Heavy Tow Tune incl EFI Live Spade

Features:

• Gain up to 40 RWHP and 72 ft-lbs
• 50 state legal with EO# D-845
• Emissions intact, no deletes required
• Includes EFI Live AutoCal V3 hardware
• Safe and effective for heavy towing use
• SMART EGT control manages exhaust temperatures
• Built-in air-fuel ratio limits reduce soot
• Designed to tow up to 8,000 pounds
• Improved low-speed trailer maneuvering
• Factory turbo brake stays fully functional
• Revised throttle response for better control
• Over 100 custom calibration changes included

Built For Long Miles And Heavy Loads

If your 2016 Duramax spends its life hooked to a trailer, this Heavy Tow Tune is designed to make every mile easier and more controlled. It adds just the right amount of power to get heavy loads moving without pushing exhaust temperatures or stressing the engine. You will notice stronger pull on hills, smoother throttle response, and less need to constantly downshift when the road gets steep. Backing a trailer into tight spots feels more predictable thanks to revised pedal sensitivity and improved low speed control. The factory turbo brake stays fully functional, which is a big deal when you are coming down long grades with weight behind you. Everything stays emissions intact and fully 50 state legal, so you can tow with confidence anywhere your work takes you. This tune is ideal for drivers who tow often and want dependable performance day after day.

Calibrated To Tow Heavy While Managing Heat And Power

This Heavy Tow Tune is custom built for the 2016 Silverado and Sierra 2500HD and 3500HD equipped with the 6.6L Duramax LML. It includes more than 100 calibration changes that focus on torque delivery, throttle mapping, and load control while towing up to 8,000 pounds GVW. SMART EGT control actively manages exhaust temperatures under sustained load, while built in air fuel ratio limits help reduce soot production. The tune delivers gains of up to 40 rear wheel horsepower and 72 ft-lbs of torque, improving acceleration without creating excessive heat. Installation is handled through the included EFI Live Spade AutoCal V3, which plugs directly into the OBD-II port with no wiring modifications. Diagnostic logging and tune updates are supported through the same device for long term usability. This calibration is designed to keep the engine operating in a safe, efficient range during extended towing and demanding driving conditions.

Fitment: 2016 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Includes custom Heavy Tow Tune specifically for 2016 LML Duramax.
• Fully emissions intact and 50 state legal (CARB E.O. D-845).
• Designed for towing up to 8,000 lbs GVW safely and efficiently.
• Not intended for high-performance or racing applications.
• Best suited for drivers towing frequently or over long distances.
• Improper use may result in excessive temperatures or mechanical stress.
• Factory turbo brake retains full functionality with this tune.
• Uses EFILive AutoCal V3 hardware, included in this package.
• Additional licenses required to flash other vehicles with same device.
• DuramaxTuner.com support team is available for real-time troubleshooting.
• Switch on the Fly available if you want all five custom tunes.
• Recommended TCM tuning for best performance and smoother shifting.