From what I remember you can tie the Stock signal into the UEGO. Isn't there something you have to change on the back of the gauge? Also, what wire do I use from the stock harness?
AEM wideband
- Thread starter JesseH
- Start date
x87SUPRA87x;971035 said:
Some of the AEM UEGO (the non gauge ones) have a 0-1V output to emulate the stock O2 sensor which can be hooked to the stock ECU (if needed). Is that what you were referring to?
There would be no reason at all to run the stock sensor into the UEGO.
im talking about using the wideband to also run the ECU signal to eliminate the OE oneJohn Reed;971073 said:
x87SUPRA87x;971193 said:
If using the AEM gauge wideband, hook the white wire to your O2 input on your stock ECU, then select setting "P4" with the calibration screw on the back of the gauge unit. You can use a small screwdriver to do this. If you have any questions, the instructions with the gauge cover most of this (including a couple of pictures/drawings). The gauge will then output a 0-1V narrowband similation signal on the white wire.
Awesome, this is good to know! An AEM gb is starting soon and I'm glad I can also replace my shit stock one that I usually leave unplugged anyways. Fortunately, our cars use limited input from things like the TPS and O2 and rely mostly on AFM signal for instance.
yes you can do it with either one....mischief7m;971498 said:
back on topic, does anyone know what functions each wire color is on the stock oxygen sensor plug???
on 89+ ecus there is also a o2 heater code 21 to contend with. if there is no o2 sensor or if the o2 heater is broken then the ecu throws a code 21. you may have simulate a o2 heater to keep the ecu from setting off a engine code.