Installation Instructions

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Snow Performance has combined performance, quality, and ease of installation in this new water-methanol injection kit designed for all turbo diesel owners who demand colder Exhaust Gas Temperatures (EGTs) while towing heavy loads. The Diesel Stage 3 Boost Cooler utilizes a 2D-mapped controller that commands injection based on boost pressure and EGTs to maintain extremely cold air inlet temperatures, 100-300 EGT decreases, decreased emissions, cleaner engine components, and increased fuel economy all while giving 65+ HP to help pull large hills with easy effort while towing. A must have for the diesel enthusiast that is concerned about the longevity of his truck that sees heavy towing. Non-invasive, the Diesel Stage 3 Boost Cooler controller is designed to mount on the steering column or the dash so no drilling/marring of the interior needs to take place or additional gauge pods need to be purchased. Functions as a boost gauge, water-meth controller and EGT monitor all in one! Concerned about warranty? The Snow Performance Stage 3 does not leave a signature on the vehicle leaving your diesel truck with its warranty intact.  Recommended for all daily driven diesel vehicles that see heavy towing where EGTs become dangerously high. 

Key Features

  • Made In USA
  • 7 Gallon Tank Included
  • Increased Fuel Economy
  • Reduces Exhaust Gas Temperatures by 100-300 Degrees
  • Increases of up to 65 Horsepower
  • 50-State Legal (C.A.R.B E.0.# D-723)
  • Increased Boost
  • Cleans Engine Combustion Of Carbon Build Up
  • Reduced Emissions for Improved Reliability

Methanol has an ignition temperature 80 degrees hotter than fuel. This means that methanol doesn’t pre-ignite your fuel, and importantly doesn’t change timing. A typical 3/4 or 1 ton pickup truck with a 7 gallon reservoir of fluid will go approximately 500 miles towing a heavy load and 1000 miles empty before needing to refill the tank. If you run out of fluid, in a pinch you can always just substitute plain old tap water and still reduce your EGT’s. If you don’t have a source for methanol and you won’t be using Snow’s proprietary Boost Juice, we recommend you use blue windshield washer fluid, -20 degrees Fahrenheit, with no added glycol. This can be found across North America in most auto parts stores or even at Walmart.


This product can expose you to chemicals which are known to the State of California to cause cancer. For more information go to
California Proposition 65 Notice
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