Snow Performance Chevy/GMC Stg 3 Boost Cooler Water Injection Kit (SS Braided Line 4AN Fittings)

The stainless steel braided lines and 4AN fittings on this Snow Performance Stage 3 Boost Cooler kit are a solid choice for managing exhaust gas temperatures (EGTs) in your Chevy or GMC Duramax diesel. This system is designed to inject a water-methanol mixture into your engine's intake, which helps to significantly lower intake air temperatures. This cooling effect is crucial for heavy towing applications, as it can lead to EGT decreases of 100-300 degrees, helping to protect your engine's longevity and potentially increase fuel economy.

What really sets this kit apart is its 2D mapped controller. It intelligently commands injection based on both boost pressure and your EGTs, ensuring you get the right amount of cooling precisely when you need it. This advanced control also means the system functions as a boost gauge, water-methanol controller, and EGT monitor all in one unit, which can be mounted non-invasively on your steering column or dash. The kit includes a 7-gallon tank, making it ready for extended trips and heavy hauling. It's a popular option for owners concerned about keeping their Duramax engines running cool and strong under demanding conditions.

This kit is recommended for daily driven Chevy/GMC LBZ, LLY, LMM, LML, and L5P Duramax owners who frequently tow heavy loads and need to keep EGTs in check. While this specific kit is not CARB approved, Snow Performance offers a 50-state legal version (Part# SNO-50100) if that is a requirement for your state.