Do you prefer to tune for part throttle with the narrowbands or with a wideband?

[mowton]

I use the trims as well (too lazy to integrate my LC-1 WB into my car ) but wonder, without a wideband, is there a magic way to validate the O2's are g to spec and the several O2 tables are programmed properly?

I left all that stock but see there are tables like rich/lean vs. airflow and mode vs airflow which I am not sure about. I believe they compensate for changes in airflow which at the low g/s, the O2 sensors take longer to toggle rich to lean and lean to rich (or less samples per second) so they lower those points a bit to increase the granularity for the PCM.

Not sure if I explaned myself clearly

Ed M

[KLUG'S SS]

Personally I prefer to just completely tune the VE and MAF with the wideband and I have plenty of faith in my WB as I have the most accurate wideband out there for the money with the AFX.

I always do my whole tunes in open loop, from idle to part throttle to wot tuning and then renable closed loop and my STFTs are always within 1-2% at the most of what my AFR error was in open loop so I am happy with that.

[Nitroused383]

If you have a wideband tune everything with your wideband. If you tune VE with STFT's than why would not tune your MAF with STFT's? That doesn't make much sense at all. Obviously you need a wideband to tune anything besides 14.7:AFR. I have newer corvette rear bosch o2 sensors and those POS do not switch worth a crap on a cammed car. I get insufficient switching codes so I always run open loop. The only way I would trust your narrowband sensors if you see that they can switch decently at low rpms.

[RWTD]

I have newer corvette rear bosch o2 sensors and those POS do not switch worth a crap on a cammed car. I get insufficient switching codes so I always run open loop. The only way I would trust your narrowband sensors if you see that they can switch decently at low rpms.

I agree, I think those sensors are junk. I have ran into that myself. The factory sensor with the proper extension harness ist he way to go.