P3 Digital gauges provide the highest level of OEM integration and color match offering more features than any other gauges in their segment. Starting at a price competitive to single feature old-school needle gauges, they offer unmatched feature to price ratio. All gauge models include an on-the-fly configuration menu for setting units (BAR/PSI for boost, and C/F MPH/KPH for multi-gauge values), as well as feature options, and ambient calibration. See www.p3cars.com/install for more details. Specifically designed to support the M135i, and M235i and F87 M2 platform, also supports 116i, 118i, 128i, 228i P3 Boost Gauge Boost and Vacuum with integrated 45psi sensor. Battery Voltage readings with quick-look and sleep-check. Optional Auto-Dim or Manual Dimmer Includes Digital Display, AuxBox w/Sensor, Vac Tubing, Wiring, Wire-taps, Zip-Ties DOES NOT INCLUDE OEM VENT