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. NOTE: Standard gauge (without vent option) REQUIRES the Jetta style vents, which fit both Jetta and Golf GTI cars. If you have a Golf / GTI You must use the Jetta style vent as shown in the photo above, or choose the vent-preinstall option. TDI support is still in development, but will function for Boost, coolant, air, etc, but no egt. P3 MULTI-GAUGE Boost and Vacuum from OBD2 port Plug and Play install - just plug into your obd2 port and install into dash! Optional analog sensor for reading boost on tuned/big turbo cars. OBD2 Data for Coolant Temp, Intake Air Temp, Exhaust Gas Temp*, Throttle Plate, Speed, RPM with Shift-light, Battery voltage and more! Optional Auto-Dim or Manual Dimmer Code Read/Clear 2 x universal 0-5v linear analog inputs Includes Digital Display, Custom OBD Wire Harness, Control Box. DOES NOT INCLUDE OEM VENT