I bought the programmer with a couple other things from auto anything and it's pretty nice. It will tell you anything that your computers hooked up to any temperature related to anything in her vehicle your horsepower your torque your fuel mileage at any given time it gave my pick up 35 more horsepower and gives you the option to change anything about your vehicle you want. It does freeze up if you leave your vehicle running for too long though without driving
Much improved power and mileage
I bought this to improve mileage. It did improve mileage about 5 mpg (average about 24 mpg), but only about 1-2 when towing (average 14.5 mpg). The mileage coach is helpful as are the many gauges. Although I have never used the performance settings, my throttle response and acceleration is greatly improved over stock.