Jet Performance, Performance V-Force Plus, for 99-09 Jeep Grand Cherokee WJ or WK with 4.7L Engine

The all new V-Force Plus is designed for the performance enthusiast that wants improved performance, acceleration and the ability to monitor vehicle information. The V-Force Plus will optimize ignition advance and fuel maps for optimum horsepower and driveability. Choose from over 14 different screens that monitor throttle position, mass air flow, manifold pressure, fuel economy and air/fuel ratio allowing the driver to monitor driving habits from the backlit LCD for the best fuel economy and performance. Available for most foreign and domestic vehicles including 2010 models.