EFI Live AutoCal Tune Package for GM Duramax (2001-2016)
Type: custom-tuning | Fits: GM Duramax
Expand your EFI Live AutoCal with this Tune Package, engineered for GM Duramax trucks. Perfect for adding another vehicle to your existing AutoCal, this package provides custom tune files and optional SOTF (Shift-On-The-Fly) switch for real-time control. Whether you need towing efficiency, daily drivability, or maximum horsepower, this solution is tailored for your truck.
Vehicle Fitment
✅ Chevrolet Silverado 2500/3500 (2001–2016, 6.6L Duramax)
✅ GMC Sierra Denali 2500/3500 (2001–2016, 6.6L Duramax)
✅ GM Duramax 3500, 4500, 5500 Cab & Chassis (2007.5–2016, LMM & LML only)
❌ Not compatible with PTO-equipped units (PTO disabled when tuned)
Specifications
| Feature | Details |
|---|---|
| Supported Engines | LB7 (2001–2004), LLY (2004.5–2005), LBZ/LMM (2006–2010), LML (2011–2016) |
| Tune Power Levels | Stock, +65 HP (Eco/Tow), +100 HP (Street), +130 HP (Max Power) |
| SOTF Compatibility | Yes – requires optional switch |
| Custom Tuning | Required |
| Installation | Flash tune via EFI Live AutoCal |
What’s Included
- Custom EFI Live tune files
- Optional SOTF switch for on-the-fly tuning adjustments
Key Features
- Multiple tune levels for power, towing, or performance
- Optional SOTF switch for real-time tune changes
- Expands your existing AutoCal device for new vehicles
- Designed for smooth integration and easy flashing
Benefits
- Enhanced horsepower & torque across driving modes
- Better fuel efficiency when tuned for Eco/Tow
- Flexibility to switch between tunes without reflashing
- Reliable tuning tailored to your truck’s year and engine generation
Seamless Setup
- Request a VIN slot increase (include your AutoCal serial number).
- Purchase an additional VIN license from EFI Live.
- Order this package for your Duramax tune.
- Load the custom tune files to your AutoCal.
- Flash your vehicle and enjoy improved performance.
Important Notes:
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Your satisfaction is important to us. If you wish to return an item or request a refund, please review the terms and conditions outlined in our Returns Policy.
Important Notices
- Off‑Road Use Only
Products sold by JS Speed are intended for off‑road use and may be illegal on public roads where emissions or pollution‑control laws apply. - Check Local Laws
Before purchasing or installing, verify all applicable local, state/provincial, and federal regulations to ensure the modification is legal in your area. - Professional Installation Recommended
These parts should be installed by qualified professional mechanics. Improper installation can cause performance issues or vehicle damage. Unless a product page explicitly states otherwise, installation instructions are not included. Components are designed for users with solid mechanical knowledge, and minor adjustments or modifications may be required for proper fitment. Returns or refunds cannot be accepted due to difficulty completing an installation or the absence of instructions. - Warranty Impact
Use of these parts may void your vehicle’s factory warranty. Confirm with your vehicle manufacturer before purchase and installation. - Limitation of Liability
JS Speed is not responsible for damage, failures, or issues arising from the use or installation of these products. - Product Images
Images are for illustration only and may differ from the actual product due to manufacturer updates or improvements. - No Performance Guarantees
While these products are designed to enhance performance, JS Speed does not guarantee specific performance results.
