I love mine too, well worth the money. I will say though, if you already have touchy tunes, do not get a hi-voltage IDM; you will regret it.
These idms, will make the pedal slightly touchier/more responsive, but they will also give you a touch more power throughout. Some trucks will run smoother as well.
I have PHP tunes and Beans custom tunes on my 250/10's and its a great addition. Beans tunes with swamps IDM may be a little touchier than I like, but not bad. My truck feels like it has a bit more power from the time I hit the pedal all the way to the floor. More noticeable at cruising speeds I think. I get the same effect on stock injectors/standard tunes.
I'm not very good at explaining things, but it is money well spent as long as you do not have touchy tunes such as DP. Just my $.02