Their dyno runs were done on a loaner truck. They started the morning with a cold baseline. They fine tuned their tweaks All day long and it was an excruciatingly hot day in Florida. By the end of the day the truck was beyond HOT. It was totally heat soaked. The intercooler was cooking. Etc. they made one last tuned run.... even though it was hot... and saw that the power was STILL 450 tuned. They showed that number as it was the most impressive that the power stayed up DESPITE the heat and the ambient air temp and humidity. You can't possibly imagine the power and performance difference this tune makes. It is in a completely different league than 5 star. It's also pushing more boost as confirmed by my logs. These guys have an unlimited amount of track data, quarter mile times, etc.... for all the older generation ecoboosts. They have the reputation to back up their dyno graph. I'm a first time customer with them and I owe them nothing and they owe me nothing. What I can tell you is that Im one happy customer.