Optimized Stock Tune Only for EFI Live Spade

Features:

• Fits 2011 6.6L Duramax LML
• 49 state legal emissions compliant
• Emissions equipment remains fully intact
• Slight revisions to factory calibration
• No significant peak power increase
• Lower smoke output than stock
• Ideal for troubleshooting drivability issues
• Great for new or cautious drivers
• Supports custom tire size adjustments
• Maintains factory towing capability
• Requires EFI Live AutoCal V3
• Works with recommended transmission tuning

Keep Your 2011 LML Running Clean Predictable And Reliable

If you are happy with the way your 2011 Silverado or Sierra 2500HD or 3500HD LML performs but want it just a little more refined, this Optimized Stock Tune is a smart move. It keeps your emissions equipment fully intact and remains 49 state legal, so you can make improvements without creating compliance concerns. The calibration makes slight revisions to the factory file, helping reduce smoke output and smooth out overall drivability. Additionally, it is a great choice if you have added a mild upgrade such as an intake that benefits from proper tuning but does not require more power. Many owners use this file when letting someone else drive the truck, since it maintains a factory like feel. You can still tow with confidence, just without the added torque gains of dedicated tow tunes. It is a balanced solution for drivers who value reliability and clean operation over peak numbers.

Factory Based Calibration Strategy With Practical Adjustments

Designed specifically for the 2011 6.6L Duramax LML, this Optimized Stock Tune works with the EFI Live AutoCal V3 device for straightforward flashing and data logging. The calibration keeps peak power close to stock while refining fuel delivery, torque management, and throttle mapping for smoother performance. Furthermore, it can support custom tire size adjustments, which helps correct speedometer readings and address TPMS concerns after wheel changes. Because it avoids aggressive power increases, this file is often used to troubleshoot drivability issues or isolate mechanical problems. It also pairs well with transmission tuning to improve shift quality and overall driving feel. While you can tow using this tune, it does not include the added torque benefits of Light Tow or Heavy Tow calibrations. For owners who want subtle improvements backed by professional calibration strategy, this optimized stock file delivers a clean and controlled upgrade.

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

Notes:

• Fits 2011 6.6L Duramax LML only
• 49 state legal with emissions intact
• Emissions equipment must remain installed
• Requires EFI Live AutoCal V3 device
• Additional EFILive license may be required
• No significant peak power increase
• Does not include Light or Heavy Tow gains
• Ideal for stock or lightly modified trucks
• Transmission tuning recommended for best drivability
• California Prop 65 warning applies