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Vehicles have evolved from being just a 'tool' for transportation to an advanced and capable machine that can tackle a wide variety of tasks. Jampacked with premium technologies and controlled with the computer, they ensure a superior driving experience. However, most of the factory vehicle computers are calibrated very conservatively and intended to meet the needs of an 'average' driver. For those who insist on the latest trends in technology with every passing season and want to get the most out of their vehicle, manufacturers offer more and more sophisticated performance chips and programmers that will turn any daily driver into a performance beast.

We gathered an exhaustive selection of the finest performance chips and programmers to help you unleash the true potential of your GMC Topkick. Get these top-notch products to fine tune your engine for a huge jump in horsepower and torque. GMC Topkick performance chips and programmers contain performance 'tunes' developed and thoroughly tested with the dynamometer to provide you with exceptional function and quality you deserve. You can not only boost your engine's efficiency using performance chips and programmers, but also monitor coolant temperature, exhaust gas temperature, intake air temperature, turbo boost, etc.

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    • (1 review)
      # sp320
      Extreme Power Puck Module by DiabloSport®. Designed specifically for diesel engines, this under hood controller remaps fuel injection and timing to boost fuel economy and power to more extreme levels. For most vehicle applications,...
      Installs under hood easily with pre-fitted connectors, and requires no special toolsBoosts fuel economy by up to 4 miles per gallon under normal highway driving conditions
      $305.95 - $341.95
    • (6 reviews)
      # sp7670
      GT Platinum Programmer by Bully Dog®. The GT Platinum is four products in one; a vehicle engine tuner, monitor, gauge and diagnostic device all in a single unit. The GT dramatically improves the utility of your vehicle by...
      Four products in one remarkable unitInstallation is extremely easy and takes no more than 20 minutes
      $429.00 - $449.00
    • (0 reviews)
      # sp7669
      AutoMind™ Programmer by Banks®. The Banks AutoMind programmer lets you reprogram your vehicle’s engine controller. Features include multiple programs, OBD-II support, and OBD-II code-clearing capability.
      Diesel or GasChoose power level (diesel)
      $368.68
    • (0 reviews)
      # sp9530
      EFILive AutoCal with Custom ECM Tuning by Fleece Performance®. Webster defines the verb Tune as: to adjust for precise functioning. Tuning is simply the act of making a number of mechanical components work in harmony. It is not a...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $55.58 - $849.00
    • (2 reviews)
      # sp13637
      MP8 Series Performance Chip by TS Performance®. Excellent Choice for towing. Does not increase exhaust temperatures & increases fuel mileage. n-Cab Adjustable. Offers a 2-4mpg increase! This superior product is made from first-rate...
      Gain up to 100 Hp increase on light duty and 30% increase on medium duty20% increase in fuel economy
      $445.50 - $535.50
    • (0 reviews)
      # sp22028
      FlashScan Stream License by EFILive®. Providing monitoring capabilities for vehicle parameters, this product is a must for those who want to get the most of the overall performance of their auto. This product is specially designed...
      Ensures monitoring of vehicle parametersMade to boost performance of your auto
      $499.00 - $2,999.00
    • (0 reviews)
      # sp22492
      TCI EZ-TCU Transmission Control Unit by Comp Cams®. Includes transmission Control Unit, Hand Held Unit, Wire Harness.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $637.48 - $821.71
    • (1 review)
      # sp9529
      TapShifter by Fleece Performance®. The Fleece Performance TapShifter allows you to shift your Allison Transmission with the touch of a button just like the 2006 and newer trucks. Perfect for towing, drag racing, daily driving and...
      Easy Plug & Play InstallationLimits Up-Shifts
      $324.99 - $346.86
    • (1 review)
      # sp13210
      ReSpeed Series Speedometer Calibrator by TS Performance®. If you’ve changed your truck’s tire size or rear axle gears, chances are the speedometer reading is off. Because many late-model trucks use the vehicle’s speed to also...
      Recalibrates tire size and/or gear ratio for accurate speed readings to gain precise engine performance and speedometer displayThe Re-Speed can turn off the speed limiter or set the maximum speed the computer sees for optimum engine performance
      $269.12
    • (0 reviews)
      # mpn2955203
      Extreme Power Puck Module by DiabloSport®. HP Gain: Up To 100. TQ Gain: Up To 150. Designed specifically for diesel engines, this under hood controller remaps fuel injection and timing to boost fuel economy and power to more...
      Installs under hood easily with pre-fitted connectors, and requires no special toolsBoosts fuel economy by up to 4 miles per gallon under normal highway driving conditions
      $316.95
    • (4 reviews)
      # mpn1863770
      GT Platinum Programmer (40420) by Bully Dog®. Speed Limiter. Adjustable, Shift Points. Shift Firmness.The GT Platinum is four products in one: a vehicle engine tuner, monitor, gauge and diagnostic device all in a single unit. The...
      Four products in one remarkable unitInstallation is extremely easy and takes no more than 20 minutes
      $449.00
    • (0 reviews)
      # mpn670672733
      EFILive AutoCal with Custom ECM Tuning (FPE-ACD-LBZ) by Fleece Performance®. Tuning is simply the act of making a number of mechanical components work in harmony. AutoCals all come loaded with two tunes. Each Fleece Performance...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $849.00
    • (0 reviews)
      # mpn670672734
      EFILive AutoCal with Custom ECM Tuning (FPE-ACD-LLY) by Fleece Performance®. Tuning is simply the act of making a number of mechanical components work in harmony. AutoCals all come loaded with two tunes. Each Fleece Performance...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $849.00
    • (0 reviews)
      # mpn670672735
      EFILive AutoCal with Custom ECM Tuning (FPE-ACD-LB7-L) by Fleece Performance®. Tuning is simply the act of making a number of mechanical components work in harmony. AutoCals all come loaded with two tunes. Each Fleece Performance...
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $849.00
    • (0 reviews)
      # mpn670672833
      EFILive Switch by Fleece Performance®. Special switch for ECM Tuning. Perfect for your vehicle and lifestyle, it is manufactured to meet or exceed stringent industry standards.
      Designed to deliver trouble-free, consistent performanceRight for your vehicle and lifestyle
      $55.58




    Guides & Articles

    • Performance Chips
      Speedo Calibrators and Tranny Controllers Let You Re-Engineer Your Ride
      Many auto enthusiasts are driving around with speedometers registering too low a speed because they've mounted bigger tires on their vehicle. This effect occurs because larger tires have a greater overall circumference (distance around the outer edge) than smaller ones do. A tire with a larger circumference will cover more ground per revolution, and it will also make fewer revolutions in a mile than a tire of smaller diameter.
    • Performance Chips
      Data Monitors and Loggers Provide Access to Important Drivetrain Info
      If you're tuning a modern engine, there's a lot of information you'll need to know in order to make educated adjustments and avoid trial-and-error guesses. Keeping track of air/fuel ratios, fuel pressures, boost pressures, and rpms is difficult at speed, and trying to commit them all to memory is almost impossible - assuming you even have readouts for these items. Maybe all you need to do is closely watch how temperatures and other things are affected by stop-and-go traffic. Or maybe you take your vehicle on track runs. If so, you already know splitting your attention between gauges and driving just causes you to lose focus on both. Because you can't take notes while driving, we offer a practical and effective solution for the tracking of engine data - recording it electronically for later playback.
    • Performance Chips
      Why Should I Add a Throttle Controller?
      Modern cars and trucks are constantly evolving, mostly due to advancements in electronics. This allows vehicle systems previously controlled by mechanical hardware to be run by computers that have processing power undreamt of several short decades ago. When applied properly, this processing power can wring out higher levels of a vehicle's built-in power and responsiveness, without physically making any engine upgrades. One such system found on today's fuel-injected vehicles is electronic throttle control, commonly known as drive-by-wire.
    • Performance Chips
      Are Superchips Really Super?
      In today's ultra-competitive automotive world where fuel consumption, horsepower, and emissions are paramount, modern vehicles are controlled by computers in order to meet these opposite and conflicting demands. And presiding over the multitude of separate computers on any vehicle is the ECU (Engine Control Unit) - sometimes called the ECM (Engine Control Module).

    Popular Products

    GMC Topkick Performance Chips & Programmers Reviews

    Average rating:  5  5 - 1 review
    4.8 of 5
    Great Economy
    This tuner turned out to be amazing. Upgraded my exhaust and air filter. My average mileage, city/hwy, is 22 MPG. City mileage seems to be improved up to 18-19, from 16. This is such a simple thing to install that would provide an amazing performance/economy boost for your vehicle.
    APosted by Antonia (Corona, CA) /
    2004 GMC Topkick
    Was this review helpful for you? Yes
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