I bought this and still am not able to install it. The techs for help were not helpful. rushed me off the phone all 4 times i called. Their final verdict was that the programer was not working with my truck due to after market electronics i had installed. They said i had to un install all of them and re install them after installing the programer. WHERE WAS THIS WARNING WHEN I WAS SPENDING ALL THIS MONEY ON THE PROGRAMER!!???