When Jeep® programs the computers that go into its cars, it programs them for the "average" driver. Well, the "average" driver is not you and their average driver may use lower fuel grades. The average driver may not complete all scheduled maintenance. There's performance potential under the hood of your Jeep that you can't access if you stick with the stock vehicle computer. To unlock that performance, install an ignition performance module. 4WD carries a full line of ignition performance modules which will take all the information coming from the various sensors in your Jeep and, based on that information, make precise adjustments that will add torque and horsepower to your jeeping experience.