Honda ECU List - HondaSwap Forums

Make sure to check the ECU's though. P28 is OBD1 but check the P72 ECU.

Here is another link from a member here:

ECU Identification - Team Integra Forums - Team Integra

If your chipping then don't worry about the base maps that are on there as you will be doing your own. Make sure they are manual ECU's but if not have it converted to manual. Really easy just have to remove some components on the ECU.

If you are handy with a soldering iron try here:

http://wikitest.pgmfi.org/twiki/bin/view.pl/Library/WebHome

Great place to gain info. Chipping an OBD2 is a little more involved though so take that into consideration.

http://wikitest.pgmfi.org/twiki/bin/view.pl/Library/ChippingOBD2

Anyways hope this helps. As suggested when reading the wiki, unless you are staying OBD2, its probably best to go standalone or revert to a friendlier OBD0/OBD1 ECU. Depending on your emissions requirements you should be ok with using OBD1 or OBD0 since your car is a 1990 model if you wish to go that route. But always check to make sure.

 

Quick question. What is the first number of the serial number off the engine you bought? Dending on what years on the B-Series you add three to the first number of your serial and you get the year of the Engine and what year it came from. For me its 2 so its 95 just like my GSR which tells you OBD1 or OBD2.

 

quick question. What is the first number of the serial number off the engine you bought? Dending on what years on the b-series you add three to the first number of your serial and you get the year of the engine and what year it came from. For me its 2 so its 95 just like my gsr which tells you obd1 or obd2.

one

 

Just about the only differences between OBD1 vs OBD2 engines are the distributor, injectors, CFK Sensor, and secondary O2 sensor...that's it. Considering the last 2 do absolutely nothing in the running of the car.

You can take an OBD2 engine, put it in an OBD1 car, swap injectors, and use your OBD1 Distributor and do absolutely nothing else. The car will run fine.

I put an "OBD1" B18C1 into my 99 GS-R that had an OBD1 conversion harness and ECU. I swapped the injectors and did absolutely nothing else. I just left the CFK sensor unplugged. I left the Secondary O2 sensor in since it was already there.

All of these questions about casting marks, etc have nothing to do with whether you're OBD1/OBD2.