I purchased the Trifecta Elite for my '15 SLT CrewCab Canyon 4x4. After recieving the cable, I downloaded the program into the truck. That took about 20 min. as stated. Started the truck and noticed the engine settled into a smoother idle. Took for a test drive and noticed the better shift pattern. The trans wasnt in a rush to get to the next highest gear. Going up a nice size hill felt easier, not as much throttle needed. When entering the highway, I used full throttle and was surprised at the improved acceleration. Bottom end was better, but mid range pulled much harder, and pulled right up to red line. I have not run a full tank of fuel to see the overall MPG improvement, but computer readouts are higher. Overall I am extremely happy with the gains you get from this download. You won't be disappointed.