I have a PLX wideband hooked up to the EGR port so I can log it in hptuners.
My equation for hptuners is ([PID.2811]/0.5)+10.15, pid.2811 being the EGR.
Problem with this is, I am getting inconsistent results comparing my wideband logged error to the stock narrowband error. Shouldnt these be pretty close in non-pe areas, or at least, have some resemblance?
I made a ~80min log of interstate driving (approximately 9000 hits in the 6250 cell), and filtered out any PE or DFCO, then made a graph in excel, which looked like this:
I have tuned my MAF off the wideband, so naturally its pretty close, but the difference in not only the results, but the general shape bothers me since I will eventually be going FI and dont want to have to worry about if my WB is lying to me or not...
Accuracy at WOT is within .5%.
I am using the wideband to simulate that side narrowband, should I leave it like that or just use the other side soley for trims?
The common concensus i get from reading here is the PLX isnt as good as other widebands, but its what I have and I was hoping I could modify the eqation somehow to at least get it close (say within 3%) of what the trims are telling me.
Any suggestions?