Sport Tune Only for EFI Live Spade

Features:

• Gain up to +135 HP and +243 torque
• 532 HP and 1008 ft-lbs total output
• Emissions intact and 49-state legal
• Fastest possible acceleration for your Duramax
• No dead pedal or throttle delay
• Custom tuning with 100+ ECM calibration changes
• Firm shift feel for high performance driving
• Requires EFI Live AutoCal V3 hardware
• Supports data logging and diagnostic scanning
• No wiring mods or sensor hacking needed
• Built for trucks with supporting performance mods
• Best used in controlled or competition settings

When You Want Every Last Bit Of Legal Power

This Sport Tune is built for the Duramax owner who refuses to settle for almost fast enough. The moment you lean into the throttle, the truck responds with a hard pull that feels aggressive yet controlled, delivering the strongest acceleration you can legally run. Power comes on instantly with no dead pedal, making the truck feel sharp and alive in every gear. It is the kind of tune that reminds you why you bought a diesel in the first place, especially if you have owned a high horsepower truck in the past. While this setup can handle light towing, it is clearly aimed at drivers who prioritize performance and excitement. Every drive feels more engaging, from quick highway passes to rolling starts that plant you firmly in the seat. If you want a tune that delivers maximum thrill without the chaos of older modified setups, this one hits the mark.

Aggressive Calibration Built For Serious Performance Builds

This Sport Tune for the 2011 6.6L Duramax LML features more than 100 custom ECM calibration changes designed to extract the highest possible power within emissions-compliant limits. With gains up to +135 horsepower and +243 ft-lbs of torque, total output climbs to an impressive 532 horsepower and 1008 ft-lbs of torque. Throttle mapping, fueling, and torque management are carefully refined to deliver strong power while reducing soot compared to typical box programmers. The tune requires EFI Live AutoCal V3 hardware, allowing simple OBD flashing along with data logging and diagnostics. Because of the increased output, supporting modifications such as transmission tuning, improved fuel supply, and better airflow are strongly recommended. Firm shift behavior and improved power delivery are best achieved when paired with TCM tuning, especially under heavy throttle. For experienced drivers building a performance-focused Duramax, this calibration provides a strong foundation for future upgrades.

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

Notes:

• This is a single Sport Tune, not Switch on the Fly
• 49-state legal with emissions equipment required
• Not recommended for daily towing or frequent hauling
• Gauges must be monitored when towing or pushing limits
• Requires supporting mods for safe long-term use
• Recommended upgrades include lift pump, fuel system, intake, and TCM tuning
• Too much power for inexperienced or casual drivers
• Best used during sanctioned events or on private property
• SPADE / EFI Live AutoCal V3 device is required
• EFILive license included when hardware is purchased from us
• Existing devices need a new license and auth code submission
• Custom tunes are non-refundable once delivered