The wideband oxygen sensor is a more accurate variation of the standard zirconia O2 sensor. Introduced by Robert Bosch in 1994, it has been used to meet the ever-increasing demands for better fuel economy, lower emissions and better engine performance. Wideband sensors eliminate the lean-rich cycling inherent in narrow-band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry, this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor. UEGO sensors are also commonly used in aftermarket dyno tuning and high-performance AFR display equipment.