Hypertech Power Programmer III for 97-04 Jeep Wrangler TJ, 96-01 Cherokee XJ & 96-01 Grand Cherokee ZJ/WJ with 4.0L Engine

The Power Programmer is much more than a tuning chip. It is a self-contained automotive tuning computer! When you connect the Power Programmer to your vehicle, it's "smart" program instantly recognizes your vehicle's powertrain by reading the Vehicle Identification Number (VIN). The VIN contains specific information on the engine, transmission and drivetrain which the Power Programmer decodes before it downloads the Power Tuning program that is precisely tailored to your Jeep®.

The Power Programmer lets you you choose Hypertech's Power Tuning program for regular 87 octane or premium 93 octane gasoline. Both options improve performance without detonation. The Power Progammer allows you to access and reprogram the vehicle's computer to function properly withaftermarket components. It will not recalibrate the speedometer, but the recalibration can change the Jeep's RPM powerband. The Power Programmer is incredibly powerful, but it is also incredibly easy to use. Reprogramming does not require any tools or knowledge of cars or even computers. Plus, you can return to OEM (stock) programming in just minutes.

The Power Programmer recalibrates the on-board computer with dyno-developed & road-tested programming along with ignition tuning software. The result is possible improvement of up to 13 horsepower and 21 ft/lbs. of torque over stock tuning with regular pump gas. Try one today and see for yourself!

Plugs right into the ODB-II diagnostic port of your Jeep. Answer simple Yes/No questions to program your Jeep.