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Diablosport inTune i3 Tuner (14-15 4.3L Sierra 1500)

Item S56G14-43
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Market Price $442.99 You Save 12% ($51.04)
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$391.95 (each)

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      Product Information

      Features, Description, Reviews, Specs & Installation


      • Improves Vehicle Torque and Horsepower
      • Preset Diablosport Tunes
      • High-Resolution Display w/ Serrated Edges
      • Checks & Removes Diagnostic Trouble Codes (DTC)
      • OBD-II Data Logging
      • 50-State Legal Certification - CARB E.O # D-770
      • Dyno-Tested Programs for Optimum Performance
      • Buy Licenses for Multiple Vehicle Tuning
      • Compatible with Mac, Windows, and Linux
      • ‘’Easy Tune’’ Mode for Quick Installation
      • Limited 1-Year Warranty
      • Fits All 2014-2015 4.3L GMC Sierra 1500 Models


      Improved Vehicle Torque and HP. If you are in need of a proven and efficient tuner for your 4.3L Sierra 1500, look no further—the Diablosport inTune Tuner has got you covered. The tuner features a high-resolution screen, preset Diablosport tunes, and dyno-tested performance programs that help you boost your truck’s HP and torque.

      Fuel Economy. The Diablosport inTune i3 Tuner maximizes the air-to-fuel ratio of your Sierra's engine. This feature allows for improved thermal efficiency, leading to increased gas mileage.

      Touchscreen Display. Thanks to the i3 Tuner’s high-resolution touchscreen, you can select any adjustable option that suits your needs. Alternatively, the serrated edges ensure you always have a firm grip on the tuner.

      OBD-II Data Logging Ability. The inTune i3 Tuner’s OBD-II cable allows you to retrieve diagnostic data related to your Sierra’s performance and transfer it to your computer. Using the Data Viewer logging software from Diablosport, you can read the data.

      Dyno-Tested Tunes. The Diablosport i3 Tuner features pre-configured tunes and performance programs, which are street- and dyno-tested. Hence, they ensure drivability gains and optimal power.

      PC Compatibility. For the Diablosport inTune i3 Tuner, you can update its software wirelessly on virtually any Linux, Windows, and Mac supported PC. It also supports file transfers.

      Simple Installation. Fitting the Diablosport inTune i3 Tuner to your Sierra 1500 is a quick and easy process. All that is needed is plugging in the OBD-II cable and you're set. Further, the “Easy Tune” mode simplifies tune installation.

      Limited Warranty. Diablosport provides finest quality tuners. In fact, the manufacturer adds more piece of mind through backing the i3 inTune Tuners with a limited one-year Warranty.

      Application. Diablosport inTune i3 Tuner is designed to fit all 2014-2015 GMC Sierra 1500 trucks equipped with a 4.3L engine.

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      Fitment: 2014 2015 Details

      Diablosport 8200

      CA Residents: WARNING: Cancer and Reproductive Harm -


      Customer Reviews (1)

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      Ratings Summary

      5.0 out of 5 overall rating from 1 customers

      Installation Time: Less than 1 Hour

      • March 22, 2020

        5 2014 Base - 2014V6sierraguy Installation Time: Less than 1 Hour

        Diablosport did what I was looking for

        Has a lot of parameters and did exactly what I was looking for. Deleted the afm, checked engine codes, changed shift firmness, and corrected my speedometer for tire size. You can also change the axle ratios and adjust the throttle sensitivity slightly. Very easy to use and makes your truck drive like a truck should.

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      Installation & What's in the Box

      Installation Info

      What's in the Box

      • (1) i3 Tuner
      • (1) USB Cable
      • (1) OBD-II Cable

      Will It Fit My Sierra 1500

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