50 State Legal FIVE Tune Pack incl EZ Lynk Auto Agent 2.0

Features:

• Includes FIVE custom tuning profiles
• EZ Lynk AutoAgent 2.0 hardware included
• 50 State Legal with emissions intact
• Up to 135 RWHP and 243 ft-lbs gains
• Sport, Street, Tow, and Stock tune options
• No splicing or wire hacking required
• Custom SMART EGT control for safe towing
• Fully customized with 100+ calibration changes
• Throttle response and shifting greatly improved
• Mobile app compatible for tune control
• Retains factory turbo braking functionality
• World class phone-based customer support

Five Tunes One Truck Endless Possibilities

If you want your 2012 Duramax to adapt to whatever the day throws at it, this 50 State Legal FIVE Tune Pack gives you that flexibility without cutting corners. From calm daily driving to confident towing and all-out performance, you can choose the power level that fits the moment. The Street Tune wakes the truck up and makes it feel lighter, while the Light Tow and Heavy Tow tunes give you smooth, controlled power when a trailer is hooked up. When you want to feel everything your Duramax is capable of, the Sport Tune delivers serious acceleration that transforms how the truck drives. On the other end of the spectrum, the Optimized Stock tune is perfect for loaning the truck out or diagnosing issues without added power. Everything is emissions intact and designed to keep reliability front and center. With EZ Lynk AutoAgent 2.0 included, managing your tunes is as easy as using your phone, making this a powerful upgrade that still feels simple and approachable.

Custom Calibrations Built For Power Safety And Control

This FIVE Tune Pack is engineered specifically for the 2012 GM Silverado and Sierra HD with the 6.6L Duramax LML, using more than 100 calibration changes per tune to improve drivability and performance. The Sport Tune offers gains up to 135 RWHP and 243 ft-lbs of torque, while the Street Tune balances strong power with OEM-level reliability. Light Tow and Heavy Tow tunes incorporate SMART EGT control and air-fuel ratio limits to manage exhaust temperatures and reduce soot during towing. Each towing tune retains factory turbo braking and refines pedal sensitivity for smoother low-speed trailer control. The Optimized Stock tune makes subtle factory adjustments with no meaningful power increase, which is ideal for troubleshooting or conservative driving. EZ Lynk AutoAgent 2.0 allows wireless flashing, live data monitoring, and diagnostic control directly from your smartphone. With optional transmission tuning support, this package ensures your engine and transmission work together efficiently across every driving situation.

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

Notes:

• Includes five tunes: Stock, Street, Sport, Light Tow, Heavy Tow.
• Emissions intact, no parts need removal.
• 50 State Legal under E.O. No. D-845.
• Comes with EZ Lynk AutoAgent 2.0.
• Fits 2012 Silverado/Sierra 2500HD/3500HD 6.6L Duramax.
• SMART EGT Control manages exhaust temps.
• Air-fuel ratios tuned to reduce soot.
• No wiring or sensor hacks needed.
• Stock tune is ideal for diagnostics.
• Sport tune not safe for towing.
• EZ Lynk uses smartphone and WiFi.
• TCM tuning recommended for mods or towing.