Mechanical tachometer with a graphic LCD display. Detachable control module. Gauge with wideband and OBDII functionality. Fully adjustable color LED backlight for the gauge dial and LCD. Adaptive alarms in a tach. Self-Contained data logger in a tach. One-touch recording and instant replay of any parameter. "Plug'n play" expansion modules. Rugged aluminum and santoprene design. All connection to the car can be unplugged and the unit can be easily moved from one car to another, automatic recognition of attached modules.