49 State Legal FIVE Tune Pack Only for EFI Live Spade

Features:

• Includes five custom EFI Live tunes
• Gain up to +135 HP and +243 ft-lbs
• Full emissions intact, 49-state legal
• Smooth power curve for daily driveability
• Smart EGT control for safe towing
• Optimized for stock to heavy tow setups
• No dead pedal, instant throttle response
• Improves performance across all driving conditions
• Retains factory turbo-braking functionality
• Custom tuning with 100+ calibration changes
• Works with EFI Live Spade (AutoCal v3)
• TCM tuning recommended for best performance

Five Tunes That Let Your Duramax Do It All

If you want your 2012 Silverado or Sierra HD to perform at its best in every situation, this 49-State Legal Five Tune Pack is the ultimate upgrade. Whether you're towing heavy, daily driving, or just want to feel that raw Duramax power on the open road, this setup gives you the flexibility to pick the right power level for the job. Each of the five custom tunes is built with emissions intact, so there's no need to remove or tamper with factory systems. You'll get improved throttle response, stronger torque, and smoother shifts without sacrificing reliability or driveability. The Sport Tune alone delivers up to 135 extra rear-wheel horsepower and 243 ft-lbs of torque, giving your truck a whole new personality when you want it to come alive. When it's time to haul, the Light Tow and Heavy Tow tunes keep your EGTs under control and power in the right places. From weekday work to weekend fun, this package transforms how your truck drives without turning it into something it was never meant to be.

Built For Performance Without Compromising Control

This five tune pack is more than just added power, it’s a well-balanced set of calibrations designed to enhance engine output while maintaining emissions compliance and long-term reliability. Each tune includes over 100 adjustments from stock, giving you optimized fuel delivery, throttle mapping, and turbo management tailored specifically for the 6.6L LML Duramax. Whether you're using the Sport Tune for peak output or the Heavy Tow Tune for safe hauling up to your truck’s GVW, each file is built with air-fuel ratio limits and custom EGT management to keep soot and heat in check. The included Optimized Stock tune is also a valuable option when diagnosing mechanical issues or when handing the keys to someone unfamiliar with tuned power levels. All tunes retain factory turbo-braking functionality, and revised pedal sensitivity makes low-speed trailer maneuvering much easier. Designed for use with EFI Live’s SPADE AutoCal v3 hardware, the system allows for unlimited updates and diagnostics using a single handheld device. For trucks with larger tires, upgraded turbos, or built transmissions, pairing this tuning with TCM calibration ensures everything works together smoothly under all conditions.

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

Notes:

• Requires EFI Live Spade (AutoCal v3) hardware
• EFILive license is included with this package
• If using existing hardware, license and serial/auth code are required
• 49-state legal, not CARB approved for California
• Tunes are emissions intact and do not delete emissions equipment
• Sport Tune may be too aggressive for towing without proper gauges
• Heavy Tow tune supports towing up to GVW safely
• Light Tow tune is ideal for loads under 8,000 lbs
• Optimized Stock tune is helpful for troubleshooting or lending the truck
• Transmission tuning is strongly recommended for best results
• Custom TCM tuning improves shifting and power delivery
• Not intended for inexperienced drivers or improper towing setups