AEM 52mm Boost Digital Gauge -30-35psi - 30-4406 fits_2014`BMW`M4 330mm x 32mm | (12

330mm x 32mm | (12

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AEM 52mm Boost Digital Gauge -30-35psi - 30-4406 fits_2014`BMW`M4 330mm x 32mm | (12AEM's Digital Boost Display Gauges combine unsurpassed accuracy, speed and control with an easy to read digital LED interface that displays boost in 1 PSI increments, and a sweeping LED "needle" that lines the edge and moves as boost from 0 to up to 50 PSI. The boost gauge's digital readout will automatically increase and decrease in intensity due to the built in ambient light sensing photocell. AEM's digital boost gauges include a 0 5v analog output