SCT LiveLink - How to Log & Analyze Your Vehicle's Data

Never mind my question. I was attempting to data log to check AFR at WOT before and after my engine swap. However, I just learned that our O2 sensors and the OBD2 data is 'Narrow Band' and useless at WOT.
 
Jeronimojc said:
Never mind my question. I was attempting to data log to check AFR at WOT before and after my engine swap. However, I just learned that our O2 sensors and the OBD2 data is 'Narrow Band' and useless at WOT.
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Correct, the stock O2 sensors only know whether the mixture is less or more than ideal, and are not able to give you any sense of how far away from ideal you are.

You need a wideband sensor to properly log and tune the AFR. STFT and LTFT can only give you a basic idea.
 
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