This 2007.5–2010 Duramax LMM 6.6L All-In-One Delete Kit is built for serious Duramax owners running a GMC Sierra / Chevrolet Silverado 2500HD & 3500HD. The goal is simple: replace restrictive factory components, increase airflow, improve reliability, and deliver smooth, powerful drivability—especially under towing and daily use.
Whether you’re looking for better throttle response, lower EGTs, stronger towing performance, or a more responsive truck overall, this kit delivers everything you need in one complete package.
What’s Included (All-In-One Kit)
Tuning Device Options (Choose One)
- EFI Live AutoCal V3
- EZ-Lynk AutoAgent 3.0
Custom Tune File Options
- Single Tune
- SOTF (Switch-On-The-Fly) – 5 Power Levels
- SOTF CABLE INCLUDED ( works with both Efi live and Ezlynk )
✅ Engine tuning included
✅ Transmission tuning included (improved shift strategy, drivability, and reliability)
EGR Solution Included
-
EGR Upgrade Kit
- Removes factory restriction
- Improves long-term reliability
- Helps keep airflow clean and consistent
- Exhaust Options (Choose One)
- 4” Stainless Steel Exhaust System
- 5” Stainless Steel Exhaust System
- 4” Stainless Steel Race Pipe
Exhaust Features
- High-quality stainless construction
- Mandrel bent for max flow
- Includes clamps and hangers for smooth install
- Compatible with Cab & Chassis models
Why This LMM Delete Kit?
- Built for real-world reliability + performance
- Custom tuning — not generic base files
- Better airflow = better response, towing power, and drivability
- Complete package with support available if you need it
- Transmission tuning included for a stronger overall setup
Installation Notes
- EFI Live requires a Windows laptop for flashing
- Professional installation recommended