Sport Tune Only for EFI Live Spade

Features:

• Gain up to 100 HP and 180 ft-lbs torque
• 49 state legal with emissions equipment intact
• Delivers fast acceleration and firm shifting
• No dead pedal feeling under throttle
• Great for weekend fun or showing off
• Fully customized with 100+ calibration changes
• Safe for occasional towing with proper gauges
• Ideal for future performance builds
• Does not require splicing or wire hacking
• World class customer support included
• SPADE Autocal V3 tuning device required
• Recommended TCM tuning for optimal performance

Unleash The Strongest Legal Power Your Truck Can Have

If your 2012 Duramax feels like it is begging for more power, the Sport Tune for EFI Live Spade delivers exactly that in a controlled and intentional way. This tune is built for drivers who want the most performance possible while still keeping emissions equipment intact and staying 49 state legal. With gains of up to 100 horsepower and 180 ft-lbs of torque, the truck pulls harder through every gear and responds instantly when you touch the throttle. The dead pedal feeling disappears, replaced by sharp response that makes the truck feel lighter and far more aggressive. Acceleration is strong and confident, giving you that adrenaline rush that stock tuning simply cannot provide. This tune is ideal for weekend driving, spirited highway pulls, or owners planning future performance upgrades. If you miss the excitement of a powerful diesel without the constant headaches of older modified setups, this tune brings that feeling back.

Performance Focused Calibration Built For Controlled Output

The Sport Tune for the 2012 Silverado and Sierra 2500HD and 3500HD with the 6.6L Duramax LML is a custom ECM calibration featuring more than 100 detailed tuning changes from stock. Fuel delivery, torque management, and throttle mapping are optimized to produce approximately 400 total horsepower and 680 ft-lbs of torque while maintaining emissions compliance. Firm shift strategies are applied to handle the increased power, though transmission tuning is strongly recommended for best drivability and longevity. The tune is flashed using the EFI Live Spade AutoCal V3 through the OBD-II port, with no wiring modifications or sensor tampering required. While occasional towing is possible, proper gauges including EGT monitoring are necessary due to the increased output. This tune is best suited for performance use and experienced drivers who understand the demands of higher power levels. When paired with supporting modifications, it offers strong, repeatable performance without sacrificing clean installation or tuning precision.

Fitment: 2012 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• 49-state legal but not for California use.
• Emissions equipment must stay installed.
• Built for max street-legal performance.
• Not ideal as a daily-use tune alone.
• Gauges required if towing with this tune.
• Best used on private property or events.
• Too much power for inexperienced drivers.
• Needs supporting mods like a lift pump.
• Best used with Switch on the Fly setup.
• Requires EFI Live AutoCal V3 hardware.
• No wiring mods needed for install.
• Not recommended for warranty-sensitive owners.