The H&S Mini Maxx Tuner is one of today's most powerful diesel performance tuning tools. It allows truck owners to delete restrictive emissions components, increase horsepower and torque, and optimize fuel economy.
Whether you drive a 6.0L Powerstroke or a 6.7L Cummins, choosing tuner between the Mini Maxx V1 and the Mini Maxx V2 depends on your truck’s model year and specific tuning needs.
What Does the Mini Maxx Tuner Do?
The Mini Maxx tuner by H&S Performance modifies your diesel truck’s engine parameters to deliver better power and efficiency. It supports DPF, EGR, and DEF delete for off-road use, giving you a smoother ride with fewer restrictions. This tuning device is compatible with major diesel engines like:
- Ford Powerstroke 6.0L, 6.4L, 6.7L
- Dodge Ram Cummins 5.9L, 6.7L
- Chevy/GMC Duramax 6.6L
It's a go-to choice for drivers seeking a reliable and comprehensive Mini Maxx delete tuner solution.
Mini Maxx V1 vs. Mini Maxx V2: Vehicle Compatibility
Understanding the specific coverage is essential for selecting the right hardware. While both versions excel in performance tuning, their supported engine ranges differ significantly due to communication protocols.
| Brand | Engine Model | Mini Maxx V1 (Classic) | Mini Maxx V2 (Modern) | Technical Notes |
|---|---|---|---|---|
| Ford | 6.0L Powerstroke | 2003 - 2007 | Not Supported | V1 uses older protocols required for 6.0L |
| 6.4L Powerstroke | 2008 - 2010 | 2008 - 2010 | The most stable delete solution for 6.4L | |
| 6.7L Powerstroke | 2011 - 2014 | 2011 - 2019 | V2 supports up to 2019 F250/F350 models | |
| 3.0L Powerstroke | Not Supported | Not Supported | Requires EZ Lynk or HP Tuners | |
| RAM | 5.9L Cummins | 2006 - 2007 | Not Supported | V1 is the rare choice for 5.9L deletes |
| 6.7L Cummins | 2007.5 - 2012 | 2007.5 - 2021 | 2018+ models require a SGW Bypass Cable | |
| GM | 6.6L Duramax LLY/LBZ | 2006 - 2007 | Not Supported | Only V1 supports these pre-LMM models |
| 6.6L Duramax LMM | 2007.5 - 2010 | 2007.5 - 2010 | Identical hardware compatibility | |
| 6.6L Duramax LML | 2011 - 2014 | 2011 - 2016 | V2 offers better stability for 15-16 models | |
| 2.8L Duramax | Not Supported | Not Supported | Requires EZ Lynk or EFI Live | |
| Nissan | 5.0L Cummins | Not Supported | Not Supported | Titan XD support requires EZ Lynk/EFI Live |
Differences between Mini Maxx V1 and V2
Mini Maxx V1: classic and stable for older models
The Mini Maxx V1 version is classic, especially suitable for older diesel trucks, such as the Ford Powerstroke 6.0L (2003-2007) and 6.4L (2008-2010) models. The V1 is well known among diesel enthusiasts for its stability and reliability. For owners looking for a complete hardware solution, a complete 6.4 powerstroke delete kit with tuner ensures maximum efficiency. This version supports adjustments for different driving conditions, ensuring ideal performance in other environments.
In addition, the Mini Maxx V1 also supports basic DPF and EGR deletion, effectively removing some of the emission components and unlocking more power output. Despite its simpler software interface and compatibility, the V1 is an excellent choice for older diesel trucks.

The legendary choice for older diesel trucks like the Ford 6.0L/6.4L and Cummins 5.9L. Known for its rock-solid stability, the V1 allows for seamless DPF/EGR deletes and significant horsepower gains for classic diesel performance.
Mini Maxx V2: modernized and upgraded for newer models
The Mini Maxx V2 version offers more features and greater performance tuning capabilities than the V1. Not only does the V2 support more modern models, such as the Ram Cummins 6.7L (2013-2018) and the Chevrolet Duramax, but it also introduces newer software and a user interface that makes tuning more intuitive and easy to follow.
The V2 extends compatibility with more customizable tuning options, allowing owners to tailor vehicle performance to different needs precisely. Especially in modern diesel vehicles, the V2's DPF, EGR, and SCR deletion features are more advanced, providing more efficient performance optimization.

Engineered for modern power. This upgraded V2 version supports newer models including 2013-2018 RAM Cummins and Duramax. Features an intuitive interface, wireless updates, and advanced SCR/DEF deletion for ultimate off-road optimization.
Diagnostic Capabilities: Clearing DTCs
One of the most valuable features of the Mini Maxx series is the ability to read and clear Diagnostic Trouble Codes (DTCs). This prevents your truck from entering "Limp Mode" and saves you costly trips to the dealer.
Common Codes Cleared (V1 & V2)
- P0XXX Series: Generic codes related to sensors, fuel pressure, and turbo boost issues.
- P0401/P0402: Insufficient or excessive EGR flow (crucial for EGR deletes).
- P242F: DPF ash accumulation or restriction codes.
- Transmission Codes: Temporary errors related to shift logic and pressure.
Enhanced Clearing Capabilities of Mini Maxx V2
The V2 uses modernized communication protocols to handle complex "anti-tamper" codes found in 2015+ vehicles:
- UXXXX Series: Better management of communication bus errors caused by aftermarket hardware.
- Service DEF System Warnings: Forced clearing of the countdown timers related to DEF/SCR failures.
- Limp Mode Removal: Effectively clears the "Speed Limited to 50 MPH" alert on modern RAM and Ford trucks.
- Permanent DTC Bypass: V2 firmware is more adept at bypassing permanent code validation in newer ECUs.
Key Features of H&S Mini Maxx Tuner (V1 and V2)
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Shift-on-the-Fly Tuning: Adjust power levels instantly while driving.
- Delete Capabilities: Supports DPF, EGR, DEF, and SCR removal for off-road use.
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Real-Time Monitoring: Monitor 20+ engine parameters live.
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Diagnostic Tools: Read and clear trouble codes with ease.
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Pre-loaded Tunes: These come with multiple tuning options for different driving needs.
- User-Friendly Interface: Easy-to-read display with simple navigation.
Mini Maxx V1 vs V2: Which Tuner is Best for Your Truck?
| Feature | Mini Maxx V1 | Mini Maxx V2 |
|---|---|---|
| Supported Engines | 6.0L / 6.4L Powerstroke, 5.9L Cummins | 6.7L Cummins, 6.7L Powerstroke |
| Interface | Classic LCD | Updated UI with wireless updates |
| Delete Capabilities | DPF, EGR | DPF, EGR, DEF, SCR |
| Price Range | Around $689 | Around $999 |
| Ideal For | Older diesel trucks | Newer diesel models (2013+) |
The Mini Maxx V1 tuner is stable, budget-friendly, and perfect for older trucks. The Mini Maxx V2 tuner includes more advanced features and broader compatibility.
How to Install the Mini Maxx Tuner on Your Diesel Truck
Mini Maxx V1 Tuner Installation Guide
Mini Maxx V2 Tuner Installation Guide
⚠️ Note: This tuner is intended for off-road use only. Be sure to comply with your local emissions regulations.
Which One Should You Choose?
Whether using a Mini Maxx V1 for your classic diesel or a modernized Mini Maxx V2 on a newer model, both provide exceptional performance improvements. With support for major diesel brands and powerful delete options, the Mini Maxx tuner remains a premier tool for unleashing your truck's full potential.
Choose the Mini Maxx V1 tuner if:
You own a classic diesel such as the 2003–2007 Ford 6.0L, 2006–2007 RAM 5.9L Cummins, or early Duramax LLY/LBZ models. The V1’s legacy protocols are specifically designed to communicate with these older ECM architectures.
Choose the Mini Maxx V2 tuner if:
- You own a late-model truck, especially 2015–2016 Duramax LML or 2017–2019 Ford 6.7L Powerstroke models.
- You require faster flashing speeds and a more stable connection during the tuning process.
- You desire a high-resolution display with more responsive button feedback and improved navigation.
- You own a 2013–2021 RAM 6.7L Cummins (note: 2018+ requires an additional SGW bypass cable).
The modernized internal hardware and improved power management make the V2 the superior choice for daily reliability and long-term ECU safety on supported 2008+ vehicles.
Mini Maxx Tuner FAQs
Q1: What does the Mini Maxx tuner do?
A1: The Mini Maxx tuner is a performance device for diesel trucks that enhances horsepower, torque, and fuel economy. It also allows emissions system deletes (DPF, EGR, DEF) for off-road applications.
Q2: How much horsepower can the Mini Maxx tuner add?
A2: The Mini Maxx tuner can provide gains of up to 150 HP, depending on the vehicle, engine, and tune.
Q3: What’s the difference between Mini Maxx V1 and V2?
A3: The V1 is ideal for older models and is known for tuning stability. The V2 features modern software, wireless updates, and broader compatibility with newer trucks.
Q4: Can a Mini Maxx tuner be unlocked?
A4: Yes, unlocking is possible via software updates or manufacturer support, giving you access to advanced tuning features.
Q5: Will a tuner make my truck faster?
A5: Absolutely. A Mini Maxx tuner improves throttle response, torque delivery, and engine performance.
Q6: Is the Traxxas Mini Maxx related to this tuner?
A6: No, the Traxxas Mini Maxx is a 1/10 scale RC truck. It is not related to diesel tuners.
Q7: How do I install the Mini Maxx tuner?
A7: Connect it to your truck’s OBD-II port, select your settings, and follow the guided on-screen process for quick setup.
Q8: Is it compatible with all diesel trucks?
A8: The Mini Maxx tuner supports popular engines like Powerstroke, Cummins, and Duramax. Compatibility depends on the engine year and model.
Q9: Is the Mini Maxx tuner street legal?
A9: No, it's for off-road use only. Using it on public roads where emissions laws apply may violate regulations.
Q10: What tuning options are available?
A10: Mini Maxx offers customizable tunes for towing, fuel efficiency, and power boosts. It also supports DPF/EGR/DEF delete functions.

2 comments
will the Mini-Maxx v1 produce black sutt to come out of my truck?
what is the max horsepower i can add for a 6.0 power stroke?