2003 Hummer H2 Performance Chips
- SUPERCHIPS® - VIVID LINQ Performance ChipHummer H2 Gas 2003, VIVID LINQ Performance Chip without tablet screen 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...Our price: $349.99$349.99 20% OFF
- SUPERCHIPS® - Cortex ProgrammerHummer H2 V8 Gas 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 economy, or...Our price: $379.99$379.99 20% OFF
- SUPERCHIPS® - Flashpaq TunerHummer H2 Gas 2003, Flashpaq Tuner by Superchips®. This compact diagnostic programmer connects with any OBD II compatible gasoline-powered vehicle to adjust levels of horsepower and torque most beneficial to towing, racing, fuel economy, or...Our price: $349.00$349.00 20% OFF
- EDGE® - Evolution CS / CTS ProgrammerHummer H2 6.0L Gas 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 in to any OBD II...Our price: $439.00 - $589.00$439.00 20% OFF
- EDGE® - Insight CS / CTS MonitorHummer H2 Gas 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. Fault codes and check...Our price: $299.00 - $399.00$299.00 20% OFF
- DiabloSport® - Trinity ProgrammerHummer 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 vehicle gauge info,...Our price: $599.00$599.00 20% OFF
- DiabloSport® - inTune ProgrammerHummer H2 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 mileage. The color touch screen...Our price: $389.00$389.00 20% OFF
- HYPERTECH® - Max Energy ProgrammerHummer H2 V8 6.0L Gas 2003, Max Energy Programmer by Hypertech®. Regular Fuel: HP Gain 17, TQ Gain 20, Premium Fuel: HP Gain 24, TQ Gain 41. The Max Energy Programmer series provides high levels of power and economy for gasoline engines, with...Our price: $329.99$329.99 20% OFF
- HYPERTECH® - Max Energy E-CON™ ProgrammerHummer H2 V8 6.0L Gas 2003, Max Energy E-CON™ Programmer by Hypertech®. Regular Fuel: HP Gain 17, TQ Gain 20. This tuner is created with a value price to give users of low-octane gasoline engines the core tuner functions of increased power and...Our price: $329.99$329.99 20% OFF
- HYPERTECH® - Speedometer Calibrator ProgrammerHummer H2 Gas 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 provide that specific function...Our price: $229.99$229.99 20% OFF
- AEM® - X-WiFi Wideband Air / Fuel Controller and EGT MonitorUniversal X-WiFi Wideband Air / Fuel Controller and EGT Monitor by AEM®. This versatile tool allows you to monitor and control AFR and EGT (EGT sensors sold separately) and access the data on your iPhone or iPod Touch via wireless WiFi connection,...Our price: $359.64$359.64 20% OFF
- AEM® - 4-Channel K-Type Thermocouple AmplifierUniversal 4-Channel K-Type Thermocouple Amplifier by AEM®. Get laboratory-grade accuracy for critical vehicle system temperatures like oil, air, coolant, disc brake, etc. with the 4-Channel K-Type Thermocouple Amplifier. Unlike single channel...Our price: $319.24$319.24 20% OFF
- Auto Meter® - Level 1 Digital Pro Shift Controller Universal Level 1 Digital Pro Shift Controller by Auto Meter®. Every high-performance vehicle needs high performance gauges, and for the last 50 year, most of them are built by Auto Meter.Our price: $139.09$139.09 20% OFF
- JET® - Performance ModuleHummer H2 2003, Performance Module by JET®. Jet Power Control Module.Our price: $239.96 - $247.46$239.96 20% OFF
- JET® - Computer Chip ProgrammerHummer H2 2003, Computer Chip Programmer by JET®.Our price: $217.46 - $375.00$217.46 20% OFF
Posted by Harold L.
"The ease of installation was better than what I had anticipated. The programmer housing was an exact match to my dashboard, and the appearance of the unit looked factory installed. I have only had the programmer for a short while, but enjoy the fuel savings already."
Posted by Ernest T.
"I have owned the Cortex and this does the exact same thing. This one can only be used on one vehicle, that is the only difference. Woke my Denali right up, it has never run so good."
Posted by Kurtis K.
"First got the Diablo in Tune... it updated very slowly... I mean slow! Then plugged it into the truck and couldn't read my PCM... But I got it working and...very impressed! The Hemi is a mean machine! "
Posted by Randy F.
"It got to my house quick; was easy to install, and allows for speedometer adjustment for tires! I had to read my speedo 10 miles faster than what it said before! Not anymore!"
Posted by Jonathan P.
"The tuner wad easy to install but didn't make that big of a difference, a little horse power but nothing for fuel mileage so far."