Not sure which 2004 Jeep Liberty 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:
"This chip paid for itself with just the way the automatic transmission shifts now. Without the chip the transmission always tried to get into overdrive, and didn't want to downshift. Now, it takes a steady speed with no throttle modulation for extended seconds before it drops into overdrive, and a mash of the accelerator downshifts seemingly twice as quickly as before. Around town driving is highly enhanced by these transmission changes. I think the chip added some power as well. I installed it, along with aftermarket: drop in high flow air filter, throttle body spacer, and a cat-back exhaust. The chip has really complimented the other mods, and boosted their effect no doubt.If you own an automatic Liberty with other mods, you'll like this chip.I can't really say much about the fuel economy because with the extra power I've been sticking my foot in it more, but I can tell you that it didn't hurt it at all. My MPG is nearly the same now driving it hard as it was before driving it easy - nearly. With easy driving it would be even or better. It was worth the money, and got it at a great price here too." —Joel C from Tulsa, OK bought a Jet Performance Module for a 2004 Jeep Liberty.
"It took all of 5 seconds to insall. Not only did it improve acceleration it also seemed to make the transmission shift better. All in all I think it was worth what I payed for it. Randy" —Randy L from Starkville, MS bought a Jet Performance Module for a 2004 Jeep Liberty.
"The jet module is a product good for the money. However i did not notice much performance from the module. The most noticable improvement was the new transmission shift points and shift firmness. Overall good product." —Marcus S from Riverdale, MD bought a Jet Performance Module for a 2004 Jeep Liberty.
"The Jet Module did give a little extra power thru th eRPM curve, but most of all it did change the shifting points in the tranny so that now it doesnt shift in and out of overdrive when traveling thru the mountains. I had some questions prior to the instalation and called customer service and they were verry helpfull with all my questions." —Robert A from Bloomington, IL bought a Jet Performance Module for a 2004 Jeep Liberty.