Heres a far fetched idea:
So if we can feed a wideband signal back into the ecu for logging why cant we make the ecu act upon that information accordingly? Im not talking about a complete wideband hack to narrowband files (unless youve got that) but something simple we could convert one table to enrich based on where the AFR input currently is.
Say we took a KFFDLBTS or kflbts table.
Remove the RPM axis and use the wideband input as the axis. The table data could be written to enrich further based on a certain load and our current AFR.
Im not sure if taking that 0-5v input and turning that into afr in the ecu to put on that axis is even possible. Or would it be possible to use the egt sensor input and instead of having it input temp have it input lamda or afr. I know theres conversion factors for if you wanna use rs6 sensors so we could use that conversion to get us afr in the ecu as a calculated variable then change the axis numbers to be useful.
Well above what id be capable of alone but i just had a thought. I wonder if anyone else has put in time trying to do a similar hack. Anyone think it can be done?
 

It surely can be done. You'll have to filter and smooth the wideband output first though, since it usually jumps around pretty badly.
Frankly, at this point it's relatively easy to implement "ghetto hacks" like this. Problems would arise when something goes wrong (O2 sensor or controller malfunctions, wiring, etc). You have to plan ahead accordingly and think out the whole program logic in a way that won't kill your hardware rather fast. And this is what takes the most time.

I have thought of a similar hack to feed in a "real" MAP sensor into the "ps_w", instead of calculating it, but never got to actually writing the code because of issues noted above. Takes a lot of time to do it properly.