Audi A4 / S4 / A5 / S5 / RS4

P3 Boost Gauge and P3 Multi-Gauge products for Audi A4, S4, A5, S5 and RS4 models. Multi-Function digital vent gauge displays critical vehicle metrics like coolant temp, intake air temp, ignition timing, speed, RPM with shift light, and battery voltage - as well as peak recall and run/record recall in all modes.