Give your truck an upgrade in horsepower with SCT X4 programmer. The X4 tuner will reprogram your ride to give it the ultimate boost in power, torque, and throttle response. You can gain up to 150 horsepower on your stock diesel truck or up to 74 ponies on your gas-fueled chariot. SCT X4 comes with a pre-loaded tune file that is proven to increase horsepower and torque. Also the X4 programmer can hold up to 10 custom tunes that can be created by a SCT custom tuning dealer. The X4 is a lot more than just a programmer it also comes with a LCD monitor that allows you to monitor all your sensor data like EGT temps and air-fuel ratio. You can also record your vehicle's PCM data on the programmer or a PC. Installing the SCT X4 programmer is easy all you have to do is plug it in to the your OBDII port and follow that step by step instruction on the monitor. So if you want a reliable performance tuner that is DYNO tested to improve your horsepower, torque, throttle response and even fuel mileage in your truck, than the SCT X4 programmer is for you. | SCT X4 Perfomance Programmer 7015