50 State Legal FIVE Tune Pack Only for EZ Lynk Auto Agent 2.0

Features:

• Includes five custom tunes in one pack
• 50 state legal with emissions intact
• +135 RWHP and +243 ft-lbs on Sport
• Tunes for street, tow, or daily driving
• Custom SMART EGT control included
• More power with less soot output
• Retains full factory turbo braking
• Improves pedal feel and responsiveness
• Built-in air fuel ratio protection
• Safe for towing up to GVW with Heavy Tow
• Fully custom tuning with 100+ changes
• EZ Lynk AutoAgent 2.0 required

Get The Power And Control You Have Been Missing

If you want to transform the way your 2015 Duramax drives, the FIVE Tune Pack from DuramaxTuner.com is exactly what you need. Whether you're towing your camper, hauling gear to the jobsite, or just want a more responsive truck for your daily drive, this pack gives you the flexibility to choose the power level that fits the task. From the adrenaline-packed Sport Tune to the smart and smooth Heavy Tow option, each tune is designed with real-world use in mind. You’ll notice better throttle response, quicker acceleration, and smoother shifting no matter which level you select. The Light Tow and Street Tunes deliver solid performance with safe, emissions-friendly gains you can count on. Even the Optimized Stock option comes in handy when someone else is driving your truck or you're troubleshooting an issue. With emissions intact and full 50-state legality, this tune pack lets you enjoy the performance you want without the worry.

Tuning That Balances Performance Safety And Versatility

This FIVE Tune Pack is a full-featured tuning solution built to give you control and confidence in every driving scenario. Each of the five tunes is built on over 100+ calibration changes from stock, designed to work with your factory emissions systems and deliver efficient power without added soot. The Street and Sport Tunes give you up to +135 RWHP and +243 ft-lbs of torque, offering firm shifts and no dead pedal response. The Light and Heavy Tow Tunes feature built-in SMART EGT control and air-fuel ratio safeguards that help manage heat and maintain durability under load. Factory turbo brake functionality remains intact across all tunes, so you're never compromising on control or safety. Everything is delivered through the EZ Lynk AutoAgent 2.0 platform, offering fast flashing, diagnostics, and real-time data logging. Whether you’re chasing performance or pulling a trailer, this pack is calibrated to match your driving needs.

Fitment: 2015 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LML

Notes:

• Includes five custom tunes designed for real-world use.
• Tunes include Sport, Street, Light Tow, Heavy Tow, and Optimized Stock.
• All tunes are emissions intact and 50-state legal (E.O. No. D-845).
• EZ Lynk AutoAgent 2.0 is required to use these tunes.
• If you do not own the EZ Lynk, it must be purchased separately.
• Tunes provide up to +135 RWHP and +243 ft-lbs torque.
• Heavy and Light Tow tunes are designed for safe towing performance.
• SMART EGT Control and AFR limits help maintain safe operating temps.
• Sport Tune is not recommended for towing without proper gauges.
• Optimized Stock is ideal for troubleshooting or lending your truck out.
• Custom tuning involves over 100 calibration changes from factory settings.
• EZ Lynk system allows data monitoring, code clearing, and fast tune uploads.