BMS Water / Methanol Injection System — select controller type

Purpose of water/methanol injection

A WMI system meters a water/methanol blend through an intake nozzle to cool the charge and support octane when paired with compatible tuning. Package configuration depends on vehicle, power level and installation: it requires a controller, pump, nozzle, high-pressure line, fittings and suitable tank.

Select the controller

Normal JB4 (FSB) lets JB4 control pump and solenoid; JB4PRO uses its harness because FSB control is built in; Universal (AEM Controller) is a separate controller for universal setups. Match other WMI components to the control method.

Build the system

Tank, pump, nozzles, fittings and lines may be selected from separate Fuel-It!/BMS products for the vehicle. This listing begins the configuration; confirm every required component before installation.