GM Duramax LMM 6.6L (2001-2022)

The legendary Mini Maxx V1 tuner is back—better than ever. Originally the tuner that revolutionized diesel performance, this updated version delivers advanced tuning capabilities, a high-resolution screen for easy navigation, and shift-on-the-fly...

Unlock your truck’s full capability with the EFILive AutoCal V3 DPF Delete Tuner, complete with Black Bandit custom tuning. Built for GM Duramax 6.6L engines, this tuner delivers horsepower gains, improved fuel economy, and real-time control, ens...

Open up your LMM’s airflow and let it breathe. Designed for 2007.5–2010 Silverado and Sierra 2500HD/3500HD pickups equipped with the 6.6L Duramax LMM, this downpipe-back exhaust system improves exhaust efficiency, lowers backpressure, and produces...

Bring back the boost your Duramax was built to make. If your turbo is showing signs of wear—slow spool, inconsistent power, or oil-related issues—this direct-fit replacement restores strong, predictable performance. Built for work-truck duty and d...

Serious clamping strength for serious Duramax builds. This Gator Heavy-Duty Head Stud Kit is designed to reinforce the cylinder head sealing system on 6.6L Duramax engines from 2001–2016. Whether your truck tows heavy, runs aggressive tuning, or s...

The Duramax LBZ/LMM Y-Bridge Kit replaces the factory intake bridge, which is prone to blowing apart under boost and causing drivability issues. Built with heavy-duty materials and a high-flow design, this kit improves airflow, lowers exhaust gas ...

Boost Reliability & Performance The LMM 6.6L EGR Delete Kit is a proven upgrade for 2007.5–2010 GMC Sierra and Chevrolet Silverado 2500/3500 Duramax 6.6L engines. By eliminating the restrictive EGR system, this kit reduces common issues such a...

Expand your EFI Live AutoCal with this Tune Package, engineered for GM Duramax trucks. Perfect for adding another vehicle to your existing AutoCal, this package provides custom tune files and optional SOTF (Shift-On-The-Fly) switch for real-time c...