Transmission Tune Only for EFI Live Hardware

Features:

• Custom TCM tuning for 2011 LML
• Designed for EFI Live hardware
• No additional license required
• Works with existing EFI Live device
• Improves shift quality and drivability
• Enhanced torque converter lockup strategy
• Increased line pressure for clutch holding
• Prevents short shifting under load
• Optimizes power band during towing
• Supports larger tires and turbo upgrades
• Ideal with custom ECM tuning
• Helps maximize overall transmission performance

Take Full Control Of Your Allison And Feel The Difference Instantly

If you have ever added power to your 2011 Silverado or Sierra 2500HD or 3500HD and felt like the transmission was not quite keeping up, this is where everything starts to come together. The Transmission Tune Only for EFI Live hardware is designed to wake up your Allison and make the truck feel tighter, stronger, and more responsive the moment you hit the throttle. Shifts become crisp and intentional instead of soft and lazy, and the torque converter locks up with purpose so more of your hard earned power actually reaches the ground. Whether you are running larger tires, a modified turbo, or custom ECM tuning, this calibration helps the truck feel composed instead of confused. You will notice smoother acceleration merging onto the highway and more confidence pulling through gears with a loaded trailer. It is not about flashy numbers on a dyno sheet, it is about making the truck drive the way it should have from the factory. Best of all, it works with your existing EFI Live hardware and does not require an additional license, which makes it a straightforward upgrade with real world impact.

Precision Calibrated Transmission Strategy For 2011 LML Applications

Under the surface, this TCM tuning package focuses on recalibrating shift timing, line pressure, and torque converter lockup strategy to complement your ECM tuning. By increasing line pressure in key areas, clutch holding capacity is improved, which is especially important for trucks with added torque from custom engine calibrations. The revised lockup strategy helps apply converter clutch engagement at the right moments, reducing slip and improving overall efficiency during towing and highway driving. Short shifting in performance situations is minimized, allowing the engine to stay within its preferred rev range and make consistent usable power. For trucks running 35 inch or larger tires, modified turbochargers, or built transmissions, these adjustments help restore proper shift scheduling and drivability. When towing through hills or long grades, quicker and more decisive shifts mean less time between gears and more time applying power to the pavement. Designed specifically for the 2011 6.6L Duramax LML platform, this transmission tune works seamlessly with EFI Live hardware to deliver a balanced and purpose built driving experience.

Fitment: 2011 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Designed for use with EFI Live hardware; compatible device required.
• No additional license required when using existing ECM tuning hardware.
• Intended to complement custom ECM tuning for best results.
• Recommended for trucks with larger tires, modified turbos, or built transmissions.
• Improves drivability but does not add engine horsepower on its own.
• Increases line pressure to improve clutch holding capacity.
• Recalibrates torque converter lockup strategy for better power delivery.
• Helps prevent short-shifting in performance applications.
• Optimized for towing and maintaining proper engine RPM under load.
• Best suited for 2011 6.6L Duramax LML with Allison transmission.
• Professional installation and proper supporting modifications recommended.