It obviously plugs into the engine, but it also plugs into the civic harness at the shock tower plugs.

 

are you sure that an obd2 engine harness will plug on the obd1 tower harness?? I always thought they were different.

 

Yes

Nope

Note that this only works with a '92 - '95 civic and '94 - '95 integra. If you have anything else the '96 - '01 integra harness wont plug in. If you want some proof check out B18C5-EH2's hatch, '92 hatch, with an OBD2 ITR engine and harness.

 

well that's a good thing to know I wasn't saying anything about it, I was just saying that I thought they were different, but you learn something new everyday..

 

Hey thanx for the reply...yeah that def seems cheaper and do I have to get a jumper harness for the ecu too the obd2 to obd1??

 

no you wont need one should jus unplug your old obd1 and plug in the new one

 

Nope, so long as you're using an OBD1 ECU.

Edit, forgot to add this so i'll add it now.

You will have at least one plug not plugged in, don't worry about. plug the purge solenoid plug into the IAB solenoid and move pin A20 to A17 at the ECU for functioning IABs (secondary butterflies)


Modified by 94EG8 at 12:36 AM 11/17/2008