WHAT IT DOES AEM’s wideband air/fuel gauge unites unsurpassed accuracy, speed and control with an easy to read, analog interface. The AEM wideband also offers a 0-5v analog output for use with data loggers and virtually any engine management system, such as the AEM EMS or FIC. WHY YOU WANT ONE The system features a Bosch sensor with an accuracy of .1 AFR, making it among the fastest and most accurate widebands available. The backlighting is user adjustable to 7 colors, (white, blue, green, red, orange, light blue, and aqua), allowing users to easily match the wideband gauge to most factory gauge clusters. Accurate to .1 AFR Adjustable backlighting via a dial on the back of the gauge Two status lights for error detection and operating status Available in white or black gauge faces Includes black and silver interchangeable bezels 320 degree viewing area for unsurpassed resolution Includes Bosch sensor for optimum accuracy and reliability 0-5v analog output included for use with data loggers and virtually any engine management system