Sport Tune Only for EFI Live Spade

Features:

• Fits 2012 6.6L Duramax LML
• 49 state legal emissions compliant
• Emissions equipment remains fully intact
• Sport tune adds plus 135 HP
• Plus 243 lb ft torque
• Fastest possible acceleration calibration
• Firm shifting and strong throttle response
• No dead pedal feel
• Over 100 calibration changes
• Retains factory sensor integration
• Requires EFI Live AutoCal V3
• Supports future performance modifications

Turn Your 2012 LML Into A Street Dominating Machine

If you have ever felt like your 2012 Silverado or Sierra 2500HD or 3500HD LML was holding back, this Sport Tune is where things get serious. Right out of the gate, you are looking at gains of plus 135 horsepower and 243 lb ft of torque, transforming how the truck accelerates and responds. The throttle feels alive with no dead pedal sensation, and the firmer shifting helps the truck pull hard through every gear. Additionally, this calibration delivers the strongest performance available while remaining 49 state legal and keeping your emissions equipment fully intact. It is the kind of tune that makes highway merges effortless and puts a grin on your face every time you roll into the throttle. While you can still tow with it, this setup is built for drivers who want maximum excitement and plan to support the truck with the right upgrades. If you are building toward more power in the future, this Sport Tune gives you a foundation that is aggressive yet professionally engineered.

Advanced Emissions Compliant Calibration For Peak Performance

This Sport Tune is designed specifically for the 2012 6.6L Duramax LML and requires the EFI Live AutoCal V3 device for flashing. The calibration incorporates more than 100 changes from stock, refining fuel delivery, torque management, and throttle mapping to safely increase output. Rated at a total of 532 horsepower and 1008 lb ft of torque, it represents one of the highest legal performance levels available for this platform. Furthermore, the tune maintains full integration with factory sensors and emissions components, avoiding the need for wiring modifications or hardware removal. The improved shift strategy enhances drivability and helps put power to the ground more efficiently. Transmission tuning is strongly recommended, especially for trucks running larger tires or additional engine modifications. When paired with proper supporting upgrades such as a lift pump and fuel system improvements, this Sport Tune delivers strong, controlled performance while staying emissions compliant.

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

Notes:

• Fits 2012 6.6L Duramax LML only
• 49 state legal with emissions intact
• Emissions equipment must remain installed
• EFI Live AutoCal V3 required
• Additional EFILive license may be required
• Not ideal for heavy towing use
• Monitor EGT gauges when towing
• Supporting fuel upgrades strongly recommended
• TCM tuning highly recommended
• California Prop 65 warning applies