too lean ?

Bob, I fired up the laptop to give you an example. The “plot” window at the bottom is the recorded data from my log. Currently I am logging the channels, engine speed, map, throttle%, lambda1 (afr), and spark timing. After the I stop recording I can playback the entire thing and make changes in the tune, (timing map shown above), and save them, then load the new tune with the changes. I can also tune in real time and the changes are instant but it’s so hard watch all the different channels at once. This way you can cruise through at a snails pace making small changes and see the effect on the next trip. Hope that helps.