Mini Maxx Diesel Tuners

Why Does Your Diesel Truck Need a Tuner?

The Factory Calibration Leaves Power and Towing on the Table

Stock calibrations are written for the least common denominator: worst fuel, laziest maintenance, strictest emissions envelope. That means soft throttle response, early torque management, and a transmission strategy that hunts on grades. A proper tuner unlocks the power the engine already has, sharpens shifts, and gives you a Tow level built for gross combined weight instead of the showroom floor.

Deleted Hardware Without Tuning Is a Roadside Breakdown

Here is the mistake we see constantly: a guy bolts on the best DPF delete kit he can find, skips the tuner, and drives it until the ECM figures out the DPF and EGR are gone. Then come the codes, the regen faults, the derates, and the limp mode. The ECM has to be told the new configuration, and the Mini Maxx carries the delete calibrations that shut those strategies off so the truck runs like it was engineered that way.

You Are Flying Blind Without Gauges

The factory cluster on most of these trucks shows almost nothing that matters. EGT, boost, transmission temp, fuel rail pressure: the four numbers that tell you whether a tow run is healthy or about to get expensive. The Mini Maxx puts all of them on a live dash-mounted display, and that monitoring alone has saved more head gaskets and transmissions than any other upgrade we sell.

What Can a Mini Maxx Diesel Tuner Solve?

Delete Calibrations That Actually Run Clean

The Mini Maxx carries full DPF, EGR, and DEF delete calibrations, with the V2 extending coverage through the 2021 model year and switching power levels faster through its updated hardware platform. Once flashed, the ECM stops commanding hardware that is no longer there, which means no codes, no derates, and no phantom regens on a deleted truck.

Power Levels You Can Switch While Rolling

Stock for the drive to work, Tow for the 15,000 pound trailer, Street for the empty haul home, Hot for the track day: all switchable on the fly from the driver's seat. On supported platforms the Mini Maxx reaches 300 horsepower over stock in its top level. The V2's faster processor makes those level changes nearly instant.

A Full Gauge Package in the Same Box

Beyond tuning, the Mini Maxx monitors more than 20 live parameters through its OEM-grade sealed harness and high-contrast display, reading both generic and manufacturer-enhanced data plus trouble codes. It even works as a gauge-only monitor on a stock truck, which makes it the cheapest insurance a towing engine can buy.

Shop Diesel Tuners by Truck Make & Engine Fitment Guide

• Mini Maxx V1 for 2003-2016 Ford Powerstroke 6.0L / 6.4L / 6.7L - Fits the 6.0L, 6.4L, and 6.7L Powerstroke in Ford F-250 and F-350 Super Duty trucks (2003-2016). The classic delete tuner for 6.0 and 6.4 owners, carrying EGR and DPF delete calibrations for the whole three-engine run.
• Mini Maxx V2 for 2008-2019 Ford 6.4L / 6.7L Powerstroke - Fits the 6.4L and 6.7L Powerstroke in Ford Super Duty trucks (2008-2019). Updated hardware with faster shift-on-the-fly response for the DPF-era Fords.
• Mini Maxx V1 for 2007-2010 Duramax LMM - Fits the 6.6L LMM in Chevy and GMC Silverado HD pickups (2007-2010). EGR and DPF delete calibrations for the first DPF-era Duramax.
• Mini Maxx V1 for 2011-2014 Duramax LML - Fits the 6.6L LML in Chevy and GMC Silverado HD pickups (2011-2014). Delete tuning for the SCR-era Duramax; note that on the LML platform power level changes are not switchable on the fly.
• Mini Maxx V2 for 2007.5-2016 Duramax LMM / LML - Fits the 6.6L LMM and LML in Chevy and GMC HD trucks (2007.5-2016). One V2 covering both Duramax generations in the barn.
• Mini Maxx V1 for 2007.5-2012 Cummins 6.7L - Fits the 6.7L Cummins in Dodge Ram 2500/3500 (2007.5-2012). Delete calibrations for the early 6.7 trucks, from the 2007.5 launch through the 2012s.
• Mini Maxx V2 for 2007.5-2017 Cummins 6.7L - Fits the 6.7L Cummins in Dodge Ram 2500/3500 (2007.5-2017). Full DPF, EGR, and DEF delete coverage for the fourth-generation Rams.
• Mini Maxx V2 for 2018-2021 Cummins 6.7L - Fits the 6.7L Cummins in Dodge Ram 2500/3500 (2018-2021). The tuner for the late fourth-gen trucks, carrying delete calibrations through the end of the platform.
• Mini Maxx V1 Multi-Vehicle Tuner (2007-2016) - Fits Cummins, Powerstroke, and Duramax trucks (2007-2016). One tuner, up to 300 horsepower, for shops and multi-truck fleets running mixed platforms.
• Mini Maxx V2 Multi-Vehicle Tuner (2007-2021) - Fits Cummins, Powerstroke, and Duramax trucks (2007-2021). The V2 multi-platform configuration with EGR, DPF, and DEF delete support and the fastest level switching.

Why Choose EGR Performance?

The industry standard for high-performance diesel reliability.

Premium Quality & Rigorous Testing

Our EGR, DPF, and CCV delete kits are engineered from premium-grade materials and subjected to brutal quality control and field testing. Unlike generic alternatives, our products are built to withstand extreme heat and pressure, delivering unmatched durability and long-term stability when your rig needs it most.

20 Years of Proven Diesel Expertise

We aren't just selling parts. We live in this industry. With two decades of hands-on experience providing specialized modification solutions for heavy-duty truck owners, our upgrades have been extensively proven across every driving environment, from daily towing to high-performance tracks.

Industry-Leading Standards

We work hand-in-hand with top-tier industry partners and reputable organizations. Every product we design, test, and ship meets or exceeds strict industry standards, ensuring your Powerstroke, Cummins, or Duramax gets the exact precision it deserves.

Real Results, Proven Track Record

Thousands of diesel owners trust us to unlock their engine's true potential. Our massive library of positive customer feedback and successful build case studies proves one thing: our kits deliver real horsepower, lower EGTs, and flawless reliability in the real world.

FAQs About Mini Maxx Diesel Tuners

What does a Mini Maxx diesel tuner do?

The Mini Maxx is two tools in one box: a performance calibrator and a full gauge monitor. On the tuning side, it flashes the ECM with selectable power levels- Stock, Tow, Street, and Hot- that you can switch on the fly on supported platforms, with ratings reaching 300 horsepower over stock.

On the monitoring side, it displays more than 20 live parameters, including EGT, boost, transmission temperature, and fuel rail pressure, and it reads and clears trouble codes. Plug it into the OBD port through the sealed OEM-grade harness, mount the high-contrast display where you can see it, and you always know what the engine is doing.

What is the best delete tuner for diesel trucks?

For trucks from 2007 through 2021, the community answer has not changed in a decade: the H&S Mini Maxx is the gold standard for delete tuning. It carries full DPF, EGR, and DEF delete calibrations across the Big Three platforms, which is exactly what a deleted truck needs to run without codes or derates.

The V2 is the current standard, with updated hardware, faster shift-on-the-fly switching, and coverage through the 2021 model year. The V1 remains a proven, budget-friendly option for the older applications it covers. Pick the generation that matches your truck, and you are buying the platform the entire delete industry was built around.

What is the difference between the Mini Maxx V1 and V2?

The V1 is the classic unit that built the Mini Maxx reputation, covering the older applications: 2003-2016 Powerstroke, 2007-2010 LMM and 2011-2014 LML Duramax, and 2007.5-2012 Cummins. The V2 is the updated hardware platform, with a faster processor for quicker power level changes, more horsepower on supported applications, and extended coverage through 2021.

Practical differences come down to truck year and features. If your truck falls inside both coverage windows and you want the newest hardware, the V2 is the one. If you are running an early 6.0 or a 2007.5-2012 Cummins, the V1 does the same job it has done for years.

Which tuner do I need for my 6.7 Cummins Ram?

Match the tuner to your model year. The V1 covers 2007.5-2012 Rams, the first six years of the 6.7 platform. The V2 covers 2007.5-2017 in one configuration and 2018-2021 in another, so the fourth-gen DEF-era trucks are split at the 2018 model year changeover.

For a Ram 2500 or 3500 that is already deleted or getting deleted hardware, the Mini Maxx shuts off the EGR, DPF, and DEF strategies and adds tow-specific power levels plus transmission temperature monitoring, which every 68RFE owner should watch. Our support team can confirm the right unit from your VIN.

Will the Mini Maxx work on a 6.0 or 6.4 Powerstroke?

Yes, this is one of the platform's home turfs. The V1 covers the whole 2003-2016 Ford run, meaning the 6.0, the 6.4, and the early 6.7 Powerstrokes all flash from the same tuner generation. The V2 picks up the 6.4 and 6.7 from 2008-2019.

For 6.0 owners, the combination of an EGR delete tune and proper monitoring is the single best reliability money you can spend on that engine, since the Mini Maxx watches EGT and oil temps the factory cluster barely hints at. 6.4 owners get the DPF and EGR delete calibrations plus shift-on-the-fly power levels.

What tuner should I use for a deleted LMM or LML Duramax?

The V1 is available in dedicated LMM (2007-2010) and LML (2011-2014) configurations, and the V2 covers both platforms from 2007.5-2016 in one unit. All of them carry the EGR and DPF delete calibrations your GMC or Chevy HD needs to run clean with the hardware gone.

One Duramax-specific note: on the LML, power levels are not switchable on the fly, so plan your level changes at a stop. Everything else, delete calibrations and full gauge monitoring, works the same as the other platforms.

Can I run a Mini Maxx on a stock truck with emissions intact?

Yes, and plenty of owners do exactly that. The Mini Maxx works as a gauge-only monitor on a stock truck, displaying EGT, boost, transmission temp, and rail pressure while reading and clearing codes, all with the factory calibration left completely alone.

That makes it a smart buy for emissions-intact trucks that tow heavy, since the monitoring functions work regardless of what is in the exhaust. You get the visibility today, and if the truck's configuration ever changes, the tuning capability is already sitting on your dash.

Do I need to delete hardware too, or does the tuner do it all?

The tuner and the hardware are two halves of one job, and neither works alone. The tuner reprograms the ECM, so it stops commanding the DPF, EGR, and DEF systems and stops setting the codes that come with them. The hardware- the EGR delete kit, DPF delete pipes, and blockers- physically removes the components from the truck.

Hardware without a tuner codes and derates. A tuner without hardware leaves the components in place doing nothing. Plan the job as a package: delete hardware, the calibration, and a tuner harness plug kit to seal the connectors the removed components leave open.

What power levels and features does the Mini Maxx offer?

Every Mini Maxx carries four core levels: Stock for factory power, Tow for heavy trailers, Street for daily driving, and Hot for maximum output, with the top level reaching 300 horsepower over stock on supported platforms. Level changes happen on the fly from the driver's seat on most applications.

Alongside tuning, you get the full monitoring suite: more than 20 live parameters, definable gauges, and trouble code reading across generic and manufacturer-enhanced data. Between the power levels and the gauges, it is the most functional single device you can bolt into a diesel cab.

Are diesel delete tuners street legal?

Delete tuners are sold for competition and closed-course off-road use only. Installing delete calibrations on a pollution-controlled vehicle registered for on-highway use violates the Clean Air Act and can carry substantial EPA fines, so these products are not legal for street use in the United States.

Emissions-intact use, gauge monitoring on a stock truck with the factory calibration in place, is legal everywhere. Fitment is platform- and year-specific across the 2003-2021 coverage window, so confirm your truck against the fitment guide or contact our 24/7 support for the correct unit. Every order ships free from our US warehouses, carries a 1-year warranty, and is backed by a 45-day return policy if the fitment is not right.