Just as the thread topic says, I'd like to start a thread on methods for fine tuning our tunes. Sure, anyone can crank up FRP, Boost tables, etc to make a tire smoking mess.. but some of us are perfectionists and want to tweak the small details. It's easy to smooth tables over.. which gets good smooth running operation but some things come to mind in particular.. the vane tables are one but if anything else comes to mind and ways of analyzing log data please share.
So I've been doing a lot of logging and have noticed some discrepancy between the desired and actual TVANE position. I am assuming the ECM looks up a desired boost level based on fueling "mm3" and RPM and also the vane position at the same time.. if the desired boost isn't obtained "either an overshoot or under, the vane is adjusted accordingly. A question I have does the ECM store these learned values short or long term? I've created a couple custom MAPs in EFILive Scan to mimic the vane tables "plotting the actual and desired vane % against mm3 vs. rpm". I can go back and forth between the two maps to see the differences but this would be a PITA to take the differences in every cell to update the tune's table. Should it be possible to create a custom PID to create the difference between the desired and actual and plot that on a map.. would make adjusting and fine tuning the vane table easier.
What else can be tweaked?
So I've been doing a lot of logging and have noticed some discrepancy between the desired and actual TVANE position. I am assuming the ECM looks up a desired boost level based on fueling "mm3" and RPM and also the vane position at the same time.. if the desired boost isn't obtained "either an overshoot or under, the vane is adjusted accordingly. A question I have does the ECM store these learned values short or long term? I've created a couple custom MAPs in EFILive Scan to mimic the vane tables "plotting the actual and desired vane % against mm3 vs. rpm". I can go back and forth between the two maps to see the differences but this would be a PITA to take the differences in every cell to update the tune's table. Should it be possible to create a custom PID to create the difference between the desired and actual and plot that on a map.. would make adjusting and fine tuning the vane table easier.
What else can be tweaked?
