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6.6L Duramax L5P OBD2 Flash Delete Tune Files - SOTF and Single Calibration | 2017-2026 GMC/Chevrolet
Switch On The Fly (2017-2023)
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GM Duramax L5P (2017-2026)
6.6L Duramax L5P OBD2 Flash Delete Tune Files - SOTF and Single Calibration | 2017-2026 GMC/Chevrolet
6.6L Duramax L5P OBD2 Flash Delete Tune Files - SOTF and Single Calibration | 2017-2026 GMC/Chevrolet
SKU: SKU:DT-HP-TUNE-G17-SOTF
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$1,299.00
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Sale price
$1,299.00
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L5P Duramax Tune files for 2017–2026 GM Silverado & Sierra 2500/3500
Two ways to add power to your L5P Duramax, depending on the year you drive. Both are built to add clean, usable power while keeping your truck easy to live with day to day.
On 2017–2023 trucks, the Black Bandit Switch-on-the-Fly (SOTF) tune file lets you move between five power levels right from the driver's seat. Turn it up for towing or a pass, dial it back for everyday driving. On 2024–2026 trucks, the Single Calibration tune gives you one dialed-in performance map with a steady, predictable power gain.
Which Tune Fits Your Truck
2017–2023 · SOTF
Five selectable levels you can change on the fly. Great if you want flexibility between towing, daily driving, and everything in between.
2024–2026 · Single Calibration
One performance map, consistent gains. A simple, straightforward boost for the newest trucks.
Selectable Power Levels (2017–2023 SOTF)
| Level | Power Gain |
|---|---|
| 1 | Stock |
| 2 | +50 HP |
| 3 | +75 HP |
| 4 | +100 HP |
| 5 | +150 HP |
Cab & Chassis owners: 2017–2023 4500/5500 C&C trucks are limited to a 60 HP tune. Reach out before ordering so we can point you to the right file.
Watch your EGTs: We recommend monitoring exhaust gas temps when running Levels 4 and 5.
What You'll Need
To get set up, make sure you have:
- A GM Duramax L5P OBD2 Flash Delete tuning interface
- An unlocked ECM
- Tuning credits — 6 credits for 2017–2023, 8 credits for 2024–2026
What's Included
Your order comes with a five-level Black Bandit tune file (2017–2023) or a single-calibration tune (2024–2026). These files are built for stock trucks with emissions equipment removed for off-road use.
Running upgraded hardware? These tunes don't cover aftermarket turbochargers, larger injectors, or major fueling changes. Message us first if your truck has any of these so we can sort out the right setup.
Get More From Your L5P
Pair your tune with the parts that make it work best:
- L5P GM Duramax All-In-One DPF/DEF/EGR Delete Kit (2017–2026)
- Unlocked E41 ECM for GM Duramax L5P — keep your original unit stock
- Extra tuning credits
- L5P install guides & tuning resources
Good to Know Before You Order
- Each tune is built for your specific vehicle and is non-refundable under all circumstances.
- Always include your OBD2 Flash Delete Interface serial number when ordering credits.
FAQ
What's the difference between the SOTF and Single Calibration tunes?
The Black Bandit Switch-on-the-Fly tune (2017–2023) gives you five power levels you can change while driving. The Single Calibration tune (2024–2026) is one fixed performance map. It comes down to the year of your truck.
How many tuning credits do I need?
You'll need 6 credits for a 2017–2023 truck and 8 credits for a 2024–2026 truck.
Will these tunes work with my aftermarket turbo or injectors?
No. These files are built for stock trucks with emissions equipment removed for off-road use. If you've added a bigger turbo, larger injectors, or made major fueling changes, contact us before ordering so we can help.
Can I keep my truck's original ECM stock?
Yes. Grab a spare unlocked E41 ECM and you can leave your original unit untouched.
Important — these aren't just tunes: These are Black Bandit Switch-on-the-Fly (SOTF) tunes — digital calibration files that let you change your engine's performance on the go, right from the driver's seat. Treat them like the real engine calibrations they are: run the level that fits what you're doing, keep an eye on your EGTs at higher levels, and never flash a file that isn't built for your exact truck.
Note: Please review our Terms & Conditions and Shipping Policy before ordering.
For off-road use only. The photo is for reference — your actual tuner may look different in appearance and branding.
2017-2026 GM Duramax L5P 6.6L Silverado 2500HD / 3500HD2017-2026 GM Duramax L5P 6.6L Sierra 2500HD / 3500HD
Shipping Policy at Tuner Depot
At Tuner Depot, we understand the importance of timely delivery for your performance parts. We're committed to ensuring a seamless shipping experience, striving to dispatch your orders with utmost efficiency and speed.
Our Shipping Policy: Our aim is to dispatch all orders within two business days, providing you with a quick and efficient processing time. However, unforeseen circumstances beyond our control may occasionally impact shipping times.
Factors Affecting Shipping:
- Weather Conditions: Adverse weather conditions such as rain, snow, or sleet may affect delivery timelines. We will make every effort to minimize any delays.
- Holiday Periods: Please note that our shipping center will be closed during holidays. We will resume shipping promptly on the next business day. Allow for potential delays during peak seasons, but rest assured, we will keep you informed every step of the way.
- Staff Availability: Unforeseen circumstances can occasionally affect our staffing levels, possibly leading to minor delays. We are committed to swiftly resolving any issues to maintain our high standards of service.
We genuinely appreciate your understanding and patience during any unexpected obstacles. Be assured that we will utilize every resource available to deliver your performance parts promptly.
Warranty
Hardware components are covered by Tuner Depot's standard warranty. Tuning devices and software carry manufacturer warranty terms. Use of these products will void your vehicle's factory warranty. Please confirm with your manufacturer before installation.
Off-Road Use Only
These products are intended for off-road, race, and competition use only and may not be legal for use on public highways where emissions laws apply. Check your local and state regulations before purchase.
Customer Reviews
Overall rating: 4.9 / 5 from 25 reviews.
Tube does run a little lean
Tuner Depot customer service is amazing. They were always super fast in responding to emails. They turned the tune around in just a day or two. The tune is really nice. No smoke. Really seems to be a clean powerful tune!
No problems with the program also it transmission Shift a lot smoother now with the tune update. Worth the investment !!
Tons of power and 22 mpg average on my Montana trip. Love it!
it is better than I thought it would be, it would be better if the shift on the fly came as part of the package. but i will order it when I figure out what I need to order.
Glow plug light does let you know when the glow plugs are on or if they are working . Otherwise so far the tuner works fine .
Easy to install your staff was very helpful
Awsome
Loaded on the ecm super easy and made my truck super sporty! Wish I would have done this sooner!
Great customer support. Very responsive.
Straight forward install. Truck performs and sounds great!
Easy install, works great!
Truck is awesome!
WAS A LITTLE CHALLENGINE BUT WITH THE HELP OF THE GUYS AT TUNER DEPOT, THEY SPED THINGS ALONG QUITE A BIT. DEFINATELY BUYING MORE AND LOOK FORWARD TO PURCHASING MORE OF THE L5P TUNES.
I am amazed by how much this tune package improved my truck's performance. Excellent value for the cost.
Incredible performance boost for my 2019 Silverado. The installation was smooth and easy. Happy with this purchase.
This is a fantastic tune package for anyone looking to upgrade their L5P Duramax. The performance levels are great and it's a good value for money.
I got this for my husband's 2019 Sierra and he loves it. He says the power gain is noticeable and the truck runs smoother. Would definitely recommend.
Brilliant product. The tune package improved my 2017 Silverado's performance significantly. The difference is remarkable and the installation was quite straightforward.
This is an excellent tune package. The variety of power levels really allows me to customize my truck's performance. I had some questions, and their customer service was top-notch.
Quality product. The power gains are truly noticeable. It was straightforward to install, and the customer service was excellent. I recommend this product.
I purchased this for my 2018 Sierra and I'm thrilled with the performance gains. This package is a game-changer. Highly recommend it.
This is one of the best tuning options for L5P Duramax. Great power levels and easy to install. The customer support team was very helpful in answering my questions. Recommended!
I got this for my father's truck, and he is thrilled with the performance improvement. Well worth the investment.
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