hey guys i am posting this up for Kloss. he is tring to figure out how to install a Air fuel gauge into his WRX (2002). he sas he has tried everything and cant get it to work. can anyone explain it on here? Thanks
run a wire to the "hot" wire from the o2 sensor, then you'll need a 12 volt power source, and ground...its not hard, what has he been trying?
i have no idea what he tried but it sounds easy enough. i will relay this info to him tommorow. thanks for the help
Just splice wire B17 in the ECU.. Took me about 15 mins to pull the carpet back, unbolt the ecu, splice, then reinstall again. 02-03 WRX ECU pinout: http://www.ravensblade-impreza.com/modifications/misc/wiring/wrxpin.html
The only problem, is that the info you get off of the rear 02 sensor is worthless info. It is just going to tell you rich of lean, not how much rich or lean. The only way to get afr readings is to run a wbo2. Russ
kinda, but using the stock rear o2 sensor still doesn't tell you how much rich or lean you are. Also around 14.3-14.2 it will say rich, and at anything over 3-4 psi, it is lean. I would not try to tune the car off of that sensor. Russ
Even though these things are pretty much a waste, I thought they were hooked up to the front O2 sensor, not the rear.... :???:
The front o2 sensor is a 0-5v sensor and the rear is a 0-1v sensor. If you are using a autometer gauge, it only works with the 0-1v sensors. Russ
