Nitrous Express Water/Methanol Injection Systems provide increased performance with or without nitrous. Water Methanol Injection cools the incoming air charge and increases the total octane effect of pump gas. This allows you to run increased timing which results in increased power and torque. When used with Nitrous, the need for timing retard is greatly reduced or eliminated. Boosted applications especially benefit from reduced intake temperatures. NX Water / Methanol systems include the latest technology and the highest quality components available.