Smarty Jr

Got myself an early B-day present compliments of the UPS man on Sat. Picked up the Smarty Jr. Cost was $495 and so far worth every penny.
It comes with 3 basic modes, 40hp, 70hp & 100hp. I input the 70hp tow mode and holy crap!!!!!
The smarty jr is supposed to work without damaging your engine or tranny, in addition to no leaving an electronic footprint in the ECM for your dealer to find. You can also do somw tweaking: timing tire size adjustments and some others.
Even supposed to pick up some feul economy too. But, I'm not trusting the overhead liar, going to do it the old fashioned way.