Mini Maxx Tuner V2 | DPF/DEF/EGR Delete Tuner

Mini Maxx Tuner V2 | DPF/EGR/DEF Delete Tuner

As an authorized H&S Performance MINI MAXX dealer, Tuner Depot provides the genuine H&S Mini Maxx Tuner V2 the proven, integrated solution for off-road and race applications, offering a balance of power, efficiency and real-time control in a single unit. As the latest evolution of the H&S Mini Maxx tuner, the V2 delivers noticeable gains in horsepower and torque while helping improve fuel economy when properly set up. The Mini Maxx V2 tuner supports complete DPF, EGR and DEF system removal including all related sensors without causing check engine lights or persistent fault codes.

Built with ease of use in mind this mini maxx tuner features guided on-screen installation, digital gauges for monitoring over 20 engine parameters and the ability to read and clear diagnostic trouble codes. Internet updates via SD card keep the system current, making it a reliable choice for owners of Cummins, Power Stroke and Duramax diesel trucks who want dependable performance from an H&S Mini Maxx without unnecessary complexity.

For drivers looking to push performance further, custom tuning options are also available contact our sales team for details 

MINI Maxx V2 Pre-Loaded Tunes and Compatibility

The mini maxx V2 tuners come with tunes specifically designed for deleting DPF, DEF and EGR. It's an easy choice for anyone looking for a straightforward delete solution.

Please Note:

• 2019-2021 RAM trucks have just one power level, but new tunes are coming. Currently limited to 20 PSI.
• LML GM Duramax models don’t register boost levels. A fix is on the way.
• Dual fuel tanks on Cab & Chassis are not supported.
• LGH trucks are not supported.

Check for All known Issues Before Ordering

What Does the H&S Mini Maxx V2 Do?

The Mini Maxx V2 boosts your truck’s performance by increasing power, torque, and fuel efficiency. With it, you can delete several emissions systems, including:

DPF (Diesel Particulate Filter):

The Mini Maxx lets you remove all components of the DPF system while disabling the related sensors and eliminating any check engine lights.

EGR (Exhaust Gas Recirculation):

It disables the EGR function and turns off any related DTCs. Whether you leave the EGR installed or use an EGR block kit, the Mini Maxx has you covered. No more leaks from the EGR!

DEF (Diesel Exhaust Fluid):

This tuner shuts off the urea injection system entirely, so you can remove the DEF tank and sensors, reducing the overall weight of your truck.

With the Mini Maxx, ULSD (Ultra-Low Sulfur Diesel) becomes optional, allowing you to run high-sulfur diesel fuels if you prefer.

What’s Included with the Mini Maxx V2?

Here’s everything you get in the box:

• H&S Mini Maxx Tuner
• OBD Connection Box
• HDMI Cable (for connecting the tuner to the box)
• Power Adapter
• Micro SD to USB Adapter
• Fuse Tap
• Mini Maxx Tuner Mount
• USB Cable
• Pre-loaded emission removal tunes

This tuner is designed specifically for deleted trucks and will not support emissions systems. This dpf delete tuner is for off-road and race use only.

Key Features of MiniMaxx tuner:

• Mini Maxx V2 allows the removal of the DPF/EDR/DEF systems and ALL related sensors.
• Top speed limiter adjustments or removal.
• Speedometer recalibration for non-stock tires or gears.
• Full EGR system deletion without triggering trouble codes.
• Option to disable the EGR without removing any parts.
• Diagnostic Trouble Code (DTC) read and clear functionality.
• Internet updateable with the included SD memory card and USB cable.
• Digital gauges to monitor over 20 parameters in real time.

Update Mini Maxx V2 Quickly and Easily

Update Mini Maxx V2 with ease by getting the latest software directly from the manufacturer’s website. Whether you run a Dodge Cummins 6.7L, a Ford Powerstroke 6.4L or use a Ford 6.7 tuner, you can quickly access the newest Mini Maxx V2 updates to keep your setup current.

Get the latest MINI MAXX V2 updates

Mini Maxx V2 compatibility

SOTF

Shift On The Fly (adjust power levels without re-flashing the PCM)

• Important for 2018–2021 RAM Cummins owners: A bypass cable is required for installation. This cable is included in the box when you select the RAM Cummins (2018–2021) variant before adding the product to your cart.
• Note: Stock pyro won’t work with the Mini Maxx V2. To monitor exhaust gas temperatures, you’ll need to install a BD Pyrometer kit 

MINI MAXX V2 Power Levels

The Mini Maxx V2 does not use fixed, published horsepower presets (such as “Mild / Wild / Hot”) like earlier versions. Instead, power output is controlled through vehicle-specific tuning files, allowing adjustable performance based on the selected tune, engine platform and supporting modifications.

Depending on application, Mini Maxx V2 tuning is commonly reported to provide moderate to high performance gains with increases typically ranging from approximately +50 HP up to +150 HP and in some cases higher when paired with advanced tuning configurations. Actual results vary by vehicle year, engine and calibration used.

The V2 platform emphasizes flexibility and customization rather than fixed power stages like the V1, allowing users to balance power, drivability and efficiency through selectable tuning options.

MINI MAXX V2 Install Instructions

Mini Maxx V2 – Short Installation Instructions

1. Mount the Display
   Secure the Mini Maxx V2 screen on the dashboard or windshield where it is clearly visible and does not obstruct driving.
2. Connect OBD-II Cable
   Plug the supplied OBD-II cable into the vehicle’s diagnostic port under the driver-side dash & run the provided HDMI cable from the OBD box to the tuner's HDMI port.
   
3. Connect Power
   Connect the power harness to a key-on fuse source to have the Mini Maxx power on and off with ignition. Ensure a solid ground connection.
4. Power On & Initial Setup
   Turn the key to ON (engine off). Follow on-screen prompts to select vehicle year, engine, transmission, and emissions status.
5. Select Tune Level
   Choose the desired power level (Stock, 80 HP, 160 HP, or 250 HP if supported). Allow the tuner to download and flash files—do not interrupt.
6. Restart Vehicle
   When prompted, turn the key off, then start the engine to complete installation.
7. Set Gauges & Drive Mode
   Configure gauge displays and select Street, Tow, or Performance mode.

Important: Maintain stable battery voltage and never disconnect the tuner during flashing.

Watch the Mini Maxx V2 install Instructions video

Get quick Starter Guide 

Refurbished Mini Maxx V2 Tuner

For customers interested in a refurbished option, the Mini Maxx V2 Refurbished provides the same performance and pre-loaded tunes as the new unit, with fully tested and inspected components.

Condition: Minor scratches/slightly used – each unit is tested & inspected before repackaging.

Warranty: 30-day return/exchange on defective units only

Save on Fuel with the MINI MAXX Diesel Tuner

The Mini Maxx is not only about performance but also about fuel efficiency. Many truck owners report significant gains in mpg, with some seeing up to a 5 mpg improvement when paired with the right DPF delete pipe and EGR block-off kit.

While H&S Performance Mini Maxx V2 tuners are well-known to be a more balanced and reliable option for daily use. Unlike other diesel tuners that might require additional setup and fine-tuning, the Mini Maxx V2 comes ready to use with pre-loaded tunes for DPF, DEF and EGR deletes. This means you can avoid the extra hassle and get on the road faster.

Please Note: The vehicle must be tuned prior to deleting the emissions systems.

Legal Notice: The Mini Maxx V2 diesel tuner is designed for off-road and race use only. Always make sure you’re in compliance with local emissions regulations.