The system is comprised of a dash-mounted controller and a high-pressure diaphragm pump designed to receive a Pulse Width Modulation (PWM) signal from the controller. The dash controller only measures 2.3" x 1.4" x 0.6"tall, perfectly suited to fit into any small cockpit space. Although small in size, it contains all the necessary controls to enable the user to cover the mid to high load range of any 0-5V output MAP sensor. Injection triggering point is set by the THRESHOLD potentiometer and is indicated by a blue LED on the controller. It is user adjustable between 1.5-4.5V. Adjustment to this potentiometer will determine the starting point of the water injection system. As shown in the chart below, 1.5V of a 2 bar MAP sensor represents approximately 0.4 bar below atmosphere (vacuum), while a 3 bar sensor represents almost atmospheric pressure. The injection % range is set by the GAIN potentiometer on the controller. As the red LED lights up, it indicates about 80% of full injection and will continue to get brighter until it approaches 100%. The gain potentiometer can be set to arrive at any level at any boost. The water injection system can be switched off via an ON/OFF push button, indicated by a green LED on the controller. This latest plug n play water injection from Turbonetics sets a new standard for the growing water injection market currently shared by many new water injection manufacturers. APPLICATIONS AND FEATURES: Charge-air cooling for forced induction engines Minimizing the onset of detonation Suitable to run water and alcohol mixtures Plug n play controller for ease of installation All components are properly engineered for reliable operation Intermittent diaphragm pump is more reliable than the normal windshield washer pump Built in thermal-cut in water pump Enable ìMeaner & Leanerî air / fuel ratio Increase octane rating on low grade pump fuel Dash controller allows real-time user flow control with status LEDs Only three wires needed to be connected for total control Can be used with any 0-5V load sensors (built-in over voltage protection circuitry) Inline 100-micron stainless steel filter Water tank - Not Included!