Snow Performance Water-Methanol Injection Pump 300PSI ProLine300 UHO (Ultra High Output) Pump Extreme Environment SNOW Performance 300 PSI UHO water methanol injection pumps offer unsurpassed pressure, technology, and reliability. All 300 PSI pumps come individually tested to ensure quality and reliability. Although similar looking pumps exist, they do not come with the handful of propriety features that set the SNOW Performance.