Overview Reviews Product Description Upgrade your water methanol injection kit to the Snow Performance Stage 4 Boost Cooler. Recommended for applications running 100% methanol looking to control the injection system similar to a OEM fuel system. Product Videos Custom Field Product Reviews Write a Review Write a Review × Snow Performance Snow Performance Stage 4 Boost Cooler Water Controller Upgrade - SNO-70000 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *