All,
So this really isn't a major issue as the TCC is nearly locked all the time, but on the way out in the AM with a cold transmission and the TCC lock delayed as a result of being cold I get some rolling idle flare.
Tune and log attached, also a screen shot of the issue area.
I had upped the rolling idle and it seems more stable, but still hunts. I went back to stock and tweaked the idle external load and the stock table only made it worse (had a weird spike at 1300 RPM).
From what I see there is either some spark control playing into it or DFCO. Right before the dip the spark is stable, then it dips. Then the recovery spark and thus RPM right after.
Any suggestions? I am not sure what else would be causing the crazy spark swings. I did tweak the rolling idle in that area from 600 (stock) up to 900 now and it was more stable. This way it seems more like a dip then recovery. Before it was a dip then a surge.