2017–2023 Chevy GMC Duramax L5P 6.6L EZ Lynk Delete Kits | Stage 1, 2 & 3 DPF, DEF & EGR

2017–2023 Chevy / GMC Duramax L5P 6.6L | Stage 1, Stage 2 & Stage 3 Delete Kits

Our Stage 1, Stage 2, and Stage 3 Delete Kits for the 2017–2023 Duramax L5P 6.6L are designed to deliver reliable emissions removal, proven EZ Lynk tuning, and scalable performance options. Whether you want a simple entry-level delete or a fully built performance setup, these kits provide a complete solution tailored to your goals.

Important ECM Unlock Notice

• 2017 models with ECM part number ending in 12676723 must be sent to EZ Lynk for bench unlocking. Some 2018s will require unlocking as well. 
• These ECMs are not currently flashable via standard EZ Lynk methods
• EZ Lynk releases firmware updates regularly, and compatibility continues to improve

If you experience a flashing or connection issue, contact EZ Lynk Technical Support: 877-207-5530

STAGE 1 | “TRICERATOPS” — Entry-Level Full Delete Kit

The Triceratops is built for owners who want a straightforward, no-frills delete solution. This kit includes the core components needed to fully delete the truck without additional performance upgrades.

Stage 1 Includes:

• EZ Lynk AutoAgent tuner
• 4-week EZ Lynk access
• Single custom tune (your choice)
• EGR delete kit
• DPF delete pipes
• CAN bus plug kit

Best for: Customers seeking a reliable, cost-effective delete with minimal hardware changes.

STAGE 2 | “VELOCIRAPTOR” — Value Delete Kit

The Velociraptor adds airflow improvements and expanded tuning options while maintaining reliability and drivability. This kit is ideal for owners looking for stronger performance without stepping into a full race-style setup.

Stage 2 Includes:

• EZ Lynk AutoAgent tuner
• 4-week EZ Lynk access
• Multiple tune options
• TCM tune. 
• EGR delete kit
• CAN bus plug kit
• Stainless steel downpipe (removes factory catalytic converter)
• 4" T409 stainless steel exhaust system for complete DPF/DEF delete
  • 5" exhaust may be substituted if 4" is unavailable
• Chrome or black exhaust tip (chrome shipped unless otherwise specified)

Best for: Owners who want improved airflow, power, and flexibility at an excellent value.

STAGE 3 | “T-REX” — Ultimate Delete Kit

The T-REX is our most complete and performance-focused package. This kit includes advanced tuning, full emissions removal, and premium supporting hardware to maximize power, drivability, and control.

Stage 3 Includes:

• EZ Lynk AutoAgent tuner
• Lifetime EZ Lynk access
• Multi-tune package
• Switch-On-The-Fly (SOTF) tuning
• Steering-wheel-controlled tune switching
• TCM transmission tuning
• EGR delete kit
• CAN bus plug kit
• Stainless steel downpipe (removes factory catalytic converter)
• 5" T409 stainless steel exhaust system
• Muffler with clamps (optional for sound control)
• Black or chrome T304 stainless steel exhaust tip (chrome shipped unless otherwise specified)
• S&B cold air intake

Best for: Customers seeking maximum performance, full tuning control, and a complete top-tier setup.

EZ Lynk Duramax L5P 6.6L Custom Tuning (2017–2023)

Our Dyno EZ Lynk tune files for the Duramax L5P 6.6L are custom-calibrated for real-world performance. Whether towing, daily driving, or building for power, these tunes are designed to optimize fueling, throttle response, and transmission behavior.

Tuning Options

• Single Tune: Custom tune built for a specific power level
• Support Packages: Ongoing tuning access for the life of your truck. CLICK HERE to see how SOTF works. 

Tuning Benefits

• Improved throttle response and torque
• Optimized fueling and shift points
• Enhanced drivability and towing performance
• Safe, reliable power designed for long-term use

Important Notes

• Designed specifically for 2017–2023 Chevy / GMC Duramax L5P 6.6L
• For off-road, closed-course, or race use only
• Not legal for use on public roads or emissions-controlled vehicles