Multi-Input N/A Controller 0-5v/MAF Frequency or Voltage/Duty Cycle/Ext MAPNote: FOR OPTIMUM RESULTS, ALL WATER METHANOL INJECTION SYSTEMS AND FLOW GAUGES SHOULD BE RUN WITH AN WMI INLINE FILTER (PN 30 3003). For additional insurance against unintended flow, particularly when the pump and tank must be installed higher than the injections nozzle, we recommend adding our optional High Flow Low Current WMI Solenoid (PN 30 3326).