LM2 Diesel Tuning Starts Here!
Black Bandit now offers custom tuning and diagnostics for the newest generation of L5P Duramax trucks — powered by HP Tuners’ exclusive support for the E42 ECM.
Black Bandit’s custom Power Tunes for 2020–2022 Duramax squeeze out every ounce of horsepower and torque while improving throttle response and fuel efficiency. Built exclusively for the 3.0L LM2, these tunes break factory limits for a harder pull, smoother drive, and that aggressive edge your diesel deserves.
More Power. Sharper Response. Zero Compromise.
Your diesel has more to give — and Black Bandit Power Tunes are built to unlock every ounce of it. Developed by hardcore diesel enthusiasts, our custom tuning squeezes out raw horsepower, cranks up torque, and delivers throttle response so sharp it feels like your truck’s reading your mind.
These aren’t cookie-cutter tunes. Every Power Tune is built for your exact engine, driving style, and performance goals — whether you want to tow heavier, run quicker, or just smoke the guy next to you at the light.
What You Get with Power Tunes:
More horsepower & torque for serious pulling power
Crisper throttle response for a more responsive drive
Optimized fuel mapping for better efficiency
Custom-built for your truck—not generic, one-size-fits-all tunes
Aggressive edge that makes your 3.0L sound and feel alive
These aren’t off-the-shelf tunes. They’re built by diesel enthusiasts for diesel enthusiasts—crafted to give your 2020-2022 Chevrolet Silverado / GMC Sierra 1500 3.0L Duramax the performance it deserves.
Stop leaving power on the table. Upgrade to Black Bandit Power Tunes and feel the difference every time you hit the throttle.
How It Works
To enable custom tuning, you’ll need to complete a one-time ECM unlock. This requires sending your truck’s original E46 ECM to HP Tuners for the upgrade. Spare or replacement ECMs will not be accepted — no exceptions.
Send in your factory E46 ECM
Processing takes 3–5 business days (plus shipping time)
Once returned, you’re ready to tune with HP Tuners’ VCM Suite
Whether you're after power, fuel efficiency, or better towing performance — this is the first step toward unlocking the full potential of your 2020-2022 Duramax.
Duramax LM2 3.0L - Power Tunes (2020-2022)
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2020–2022 Chevrolet Silverado 1500 3.0L LM2 Duramax
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2020–2022 GMC Sierra 1500 3.0L LM2 Duramax
NOTE:
If you drive a 2017–2023 L5P E42 model, you’ll need the GM E41 ECM Unlock Kit, not this one.
If you drive a 2022 LM2 E46 model, please note that this unlock service is only for the E46 Bosch ECM found in early 2022 models — not the E66 ECM found in later models of the 2022s.
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