Steven,
I talked to Aaron, because he happened to be the one who answered the phone. I think any of the guys there are going to give you great response.
One thing he did mention is how the late model autos are the hardest truck to "feel" any difference with. However, the quickest test is to time 0-60 runs with and without the box connected.
To disconnect, you simply have to unplug the data link connector. Be sure to leave the connectors in the MAP sensor, or you will get an over-boost fault with the modified wastegate elbow (the box corrects for this by sending a modified signal to the ECM).
As others have mentioned, make sure your jumper is on setting #3 (rightmost set of pins). This adds the fueling right away at 2psi of boost (the other settings delay the fuel until the boost builds higher). This should give you the most kick off the line (and most get a good puff of smoke).
If you feel no change, give Edge Products a call. It is definately worth the money when it's right!
Good Luck