This is a SCT tuner for a QC 91,93, and a race tune have the original package+cd. Like new and works great on the quad cab trucks. I have had the tunes on the truck for over a year and what a difference they make. Unloaded the tunes and returned the vehicle back to stock. Sold the truck and no longer need the tuner, By the ay torrie is a genius with these tunes had a stock QC running 13.7 with the 93 tune never got to try out the race tune.