I asked this question of the DiabloSport Tech support and got the answer below. Not sure I understand the tech's answer. Perhaps someone here has an answer to my question. Thanks Barry


Q.What exactly does the stock tune do?
Is it the factory tune or a Diablosport tune?


A.thas a stock tune we supply with the tool incase you just want the speed remove that would be the tune to use the modified the speed limeter.. http://www.dieselplace.com/forum/images/smilies/confused.gif

The way I understand it, the stock tune is your factory tune. Choosing the stock tune will allow you to keep it stock but remove the speed limiter and adjust for tire size if necessary. When you upload one of the Predators modified tunes, it actually removes the stock tune and stores it so that it can be returned to stock at any time.

Thanks for the reply. I guess the tech didn't understand my question or maybe it takes a couple of questions for him to get warmed up. It was 7:00 am when I wrote the message and got a reply back by 9:00 am.