2003 Hummer H2 Performance Chips & Programmers

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    • (0 reviews)
      Hummer H2 2003 Cortex Programmer by Superchips®. This hand-held diagnostic programmer connects with any OBD II compatible diesel or gasoline vehicle to adjust levels of horsepower and torque best suited to racing, towing, fuel...
      $474.99$379.99
      # 1251188
    • (0 reviews)
      Hummer H2 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 all-terrain...
      $436.25$349.00
      # 1250910
    • (1 reviews)
      Hummer H2 U Engine VIN code 2003, Evolution CS / CTS Programmer by Edge®. Providing the ultimate level of vehicle instrumentation along with 4 levels of performance enhancement, the compact CS and wide-screen CTS programmers plug...
      $548.75from $439.00 - $589.00
      # 1341666
    • (0 reviews)
      Hummer H2 6.0L / 6.2L 2003, Trinity Programmer by DiabloSport®. This hi-res color screen programmer plugs in to any vehicle’s OBD II port to remap ECU operation for increased power and mileage. The screen displays a wealth of...
      Windshield suction cup mounting bracket includedFeatures performance enhancing levels custom tuned for Economy, Performance, Towing, and Extreme Performance for modified vehicles
      $748.75$599.00
      # 1454257
    • (0 reviews)
      Hummer H2 6.0L / 6.2L 2003, inTune Programmer by DiabloSport®. With dimensions smaller than most smart phones, this full-function programmer plugs in to any vehicle’s OBD II port to remap ECU operation for increased power and...
      Features performance enhancing levels custom tuned for Economy, Performance, Towing, and Extreme Performance for modified vehiclesAlso features performance enhancement programs designed specifically for aftermarket cold air intakes, MAF sensor upgrades, and custom-sized supercharger pulley wheels
      $486.25$389.00
      # 53057925
    • (0 reviews)
      Hummer H2 Generation III 2003, Max Energy Programmer by Hypertech®. Premium Fuel: HP Gain 24, TQ Gain 41. Regular Fuel: HP Gain 17, TQ Gain 17. 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
      $411.25$329.00
      # 4495648
    • (0 reviews)
      Hummer H2 2003, 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 allows you to program for...
      Modify Virtually Every AspectAllows Editing Of Fuel And Spark Tables
      $468.75$375.00
      # 13555720
    • (0 reviews)
      Hummer H2 2003, Performance Programmer 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 allows you to program for...
      Modify Virtually Every AspectAllows Editing Of Fuel And Spark Tables
      $271.83from $217.46 - $337.49
      # 13555719
    • (0 reviews)
      Hummer H2 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 purposes of...
      $437.49$349.99
      # 1250911
    • (0 reviews)
      Hummer H2 2003, Power Control Module by JET®. These Stage 2 performance chips/modules from JET will improve the performance of your car or truck with very little work. These chips have been programmed to deliver peak power...
      Add Up To 25 HorsepowerPlug-In Installation
      $303.70from $242.96 - $250.46
      # 13555724
    • (1 reviews)
      Hummer H2 U Engine VIN code 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...
      $373.75from $299.00 - $399.00
      # 1368896
    • (1 reviews)
      Hummer H2 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 vehicle...
      $353.99$283.19
      # 42492489
    • (0 reviews)
      Hummer H2 Generation III 2003, Speedometer Calibrator Programmer by Hypertech®. The law requires accurate speedometer readings, even if you have non-stock tires or gear ratios installed. The Speedometer Calibrator is created to...
      Programs vehicle ECU to correctly calculate and display speedometer and odometer readings when non-stock size tires are equipped on vehicleRevised gear ratios can also be accounted for and adjusted
      $286.25$229.00
      # 1684111
    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...