Quick view Snow Performance Snow Performance Stage 2 Boost Cooler N54/N55 Direct Port Water Injection Kit - SNO-2169-BRD Compare $2,105.46 $1,503.99 Snow Performance has combined performance, quality, and easy installation in this new water-methanol injection system engineered specifically for all N54/N55 Engines. Increase your pump gas octane by 25 points and make more power efficiently with a... Add to Cart Add to Cart