do you need these parts to install a 94-96 g20 ecu into a 99 g20

[aznmystyk]

Hi i was wondering when installing a 94-96 p10 ecu (jwt) into a 99 p11 do you need to also install a 94-96 Rear O2 sensor, 18mm spark plug anti-fouler?

[Ericdd]

no all you need to do is unplug the absolute pressure sensor on the fire wall. You will get a check engine light though. if you want you car to pass inspection then you need to swap that and do a few more things
http://www.g20style.com/how_to_wire_a_95.htm

[Bungholio]

I guess swapping those parts will also help out the idling issues that the car may have with the SES light on?

[Ericdd]

the only idle issue is when the fan kicks on the idle pulse up for a second. other than that it idles normal as ling as the absolute pressure sensor is disconnected

[Bungholio]

Hmmm. Interesting. Thanks for that guide Eric. I was wondering how to get rid of the SES/CEL.