my install was flawless, My truck is a 2015 and when I bought it had the V08 and I had the VA7 done with the new EGR Cooler so I never experienced how the truck drove originally. All I can say is it feels like a totally different truck and that I am really happy with the GDE Tune. The wife even noticed a huge difference in how the truck drives and that is saying a lot hahahha.