Mini Maxx Tuner V2

H&S Mini Maxx V2 Diesel Performance Tuner ( 209003)

The H&S Mini Maxx V2 brings powerful tuning and vehicle-monitoring capabilities together in a compact, easy-to-use display. Designed for select Cummins, Power Stroke, and Duramax diesel applications, the Mini Maxx V2 gives truck owners convenient access to tuning options, real-time engine data, diagnostic functions, and vehicle-specific adjustments.

With more than 20 available digital gauges, the Mini Maxx V2 makes it easy to keep track of important engine and drivetrain parameters while driving. The tuner also provides access to diagnostic trouble code reading and clearing, speedometer calibration, speed-limiter adjustments, and other application-specific functions.

Vehicle compatibility and available features vary by year, engine, transmission, and configuration. Review the compatibility information below carefully to confirm that the Mini Maxx V2 supports your specific truck.

Interested in custom tuning options? Contact our sales team to learn more about available solutions for supported applications.

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Mini Maxx V2 Preloaded Tunes & Compatibility

The Mini Maxx V2 is supplied with vehicle-specific calibration files for supported applications. Available tuning options vary between truck platforms, model years, and configurations, allowing the tuner to provide an appropriate calibration for the vehicle being programmed.

Before ordering, verify your truck's year, engine, body configuration, and other applicable vehicle details against the compatibility chart below.

Important Application Notes

• 2019–2021 RAM applications currently have limited tuning availability and may be restricted to a single power level.
• Some LML GM Duramax applications may have limitations with boost-pressure monitoring.
• Dual-fuel-tank Cab & Chassis configurations are not supported.
• LGH applications are not supported.
• Features and available tuning options can vary by specific vehicle configuration.

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What Can the Mini Maxx V2 Do?

The Mini Maxx V2 is designed to provide a centralized interface for tuning, monitoring, and diagnostic functions on supported diesel trucks. Rather than relying on separate devices for each function, the Mini Maxx combines these capabilities into one in-cab system.

Real-Time Vehicle Monitoring

Monitor more than 20 engine and vehicle parameters through the Mini Maxx's digital gauge displays. This allows you to keep an eye on important operating information while driving and select the gauges most relevant to your application.

Diagnostic Code Functions

The integrated diagnostic functionality allows users to read and clear supported diagnostic trouble codes directly through the tuner, making it easier to identify and manage vehicle faults.

Speedometer Calibration

When tire-size or gearing changes affect the accuracy of the factory speedometer, the Mini Maxx V2 provides speedometer calibration functionality for supported applications.

Speed Limiter Adjustments

Depending on the vehicle application, the tuner can provide options for adjusting available top-speed settings.

Vehicle-Specific Tuning

The V2 uses application-specific tuning files rather than relying on a single universal calibration. Available performance settings depend on the truck's engine, model year, configuration, and the tune selected for that application.

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What's Included With the Mini Maxx V2?

Each Mini Maxx V2 package includes the hardware and accessories required for installation on supported applications:

• H&S Mini Maxx V2 tuner
• OBD connection box
• HDMI cable for connecting the display to the OBD box
• Power adapter
• Micro SD to USB adapter
• Fuse tap
• Mini Maxx mounting hardware
• USB cable
• Preloaded vehicle-specific tuning files

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Mini Maxx V2 Key Features

• 20+ digital gauges: Monitor a wide range of engine and vehicle parameters in real time.
• Vehicle-specific tuning: Select from the tuning options available for your particular application.
• Shift-on-the-fly capability: Supported applications can switch between available tuning levels without reflashing the PCM.
• DTC read and clear: Access supported diagnostic trouble codes directly from the Mini Maxx.
• Speedometer recalibration: Correct speedometer readings after compatible tire or gearing changes.
• Top-speed adjustment: Modify supported vehicle speed-limiter settings.
• Simple installation interface: Guided on-screen prompts help walk you through the setup process.
• Updateable software: Keep the tuner current using the supplied memory card and USB connection.
• Compact in-cab display: Keep tuning and monitoring information visible without requiring multiple aftermarket devices.

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Mini Maxx V2 Software Updates

The Mini Maxx V2 can be updated using the included memory card and USB connection. Keeping the tuner software current helps ensure that you have access to the latest available files and supported improvements for your application.

Always follow the manufacturer's update instructions and use the appropriate files for your specific Mini Maxx V2 configuration.

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Mini Maxx V2 Compatibility

SOTF = Shift On The Fly, allowing supported applications to change between available power levels without reflashing the PCM.

• 2018–2021 RAM Cummins applications require a bypass cable for installation. The cable is included when the appropriate RAM Cummins variant is selected.
• Stock pyrometer functionality is not available with the Mini Maxx V2 on applicable vehicles. An aftermarket EGT monitoring solution may be required.

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Mini Maxx V2 Power Levels

Unlike older Mini Maxx platforms that use a standardized set of published power stages, the V2 relies on application-specific tuning files. Available output depends on the vehicle, engine, calibration, selected tune, and supporting modifications.

This approach allows the available tuning to be matched more closely to the particular truck rather than treating every application as though it has identical requirements.

Actual performance results will vary. Horsepower and torque gains depend on factors including vehicle configuration, engine condition, fuel, modifications, operating conditions, and the calibration being used.

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Mini Maxx V2 Installation

Installation is designed to be straightforward, with the Mini Maxx providing on-screen prompts during the initial setup process.

1. Mount the Display

   Install the Mini Maxx display in a secure location where it can be viewed easily without interfering with safe vehicle operation.

2. Connect the OBD System

   Connect the supplied OBD cable to the vehicle's diagnostic port and connect the OBD box to the Mini Maxx display using the included HDMI cable.

3. Connect Power

   Connect the supplied power harness to an appropriate key-on power source and establish a secure ground connection.

4. Complete Initial Setup

   Turn the ignition to the ON position without starting the engine and follow the prompts displayed on the Mini Maxx screen.

5. Select the Appropriate Application

   Choose the vehicle information requested by the tuner, including the applicable year, engine, transmission, and configuration.

6. Load the Calibration

   Select the available tune for your application and allow the Mini Maxx to complete the programming process. Do not interrupt power or disconnect the tuner while programming is underway.

7. Configure Your Gauges

   Once installation is complete, customize the gauge display to show the vehicle parameters you want to monitor.

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Mini Maxx V2 Performance & Efficiency

The Mini Maxx V2 is built to give diesel truck owners greater control over available engine performance while also providing real-time information about how the vehicle is operating.

Fuel economy can vary significantly depending on the truck, driving habits, load, terrain, modifications, and calibration. While some applications may experience improvements in fuel consumption, results are not guaranteed and should be evaluated on an individual vehicle basis.