Sport Tune Only for EFI Live Spade - LML (2012)

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. 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.