2003 Grand Cherokee Chips & Programmers

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    • (0 reviews)
      Jeep Grand Cherokee 2003 TrailDash Tuner by Superchips®. Specially created to enhance the off-road ability of Jeep vehicles, this tuner control board links to your main vehicle computer in order to lock axles, transfer cases,...
      # 1250925
    • (0 reviews)
      Jeep Grand Cherokee 2003 Flashpaq Tuner by Superchips®. This compact diagnostic programmer connects with any OBD II compatible vehicle to adjust levels of horsepower and torque most beneficial to towing, racing, fuel economy, or...
      # 51930304
    • (0 reviews)
      Jeep Grand Cherokee 4.0L 2003, Max Energy Programmer by Hypertech®. Premium Fuel: HP Gain 15, TQ Gain 24. Regular Fuel: HP Gain 14, TQ Gain 14. The Max Energy Programmer series provides high levels of power and economy for gasoline...
      Designed specifically for gasoline enginesRead, display, and clear diagnostic trouble codes and check engine lights
      # 1683618
    • (0 reviews)
      Jeep Grand Cherokee 4.0L 2003, iQ Flash by Banks®. Take complete control of all added power and safety functions when you connect the Banks iQ Flash to any Banks diesel tuner, AutoMind Flash Programming Module, SpeedBrake, or other...
      $561.38from $449.10 - $598.10
      # 46298388
    • (0 reviews)
      Jeep Grand Cherokee 4.7L 2003, V-Force Plus Dynamic Spectrum Tuner by JET®. The JET Performance Programmer lets you take control and program your own vehicle computer to match your driving style. JET's exclusive Tri-Power tuning...
      Modify Virtually Every AspectAllows Editing Of Fuel And Spark Tables
      # 13546219
    • (0 reviews)
      Jeep Grand Cherokee 2003 VIVID LINQ Performance Chip by Superchips®. This controller unit for your gasoline-powered vehicle offers all VIVID Paq functions, but without the tablet screen. Connects to most Android-based phones for...
      # 1250926
    • (0 reviews)
      Jeep Grand Cherokee 2003, Ignition Performance Module by JET®. JET Stage 2 Computer Chips/Modules will unleash the true high-performance potential of your vehicle's engine and completely remove the dull factory settings! The...
      Provide Performance Gains Up To 21 Horse PowerEasily Installed In Less Than 30 Minutes
      $303.70from $242.96 - $250.46
      # 13555902
    • (1 reviews)
      Jeep Grand Cherokee 2003, WatchDog™ Monitor by Bully Dog®. Monitor multiple vehicle parameters. Plugs into OBD-II port for easy installation. Mount permanently or suction cup to windshield. Great for tuning or towing. Tracks...
      # 42491779
    • (1 reviews)
      Jeep Grand Cherokee WJ 2003, Insight CS / CTS Monitor by Edge®. Specially created to provide the ultimate level of vehicle instrumentation, the compact CS and wide-screen CTS monitors plug in to any OBD II compatible vehicle port....
      $373.75from $299.00 - $399.00
      # 49781800
    • (0 reviews)
      Jeep Grand Cherokee 2003, Speedometer Calibrator by JET®. JET Performance Accu-Speed interacts with the vehicle speed sensor on late model GM, Ford, Dodge, and Jeep trucks and SUVs. It connects to the transmission to allow shift...
      Designed to modify speed sensor output readingsConnects to the transmission output speed sensor
      # 13546653
    • (0 reviews)
      Jeep Grand Cherokee 2003, RAM Mirror-Mate™ Mounting Kit for Triple Dog GT and WatchDog by Bully Dog®. Adds a Ram-Mount ball mount between the OEM mirror and the mirror button glued to the windshield glass. Does not affect...
      # 42488667
    Guides & Articles
    Are Superchips Really Super?
    Although most automobile manufacturers try to achieve a balance between performance and emissions when the ECU is programmed, in reality more power can be obtained when certain engine control parameters are changed. Aftermarket superchips are made to adjust parameters to increase engine power and torque. The superchip gives a “boost” to your vehicle’s...
    The throttle controller will basically bypass the computer in the vehicle. It is designed to take the information right from the accelerator position sensor and compile it in a high speed controller circuit that compiles the signal sent from the Accelerator position sensors. With this controller you are able to program it to different options and the throttle...
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