Is there a noticeable difference in horsepower when driving on the freeways after adjusting with the Superchips Flashpaq? Are there any cons to using the Superchips Flashpaq?

 

Mine feels like a whole new vehicle with it... 87 tune gave a mild boost, really not a lot different, so I went to the 93 tune and I can't get enough of the difference, it's awesome. And I'm getting about 1 mpg difference (increase). That and the other functions of the flashpaq make it one of the best mods I've done so far.