6.6L Duramax L5P SOTF Tuning Package | 2017-2026 GMC/Chevrolet
Overview
L5P Duramax Tunes 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 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.
Identifiers
- Brand
- Tuner Depot Tunes
- Manufacturer
- Tuner Depot Tunes
- MPN
- L5P-SOTF
- SKU
- L5P-SOTF
- GTIN
- Not on file — feed sends identifier_exists = false
- OEM number
- Not on file — flagged for data entry
Specifications
Only attributes present in the product record are listed.