Yes, it's a 2007 TBSS 6.0, twin turbo/E85 with a 4L80E. A/C is never on during these events, and transmission is usually in 3rd (D).
I added any and all torque / TCS / TM scanner PIDs I could find and went for a drive. Resulting scan is attached.
scan-7-6-2.hpl
I am attaching a video of the issue and the root cause. It is a large change in air over 20% without any known cause. ECM is just reacting.
First event is 3:07, light throttle take off from stop, and I see "Spark Torque Management type: Trans". No shift occurring. I don't recall seeing that before.
Second event is 3:52, tip-in from coasting. No TM "type" being displayed, although "Torque Mgt Advance" is showing as 16.8 degrees. This occurs a number of times throughout the scan, sometimes pulling as much timing to hit the minimum 5 degrees. Now, considering I have all of the master enable/disable settings for any tip-in limiting, TCS, etc disabled, where is this coming from? Is this a matter of these settings needing to remain "enabled", but reduced with the numbers instead?
There is another event at 4:54 (WOT) where it goes to 5 degrees timing right as it's getting into boost, but Torque Mgt Advance is still 0.0.