Hellwig 04-09 Ford E-350 SD Load Pro – Up To 2500lb Level LC 3 Leaf Helper Spring w/o Mounting Kit

Once installed, the X-Pedal Pro Black edition delivers immediate, customized performance for your vehicle. Specifically, the X-Pedal Pro Black Edition controls the throttle signals going into your stock ECU (Engine Control Unit) so that your vehicle instantly responds faster and accelerates swifter… or slower and more economically, depending on how you program the X-Pedal Pro Black Edition. With 9 levels of sport mode for crisp, on-demand throttle response and 7 levels of ECO mode for improved fuel efficiency, you’ll have an infinite amount of adjustability to match your specific driving style and performance needs.