The LM-2 combines an air/fuel ratio meter, a full-function 32-channel datalogger, and powerful software to deliver a complete tuning workshop for less than the cost of one dyno day.  Whether you have a piggy-back fuel controller, race carb, aftermarket ECU, ODB-II tuning software, or a flash/chip programmer, an LM-2 is the tool you need to dial in maximum HP.  The meters award-winning digital signal processing technology provides data on exactly how rich or lean an engine is running at any load.  The LM-2s self-calibrating circuitry also compensates for changes in temperature, altitude, and sensor condition. To log RPM, or to Output the wideband signal to an external device you'll need the LM-2 Analog IN/OUT Cable optional accessory.  For OBD-II features you'll need the LM-2 OBD-II Cable optional accessory.  To record internally to your LM-2