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-   -   AEM Wideband install questions (https://www.clublexus.com/forums/sc-1st-gen-1992-2000/892324-aem-wideband-install-questions.html)

IISevv Jun 22, 2018 05:07 PM
AEM Wideband install questions
 
I’m going NA-T on my 92 SC300 and have a couple questions about configuring the AEM Wideband to replace the narrowband output of the stock o2 sensors. Since the stock sensors are voltage based should I run the 0-5V output of the AEM to the o2 sensor input on the ecu, so it sees a signal and maintains values? I’m going to try to adjust AFR’s with a SAFC.

scsexy Jun 23, 2018 12:26 PM
Originally Posted by IISevv (Post 10231752)
I’m going NA-T on my 92 SC300 and have a couple questions about configuring the AEM Wideband to replace the narrowband output of the stock o2 sensors. Since the stock sensors are voltage based should I run the 0-5V output of the AEM to the o2 sensor input on the ecu, so it sees a signal and maintains values? I’m going to try to adjust AFR’s with a SAFC.
I would just run 2 o2 sensors, A stock one to make the car happy if your tryna to keep the stock ecu or a supra ecu like the tt ecu mod.
Thats what i have on my Na-t car 1 sensor going to both banks of the computers ecu and my wideband separate going to my gauge inside

MLeopard Jun 25, 2018 06:23 AM
Your AEM output can be set to emulate a narrowband (0-1V) O2 sensor. There is a rotary switch on the back of the gauge that changes what the sensor outputs. It will still display wideband values on the gauge. This should work to make the factory ECU happy.

SupaDoopa Jun 26, 2018 06:23 AM
You may have had better luck posting in the electrical support portion of the website. The answers above are pretty accurate, though. Just future reference.

mrmj2u Jun 26, 2018 08:53 AM
Most down pipes have a provision for multiple O2 sensors. Any reason for wanting to run just one?

https://www.clublexus.com/forums/bui...l#post10215882

IISevv Jun 26, 2018 09:06 AM
Originally Posted by mrmj2u (Post 10234526)
Most down pipes have a provision for multiple O2 sensors. Any reason for wanting to run just one?

https://www.clublexus.com/forums/bui...l#post10215882
Stock, the only reason (as far as I know) they run 2 sensors is to compare data between banks of cylinders. 2 o2 sensors right after another with an aftermarket one-piece manifold shouldn’t provide the computer with any additional information.

mrmj2u Jun 26, 2018 09:14 AM
So have you figured out which ECU you will use for your NA-t? If you are planning on running the GTE ECU, you only need one O2, it's pretty much the same with the stand alone's.

My setup, and most other turbo setups use 1 O2 sensor for the ECU and 1 for Wideband.


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