Is it possible to do MAF tuning without a wideband O2 sensor? My LTFT's seem OK (between -5% and +5%), but at times, my STFT's seem a little far away from 0 and I'm not sure what to log/how to setup a histogram to tune the MAF table. I'm mainly concerned with part-throttle tuning as I rarely go WOT.
Is this something that is even possible without a wideband? If so, what do I need to log/graph to do so?
Or am I OK as long as my LTFT's are between -5% and +5% at all times?
Thank you!