Pimpsherm2009

Alright I am in need of some advice, I have a 2000 gsr with a mild build and some stock exhaust parts, and I have an obd1 P72 ecu stock computer. Part number is 37820-P72-A01 ecu. I am looking to go back to the original ecu part number 37820-P72-A04.

Now with that said do I need to find the OBD2 ECU with the same keys and ignition because the immobilzer with activate and ill be screwed? Or is it plug and play?

Pimpsherm2009

anyone

DJYoshaBYD

ummm.. just curious.. WHY are you upconverting?

mouab18c1

iTrader: (5)

im pretty sure you have a conversion harness allowing you to run the obd1 ecu. check to see if you have one, if you do just remove it and install an obd2b gsr ecu

DJYoshaBYD

lol.. yeah.. i probably should have said that too.. im just curious why you would even want to do that

Pimpsherm2009

Yes i have a obd1 harness and a 1994-95 ecu but I want to go back to the obd2 ecu for emissions **** so I can hook it all up again and with the obd2 I can use the scan tool also. I was told when I go back to the obd2 ecu It will have a immobilizer and I will need the keys that it is coded to? anyone have similar problems with that or is it plug and play, I dont want to waste time buying an obd 2 ecu and then it doesn't work...

DJYoshaBYD

yeah.. you will have to have that key.. i mean, you dont have that stuff? didnt your car come with that? you may be **** out of luck

mouab18c1

iTrader: (5)

the question is do you have a conversion harness from obd2b to obd1? or did they rewire your ecu to run obd1? like i said if the harness is there just remove it and plug your obd2 ecu back in. its all plug in play. just make sure everything mates up