50 State Legal FIVE Tune Pack Only for EFI Live Spade

Features:

• Five custom tunes for versatile performance
• 50-state legal, emissions equipment stays intact
• Up to +135 RWHP and +243 ft-lbs torque
• SPADE tuner required, sold separately
• Smooth, responsive throttle feel
• Factory turbo-braking fully retained
• Custom SMART EGT control for safe towing
• Improves towing power without raising EGTs
• Better fuel control, less soot than box tuners
• Designed for daily driving and heavy towing
• Optimized shifting with recommended TCM tuning
• World-class phone support from DuramaxTuner.com

Unlock The True Power Hidden In Your Duramax

If you're ready to wake up your 2014 Silverado or Sierra HD, this Five Tune Pack from DuramaxTuner.com is the upgrade you’ve been waiting for. Built for the EFI Live SPADE tuner, this custom tune package gives you real control over how your 6.6L LML Duramax performs, whether you're towing, daily driving, or chasing more horsepower on the weekends. You’ll get five professionally developed tunes that range from optimized stock all the way to a sport tune capable of adding up to +135 rear-wheel horsepower and +243 ft-lbs of torque. Throttle response sharpens up, dead pedal feel disappears, and acceleration feels lighter and more confident across the board. What’s more, all tunes retain your emissions equipment and are 50-state legal, so you won’t run into compliance issues. Whether you're hauling a trailer or just want more fun behind the wheel, this setup keeps your factory reliability while giving you noticeably better driveability. It’s the kind of upgrade that makes you fall in love with your truck all over again.

Five Tune Options Built For Real World Driving

Each of the five tunes in this pack is designed for a specific purpose, giving you the flexibility to match your truck’s performance to your needs. The Street Tune is perfect for daily driving, delivering +110 RWHP and +198 ft-lbs of torque with a smooth, responsive feel that makes your truck more enjoyable around town or on the highway. For heavy towing, the Heavy Tow tune safely boosts power without increasing EGTs, thanks to integrated SMART EGT Control and calibrated air-fuel ratios that help prevent excessive soot buildup. If you're towing under 8,000 lbs, the Light Tow tune strikes a great balance between extra power and reliable low-speed trailer maneuvering. The Optimized Stock tune keeps things close to factory, making it useful for diagnostics or when someone else is behind the wheel. Every calibration is crafted with over 100+ changes from stock, maintaining full factory turbo braking functionality and ensuring long-term durability. And with SPADE hardware, tuning is as simple as flashing your truck through the OBD port with handheld ease.

Fitment: 2014 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• This product includes tunes only, no hardware
• EFI Live SPADE (AutoCal V3) device is required
• EFiLive license is included in the price
• Compatible with 2014 GM 2500HD and 3500HD 6.6L LML Duramax
• Tunes are emissions intact and do not delete emissions equipment
• This Five Tune Pack is 50-state legal (CARB E.O. No. D-845)
• SPADE device can flash multiple trucks, but each requires its own tune and license
• Recommended to pair with TCM tuning for best results
• Custom tuning is not transferable between trucks
• World-class customer support available through DuramaxTuner.com
• Performance gains will vary depending on vehicle condition and supporting mods
• This product may expose users to chemicals listed under California Proposition 65