Innovate MTX - AL Series gauges deliver patented DirectDigital wideband sensor control with 100 percent digital wideband airfuel ratio technology These microprocessor - driven gauges feature high performance and high - torque 270 degree stepper motors, superior needle holding force for high shock and vibration applications, plus Innovate MTs serial inout. They come with Bosch LSU 4.9 wideband O2 sensors and offer the ability to calibrate the oxygen sensor for maximum accuracy. Innovate MTX - AL Series gauges also deliver style with interchangeable black and silver bezels.