B18b Obd-1 To Obd-2
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Joined: May 2007
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B18b Obd-1 To Obd-2
i have a 1995 acura integra with a b18b
i found out a 1999 acura integra motor, my friend will install it.
the only problem i found out is that the engine is OBD-2. so what do i need to do to install an OBD-2 Engine in a 1995 OBD-1 setup ( ECU etc... ).
i can buy any other parts, but first, can i fit in that engine OBD-2 in an OBD-1 car, i mean idont care about the sensors just want it to work good
anyone knows ?!
i found out a 1999 acura integra motor, my friend will install it.
the only problem i found out is that the engine is OBD-2. so what do i need to do to install an OBD-2 Engine in a 1995 OBD-1 setup ( ECU etc... ).
i can buy any other parts, but first, can i fit in that engine OBD-2 in an OBD-1 car, i mean idont care about the sensors just want it to work good
anyone knows ?!
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Joined: Sep 2006
Posts: 201
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From: Idaho
Well since my car is an 00' and originally OBD2, I would assume you would just need a OBD2 to OBD1 Conversion Harness for the ECU...But I could be wrong, although when I did my OBD1 conversion from OBD2, I swapped the Injector Clips and ECU for OBD1 and bought the Conversion Harness. And it runs great!
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Joined: Jul 2004
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From: A forum with actual tech
There are a fair amount of differences in the wiring. The easiest way would be to use an OBD2a engine harness.
Give this article a read. I know it is meant for a 92-95 Civic having an OBD2 motor swapped in, but there is some decent information.
And I am going to move this to Engine Swaps, where it belongs.
Senior Member
Joined: May 2002
Posts: 268
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From: MI
Use an OBD1 P72 ecu, it will run the OBD2 motor just fine. The differences are actually very minor, with OBD2 simply having more sensors but when you are using the OBD1 ecu it doesn't look for those sensors so no need to worry about them. You do not need a conversion harness with an OBD1 ecu. So don't use an OBD2 ecu, that's what I'm getting at.
Mainly the differences are:
1. crank fluctuation sensor
2. secondary O2 sensor
Neither of these are used with OBD1 and can be ignored. The other main difference is the plug style of the injectors. You can swap plugs to OBD2 style, or just swap to OBD1 injectors and keep stock plugs.
It is no big deal putting OBD2 into an older car unless you try to also run the OBD2 computer. Use a computer of the same vintage as your car and there are few hassles. Also the engine will fit fine, externally all the mounts are the same.
Mainly the differences are:
1. crank fluctuation sensor
2. secondary O2 sensor
Neither of these are used with OBD1 and can be ignored. The other main difference is the plug style of the injectors. You can swap plugs to OBD2 style, or just swap to OBD1 injectors and keep stock plugs.
It is no big deal putting OBD2 into an older car unless you try to also run the OBD2 computer. Use a computer of the same vintage as your car and there are few hassles. Also the engine will fit fine, externally all the mounts are the same.