Get easy plug-n-play performance with the Superchips Flashpaq Tuner. Plugging right into your under-dash OBD-II port, the programmer gives you increased horsepower, torque, and control over your rig. Superchips covers your Flashpaq with a 2-year warranty as well as a 2-year powertrain warranty.
The power you want under the hood is a tune away-with Hypertech's high-tech Max Energy Programmer. Get the horsepower, torque and power of your engine that you've been dreaming of, all in one small but mighty tuner. Lifetime Warranty.
Rip-roaring power is just a click of a button away with the Banks AutoMind Programmer. Packed with custom power, sport, towing and economy modes, it adds the perfect amount of performance for all driving conditions. Opens the door for custom mods to your rev limiter and more. 1-year warranty.
Rocket your Jeep up the toughest trails with the Superchips TrailDash Jeep Tuner. Optimized for off-roading, this Jeep programmer modifies, monitors and tunes a vast array of engine essentials. 4.3” color touchscreen display. 1-year warranty.
Not all power programmers are engineered for tire-smoking performance. The Hypertech Max Energy E-Con power programmer tweaks your motor’s settings to maximize fuel economy, saving you a bundle of bucks at the pump. And, this power programmer boasts an easy plug-and-play installation. Lifetime Warranty.
Link your DiabloSport Predator power programmer to your laptop with the DiabloSport PC Interface. This handy kit comes with a USB cable and 12V power supply—everything you need to upload custom tunes and stream live data to your PC. 2-year warranty.
Engage more than your engine with the Edge EAS Power Switch with Starter Kit. The ultimate monitor accessory, the Edge EAS is a link system that lets you control lights, compressors and other accessories from your Edge CS/CTS Insight, Evolution, and/or Juice with Attitude. 30-day warranty.
High-performance tuning and cutting-edge computing come together with the Superchips VIVID Performance Tuner. This wireless tuner syncs Superchips’ legendary tuning with your Android-powered smartphone/tablet or the Superchips-customized Archos 43 internet tablet computer. 1-year warranty.
Not sure which 2004 Jeep Grand Cherokee Power Programmers & Performance Tuners are right for you? We have over 5642 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:
"Wow i love this programmer. It outperforms the JET chip i had before and gives more options. Although its a little pricey, i would definitely buy again. The fact that its internet updateable is a huge plus as well. I only use top of the line products on my jeep and this is definitely top of the line. I tuned my engine for 91 octane fuel, adjusted my speedo for 32" tires, and removed the top speed and rev limiters. The JET chip could never do all of that. Definitely recommend this tuner for auto enthusiasts" —Cameron D from Enon Valley, PA bought a Superchips Flashpaq Tuner for a 2004 Jeep Grand Cherokee, 4.0L 6-cyl. engine.
"The tuner does appear to improve the fuel economy even when the performance program is uploaded. The cost of the tuner should be alot less, it is only software, and the hardware of the tuner is not very expensive looking. Overall I did notice some improvement in the performance department too." —Eric K from Lake Ariel, PA bought a Superchips Flashpaq Tuner for a 2004 Jeep Grand Cherokee, 4.0L 6-cyl. engine.
"Upon recieving my tuner I immediatly changed the tune to 87 performance and corrected my speedometer for my larger tires. The performance gains are more than i expected and its corrected the lag i used to feel on hot days and with the a/c running. Mileage increased 2mph and im now able to keep up with traffic in the fast lane." —Craig B from Allentown, PA bought a Superchips Flashpaq Tuner for a 2004 Jeep Grand Cherokee, 4.0L 6-cyl. engine.