I have a edge chip it has 3 in cab adjustable settings they range from 30 to 65 horsepower gains, it helps to eliminate downshifting while towing, it also will increase fuel mileage, easy 10 minute installation. It has nothing wrong with it the reason I took it off is because I am putting a bigger one on. ASKING $175 Shipped Call 317-410-5698 for any questions or send me a PM I also have pictures if you want me to send them