Ultra Gauge Features
→ Display a possible 78 gauges; RPM, Coolant temp, Intake Air temp, Distance, Intake pressure, Mass Air Flow, Boost, and more. (vehicle dependent)
→ Mileage gauges; Instantaneous MPG, Average MPG, Trip gauges, gallons per hour, and more
→ Oil change & Service Gauges
→ Display and clear emissions trouble codes 
→ Customizable alarms for every gauge. Alarms are both visual and audible
→ UltraGauge is a standalone and needs no other device to operate. Simply plug UltraGauge into the OBDII port and its ready
→ Gauge pages can be configured to display 4, 6 or 8 gauges (see images)
→ Display Brightness automatically adjusts to ambient light; automatic night driving
→ Performance Measurements; 0-30, 0-60, 0-100, 1/8 mile, 1/4 mile
→ Emissions Readiness Monitors
→ Speed calibration for tire, wheel, transmission, & differential chang
→ User Manual: https://ultra-gauge.com/ultragauge/support/Ultra_Gauge_EM_Plus_v1.4_8_26_20.pdf