When doing a basic auto tune and looking at the VE tables afterwards. There are changes made in the VE tables that are outside of the range of the narrow band sensors. Example. Changes to VE tables at 500p rpms are obviously outside the range. Does the ECM just ignore those data points? Thanks

 

What are your settings for Auto Tune in the Power Vision.

I believe the defaults are set for a big twin:
MIN RPM is 900 rpm
MAX rpm is 6000 rpm.

The Temp settings are also different depending on a Big Twin, V-Rod or Sportster.
Big Twin
Min Engine Temp 167°F
Max Engine Temp 300°F

V-Rod
Min Engine Temp 160°F
Max Engine Temp 230°F

Sportster
Min Engine Temp 280F
Max Engine Temp 410°F

Fuel Moto also suggests setting the MIN MAP to 30 instead of the default 20 KPA.
https://university.fuelmotousa.com/a...n-motorcycles/

You could save the AutoTune session to a tune slot, flash it to the ECM, then open the tune in WinPV and compare it to the tune you originally
used for the Auto Tune session to confirm if it actually changes the VE values at 500 rpm.

 

Well hell. I meant 5000rpms and now I cannot edit it.

 

The PV changes the fuel / lambda table and the ignition timing for Auto Tune.
It also disable, Adaptive Fuel Factor, Accel Enrichment and decel enleanment.
It also changes the Closed Loop bias to a richer mixture on AFR tunes.

For more info on the Auto Tune modes (Auto Tune Basic is included in the Power Vision Unit for narrow band O2 sensors)
http://www.powercommander.com/downlo...utoTune.02.pdf

The O2 sensors will still be usable at 5000 rpms in auto Tune Basic.


This is from the WinPV Software Guide:
http://www.powercommander.com/downlo...8100016.08.pdf

AutoTune Basic—utilizes the narrowband O2 sensors on bikes that have OEM closed loop
fuel control.

AutoTune Basic
Without any additional modules, the Power Vision will take advantage of what the ECM "sees"
from its OEM narrowband O2 sensors and use that data to achieve the target AFR. This
method works great in those operating areas where it makes sense to run in a lean state:
idle, light load, and cruise conditions. AutoTune Basic will fix the normal closed loop range,
but can also temporarily extend the closed loop range to gain insight on the actual AFR in
areas that are normally open loop (high load/high RPM). At high load/high RPM ranges this
"temporary situation" is not ideal, and this is where it is advantageous to use AutoTune Pro.
Utilizing the AutoTune Basic AFR data and other data from the H-D OEM data bus, the Power
Vision can automatically fix the deviation between the target AFR and actual AFR by
adjusting the VE tables, instead of storing the changes in an Adaptive fuel table. The data is
learned in real time, but processing the data and adjusting the tune is done in an "offline
state" (key on/engine off). After the data is collected, the Power Vision can process the data,
correct the tune, and then re-flash the corrected tune into the ECM.