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Trims versus Lambda histograms

Practical Reflash Tuning

Discussion and questions related to the course Reflashing

Page 1

What is the pro or con to doing a STFT + LTFT histogram versus a commanded VS measured lambda histogram with LTFT disabled?

How much if anything can O2 transport delay / Time constant with long tubes effect either scenario?

Is there a method for observing O2 sensors and their behavior that allows for better calibration of the Transport delay and more accurate closed loop operation?

there shouldn't be a drastic difference between the two methods.

What is the context? Are you tuning WOT only?

Not to WOT yet, just trying to get the base calibration close.