Engine management should be very important to those who choose to make performance modifications to a Jeep, Liberty, or any other vehicle. Engine management should be a top priority to anyone who wants to get the most out of the performance modifications they have made to their vehicle. The main factor that dictates the need for engine management in a modified Jeep, Liberty is ECU compensation. In most simplistic terms, ECU compensation describes the process that factory ECU's must go through when modifications have been made to a vehicle. Unfortunately, factory ECU's adjust in a negative way in most vehicle modification scenarios. To ensure that a Jeep, Liberty is as finely tuned as it can be to any modifications you have made, you need to take control of your engine management through replacing factory ECU's. The most commonly used engine management techniques... View more used with a Jeep, Liberty are the piggyback engine management technique and the stand-alone engine management technique. The main difference in the two techniques is that piggyback engine management method works with your stock ECU and stand-alone engine management techniques completely replace the stock ECU. Depending on your personal budget, one of these options should allow you to experience proper engine management. View less
