Edge Products sells its Juice with Attitude performance module with either a color screen (CS) or a color touch screen (CTS) for the in-cab unit. The CTS is available for Dodge/Ram Truck, Chevrolet/GMC, and Ford trucks, diesel and gas versions. MSRP for the Juice with Attitude CS starts at about $500. The CTS is more expensive, depending on year, make, and model.

During a recent visit to Edge's facilities in Ogden, Utah, we installed the Juice with Attitude CTS on a 2007 Dodge Ram HD 2500 with the 5.9-liter Cummins. Our test vehicle was mostly stock, except for an aFe intake and air filter, and a MBRP dual exhaust. Using factory-style connections, it took less than 30 minutes for the complete installation.

1. This module is said to add as much as 100 horsepower and 250 pound-feet of torque in six power levels, and can keep track of your truck's vitals, such as boost and coolant, oil, exhaust gas, and transmission temperatures. It can also store performance data, and has programmable protection for boost, transmission slip, and more.

2. This is the heart of the module. The Juice communicates along the engine's CAN-BUS data stream, from which it receives vital engine, transmission, and fuel-system information.

3. To begin the installation, plug in the injector and map connectors. On the 2007 Ram, these are located just below the valve cover on the driver side behind the intake manifold. Use a small screwdriver to unlatch the plastic clips.

4. The Edge Y connector is installed and the factory OEM connector plugs into the Y's pigtail. Install the map connector, located down lower on the block. Make sure the wires are routed away from hot engine components and tied out of harm's way. Also find a ground source; on this truck, it was just above the battery.