These Superchips Jeep Trail Jammer performance kits deliver the ideal air/fuel enhancements for your Jeep. The Trail Jammers dramatically improve the power and throttle response of your Jeep, both on and off the road. These Jeep Trail Jammer performance kits include an electronic module to performance-tune your engine, a machined throttle body to improve drivability, and, depending on the kit, they are also available with a cold air intake system to maximize your airflow. With approximately 20 percent more horsepower, you can really feel the difference with your Jeep. Best of all, these kits bolt on in less than an hour.