Snow Performance Stage 3 Boost Cooler Water-Methanol Injection Kit – No Tank Chevy/GMC Duramax LBZ, LLY, LMM, LML, L5P SNO-530-T
Designed for Chevy and GMC Duramax owners running LBZ, LLY, LMM, LML, or L5P engines, the Snow Performance Stage 3 Boost Cooler system delivers a powerful combination of cooling, performance, and installation simplicity. This water-methanol injection kit is built for diesel trucks that tow heavy and need serious EGT control—without the tank, making it ideal for custom setups.
At the core of the system is a 2D-mapped controller that adjusts injection based on both boost pressure and exhaust gas temperatures (EGTs). Expect up to 300°F reductions in EGTs, cleaner combustion, improved fuel economy, and gains of 65+ horsepower—perfect for climbing steep grades with less strain.
The controller mounts cleanly to the dash or steering column with no drilling or interior modifications required. It combines the functions of a boost gauge, water-meth controller, and EGT monitor in one compact unit. And since it leaves no electronic trace, your factory warranty remains untouched.
Recommended for daily-driven Duramax trucks that see heavy towing and need reliable thermal management. For 50-state emissions compliance, refer to part #SNO-50100 (CARB E.O. #D-723).
Key Features:
- Compatible with Chevy/GMC Duramax LBZ, LLY, LMM, LML, L5P
- Reduces EGTs by 100–300°F
- Adds 65+ horsepower for towing and performance
- 2D-mapped controller adjusts injection based on boost and EGTs
- Non-invasive dash or column mount — no drilling required
- Combines boost gauge, injection controller, and EGT monitor
- Tank not included — ideal for custom installs
- 50-State legal (CARB E.O. #D-723)
- Warranty-safe — no electronic signature left on vehicle
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

