Not sure which 2004 Jeep Grand Cherokee In-Line Modules are right for you? We have over 945 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Here's what some of our customers have said:
"The chip has made a big difference in the performance of my jeep, that also has a K&N cold air intake system, 1" billet spacer under throttle body,and a magna flow performance cat followed with a flowmaster delta super 40 muffler." —Dean C from Sherrills Ford , NC bought a Jet Performance Module for a 2004 Jeep Grand Cherokee.