H&S Mini Maxx Tuner: Which Version Fits Your Ford, Ram or Duramax?

Which Mini Maxx Version Fits Your Truck?

The H&S Mini Maxx V1 for Ford Powerstroke 2003-2014 fits 2003 through 2014 pickups with the 6.0L, 6.4L or 6.7L Powerstroke, plus the 6.4L Cab & Chassis. The Ram version fits 2006 through 2012 Ram pickups with the 5.9L or 6.7L Cummins, not Cab & Chassis. The GM/Chevy version is built for 2011 through 2014 Silverado and Sierra pickups running the 6.6L LML Duramax, not Cab & Chassis.

Three trucks, three tuners. Here's the thing — you don't really pick a Mini Maxx so much as your truck picks it for you. Get the match right here and everything after this section gets a whole lot easier.

Reading the model year and engine size off your own truck

Don't trust memory on this one. Pop the hood, look at what's actually sitting under there, and check it against the truck's paperwork before you pick anything. Write the year and the engine size down and keep that note next to you while you read the rest of this.

Picked the truck up secondhand? Check it anyway. The last owner's story isn't a spec sheet.

Ford, Ram or GM: one version per platform

Let's break it down by badge. Find your make in the table, then run your finger across to the years and the engines. If your truck lands in a row, that row is your tuner.

If it lands in none of them, none of these three is the right fit. That's worth knowing before you spend a dime. Two trucks in the shop? Run the check for each one separately, even if they wear the same badge.

Where each fitment range stops

Edge years are where people get burned. If your truck sits right at the first or last year of a range, slow down and confirm it twice. Which row does your truck sit in? Lock that in, then keep reading, because the engine generation settles the rest.

Which Engine Generations Does Each Version Cover?

Engine generation is the real dividing line. The Ford version covers the 2003-2007 6.0L, the 2008-2010 6.4L and the 2011-2014 6.7L Powerstroke. The Ram version covers the 2006-2007 5.9L and the 2007.5-2012 6.7L Cummins. The Duramax version is built for the 6.6L LML Duramax in 2011-2014 GM/Chevy trucks. Read the engine size off your truck, then match the generation.

The three Powerstroke generations on one Ford device

One tuner, three very different engines. That's a lot of ground for a handheld. The H&S Mini Maxx V1.0 Delete Tuner covers three generations of Ford Powerstroke diesel in one handheld device — the 2003–2007 6.0L, the 2008–2010 6.4L, and the 2011–2014 6.7L — with the delete tune preloaded and ready to install.^[1]

That's the beauty of a wide bracket: less to get wrong. Just make sure the engine you wrote down earlier is one of those three.

The mid-2007 Cummins changeover

Cummins guys, pull up a chair. This part is for you. The H&S Mini Maxx V1.0 Delete Tuner for the Ram 5.9 and 6.7 Cummins covers two Cummins generations in one handheld device, the 2006–2007 5.9L and the 2007.5–2012 6.7L, with tunes preloaded and ready to install the day the box arrives.^[2]

Right at the changeover, go by the engine, not the calendar. Check the engine size under the hood before anything else, and you'll never wonder which side of the line you're on.

The LML-only Duramax version

The GM side keeps it simple. The H&S Mini Maxx V1.0 delete tuner for 2011–2014 GM/Chevy 6.6L LML Duramax is a handheld device that kills the emissions codes and gives you four power levels — preloaded, plug-and-play, and ready the day it lands on your doorstep.^[3] One bracket, no guesswork.

Does Your Cab Style or Transmission Change the Answer?

Yes, it can, starting with the Ford. This fits the F-250, F-350, F-450, and F-550 across those years; only the 2008–2010 6.4L Cab & Chassis works with this tuner.^[1] Cummins owners, read the next two lines. It's compatible with 2500 and 3500 Cummins models only and will not fit Cab & Chassis trucks.^[2] Transmission tuning is available for 68RFE models only.^[2]

Pickup or Cab & Chassis: checking your body style

Plenty of guys match the year, match the engine, and stop there. That's exactly where body style catches people out.

Duramax owners, this one is yours. Fits LML pickup models — Silverado and Sierra 2500/3500 — but not Cab & Chassis.^[3]

Not sure which one you've got? Go by how the truck left the factory, not by whatever's bolted behind the cab today.

The one Ford Cab & Chassis exception

Read the Ford line in the answer above twice if your truck wears anything other than a pickup bed. That 6.4L exception is narrow. Make sure your truck sits inside it before you go any further, because a near miss here is still a miss.

Not sure? Pull up the build sheet and look before you guess.

Which Ram transmission gets transmission tuning

Which transmission is bolted behind your Cummins? Find out before you count on transmission tuning. It's a quick question that saves a lot of head-scratching.

Not sure what's behind your engine, or which body style your truck left the factory as? Call us at (888) 830-2588 and we'll sort it out with you.

What Does the Delete Tune Shut Off?

The tune shuts down all emissions monitoring, so the codes, limp mode, and regen cycles stop.^[1] It strips the DPF, EGR, DEF, CAT, SCR, DOC, and EGT from your programming.^[2] Duramax owners, the next line is yours. You do have to physically remove the DPF, and EGR removal is optional but highly recommended for the best reliability.^[3]

What stops once the tune is loaded

Picture the truck you've been fighting with. The delete tune shuts off emissions monitoring across the board — DPF, EGR, DEF, CAT, SCR, DOC, and EGT — so the truck stops looking for hardware that's no longer there.^[3] Think of it as the truck finally dropping an argument with parts it doesn't have anymore.

What the tune shuts off in software

Let's break down the alphabet soup the tune deals with. It clears the DPF (Diesel Particulate Filter), EGR (Exhaust Gas Recirculation), DEF (Diesel Exhaust Fluid), CAT (Catalytic Converter), SCR (Selective Catalytic Reduction), DOC (Diesel Oxidation Catalyst), and EGT (Exhaust Gas Temperature) from your programming.^[1] That's a long list for one plug-in.

New to the letters? Don't sweat it. You'll have them down before your first event.

What still has to come off the truck

A lot of guys assume the tuner does the whole job. It doesn't. A tune changes what the truck is looking for; it can't unbolt anything.

On the Powerstroke, one job stays on your list. You have to delete the DPF; the rest is shut off in software, so you can unplug sensors where it applies.^[1]

On the LML, the EGR is your call. Re-read the last line of the answer above and you'll see which way the recommendation leans.

What's Included in the Box?

Ford owners first. The box includes the Mini Maxx with all cables and accessories, the preloaded DPF delete tune, and official install instructions.^[1] Now the LML box. In the box you get the Mini Maxx V1.0 with all required cables and accessories, the DPF delete tune preloaded on the device, and official installation instructions.^[3]

What comes in each version's box

Cummins owners, here's yours. The box includes the Minimax V1.0 with all required cables and accessories, the delete tune preloaded on the device, and official installation instructions.^[2] Short list, and that's the point.

Fewer pieces, fewer places for the job to go sideways. Lay everything out on the bench before you walk out to the truck. That way you're not hunting for a cable halfway through the job.

Why the tune arrives already on the device

We get it — nobody wants to spend the night before an event hunting down a file. That's why a tune that's already on the device matters more than it sounds. Open the box, plug in, go.

Keeping the install instructions with the truck

Those official instructions aren't packing filler. Keep them in the glovebox or the trailer toolbox. You'll want them again the day you swap levels or chase a question between rounds.

Snap a photo of the pages with your phone too. Paper gets greasy fast in a race trailer.

What Does the Mini Maxx Screen Show?

Take the LML version first. Once it's in, the Mini Maxx stays as a permanent gauge display — a hi-resolution screen that tracks up to 20 metrics, shows up to four at once, runs automatic EGT-based safety backdown, and handles speedometer calibration for aftermarket tires or gearing.^[3]

Choosing which four readings to watch

So which readings earn a spot on your screen? That depends on the build. A sled-pull truck and a trail rig don't sweat the same numbers, so set the screen up for the job your truck actually does.

Start with EGT. Pick the rest from the readings you'd really react to, and let everything else wait.

How the EGT safety backdown works

Exhaust gas temperature is the number that keeps diesel guys up at night. Ford owners, here's your screen. It doubles as a live diagnostic display — a hi-resolution digital gauge that tracks up to 20 metrics and shows up to four at once, with automatic EGT-controlled safety backdown that pulls power if exhaust temps spike, plus speedometer calibration and speed-limiter adjustment.^[1]

Think of that backdown as a spotter with a hand on your shoulder. You still drive the truck; it just taps you before things get ugly.

Recalibrating the speedometer after a tire change

Went bigger on tires or swapped gears on the trail rig? That's exactly the job the calibration is there for. Do it right after the swap, before you forget, and you won't be second-guessing the screen later.

Can You Change Power Levels or Go Back to Stock?

Cummins first. The 6.7L models also get Shift on the Fly, so you change power levels from a button without re-flashing.^[2] Now the LML. There's no shift-on-the-fly, so you change levels by re-flashing from the device.^[3] Then the Powerstroke. You can reflash back to factory anytime, and only one truck runs the tune at a time.^[1]

Switching levels on the Ram 6.7L

That button is a game-changer between rounds. No re-flash while the next truck hooks up to the sled.

Running the 5.9L instead? Ask us before you count on that button. Know which level you want before you stage, and leave the fiddling for the pits.

Re-flashing to change levels on the Duramax

No button on the LML, so plan your level changes in the pits, not in the staging lanes. Pick the level you want for the day, flash it, and leave it alone. Simple beats clever here.

Write down which level is on the truck after every flash. A few weeks later you won't remember.

Flashing back to factory and moving to another truck

This is the part people forget. If the Powerstroke is getting sold or the tuner is moving to your next build, flash it back first. Do it before the truck leaves the shop, not after.

Running the Cummins or the LML version? Give us a call before you plan a move between trucks, so you know exactly where you stand.

What Should You Expect During Installation?

We suggest that you have ALL codes cleared before reprogramming your ECM with our tuners. If the codes you have are not related to the emission system, you must get your truck fixed and clear the codes prior to programming and flashing the ECM. Best practice is to have your truck inspected by a professional diesel mechanic prior to installation.

Clearing codes before you start

Buckle up, because this is the boring step that matters most. Scan the truck, write down what comes up, and sort the codes into two piles. Emissions codes go on one pile; anything else gets fixed before you flash a thing.

It's tedious. It's also the step that keeps a quick flash from turning into a lost weekend.

Finding the OBD-II port

Sit in the driver's seat with a flashlight before you start. Fumbling for the port with the tuner in your other hand is nobody's idea of fun.

On the Ram, here's where to look. It plugs into the OBD-II port under your steering wheel and reflashes the ECM directly, with no laptop and no shipping your ECM.^[2]

Powerstroke owners, yours goes like this. Plug it into the OBD-II port and it reflashes your ECM; no laptop software, no shop, no ECM removal.^[1]

And the LML. It plugs into your OBD-II port and reflashes the ECM directly, so there's no shipping the ECM anywhere and no laptop software.^[3]

What happens during the flash

Here's the order of work, start to finish. Skip a step and you'll feel it later.

1. Have a diesel mechanic you trust look the truck over.
2. Scan the codes, fix anything outside the emission system, and clear the lot.
3. Plug the tuner into the OBD-II port.
4. Let the flash finish before you touch anything else.

Then pick your level and take it to the dyno. A little prep beats an afternoon of chasing codes.

What Are the Return Terms on the Mini Maxx?

Powerstroke first. The Mini Maxx is returnable within 30 days if undamaged, subject to restocking fees.^[1] Then the LML. Returnable within 30 days if undamaged; restocking fees apply.^[3] And the Cummins. Install is plug-and-play, and there's a 30-day return policy on tuners that aren't damaged or internally manipulated, subject to restocking fees.^[2]

The 30-day window

That window goes quicker than you think when the truck is apart waiting on parts. Check the fit the day the box shows up. You'll know well inside the window whether you've got the right version.

Don't let the box sit in the corner of the shop for weeks.

What counts as undamaged

Treat the tuner like it's going back until it's on the truck and working. Keep the box, the cables and the accessories together. And don't open the device up, period.

Keep the receipt with it. Future you will be glad you did.

Restocking fees

The cheapest return is the one you never make. That's why the fitment check up top is worth your time. A wrong version costs you time and money that should've gone into the build, so ask us about the fee before you ship anything back.

Which Mini Maxx Should You Buy?

The H&S Mini Maxx V1 for Ford Powerstroke 2003-2014 is priced from $974.00 to $1,034.00. The H&S Mini Maxx V1 for Ram 6.7L & 5.9L Cummins 2006-2012 is priced from $974.00 to $1,034.00. The H&S Mini Maxx V1 For GM/Chevy 6.6L Duramax 2011-2014 is priced at $1,034.00. Pick the version your engine and model year match.

The good news? Your truck already made this call for you. There's nothing to rank here, just a row to find.

More than one diesel in the shop? Each truck gets its own read of the table. Don't assume the tuner for one fits the other.

For Ford Powerstroke owners

If you run a 2003-2014 Ford with the 6.0L, 6.4L or 6.7L Powerstroke, the H&S Mini Maxx V1 for Ford Powerstroke 2003-2014 is your tuner. Running a Cab & Chassis? Re-read the Ford exception in the cab section before you commit.

For Ram Cummins owners

If you run a 2006-2012 Ram pickup with the 5.9L or 6.7L Cummins, not a Cab & Chassis, the H&S Mini Maxx V1 for Ram 6.7L & 5.9L Cummins 2006-2012 is your tuner. Got the 6.7L? That Shift on the Fly button is where the bang for your buck lives.

For LML Duramax owners

A 2011 through 2014 GM/Chevy running the 6.6L LML gets the H&S Mini Maxx V1 For GM/Chevy 6.6L Duramax 2011-2014. Keep the pickup-only line in mind, and plan your level changes for the pits.

Last check before you pick: model year, engine, cab style. Get those three right and the rest is the fun part.