Jerry, I suggest you get your facts straight on VE tuning stuff. You have TONS of incorrect information on this subject.

1. You CANNOT use LTFT to tune VE. The LTFT data point is a function of an air mass calculation that modifies the VE table. An easy proof of this is to unplug the IAT and watch the LTFT number move 10+ or more percent.

2. About half of the non Wbody v6 fwd cars GM has use a RPM vs calculated air mass table instead of the VE table when in MAF failure mode.

3. Although a select few OSID's have "ve hybrid" mode enabled, it has been proven that even when this mode is enabled either by modification or in a OEM stock file, drastic modifications to the VE table were not able to produce changes to the tune running in MAF mode.

4. Claims of "increased mpg" is very baseless on the fact that you have never shown any proof to this. A car with a horrible tune, and a functional o2 sensor is going to produce the same 14.7 afr that a "well tuned" car and a functional o2 sensor will produce. Just because you have "tuned a car well" does not mean it is going to produce a better 14.7 afr than one that is not.

the tune was more stable over a wider temperature range, meaning, I had less changes in my fuel trims over a wider temperature range
5. This is nonsence as well. Even in VE hybrid mode, on a vehicle that has a very obvious hybrid fueling system (like a 2006 trailblazer ss), the cruising fuel calculation does NOT use VE as a reference, only fuel trim cells that are enabled for VE hybriding are acceleration and deceleration. As mentioned before, these tables are not used on any FWD v6 with any fuel trim cell.