[guruerror]

After the Performance tune the truck definitely 'felt' like it was snappier and had a bit more umph in the acceleration. I say 'felt' because I've never had the truck dyno'ed to document.

The stiffer shift pressure definitely feels much nicer than the stock setting.

MPG changes that are specific to the tune would be hard to say...I made several mods all at once (larger tires, lower gears, exhaust, and headers; then the tune two weeks later)...what I can say: after all that I still get 11.5 (which is exactly what I was getting before).