This Superchips tuner / programmer arrives with 3 pre-loaded dyno proven tune files - With a Fuel Economy, Tow and Performance tunes for gains of 24 rear wheel horsepower and 28 torque increase over stock for your 1998 to 2006 Jeep Wrangler TJ with the 4.0 engine.

The Tow tune, whether towing a heavily loaded race trailer or family camper, adds the perfect mix of extra horsepower and torque to help hauling your load easier. This additional mix of power and torque will make going up mountains and hills easier, reduce heat, optimize your transmission for pulling heavy loads and increase fuel mileage while towing.

The Fuel Economy tune adjusts the transmission shift points, engine timing and air / fuel ratios to maximize your fuel economy. Typical real world fuel gains from an Superchips tune are 1-2 city MPG and 2-3 MPG increase freeway on the fuel economy tune.

The Performance tune optimize your truck’s air / fuel ratios, boost levels, engine timing curves,  and modify hundreds of other engine parameters to maximize your Jeep's all-out performance and acceleration while maintaining OEM reliability and drivability.

In addition to the increased horsepower and torque gains, the biggest differences you will see from a Superchips tune is how the vehicle's transmission will shift much smoother and quicker then stock and  also how the tune will eliminate 95% of throttle lag so the vehicle responds much quicker once you step on the gas.

The Superchips F5 programmer features a sturdy, ruggedized case with user friendly buttons and a full color, clear crisp 2.8 inch display for easy viewing!

Use the Superchips F5 to read, display and clear any check engine light codes!

Easy restoration back to 100% stock! The Superchips tuner will auto-save your OEM tune the first time you program the vehicle, so you can always flash back to stock OEM tune anytime you want.

Two year power train warranty from Superchips!