AEM 30-0310 X-Series Inline Wideband UEGO AFR Sensor Controller X-Series Inline Wideband UEGO Controller features a weather-resistant, low-profile enclosure with status LEDs The X-Series Inline Controller includes a 0-5v and RS232 Serial Port output for feedback control and data logging, and an AEMnet (CANbus) output X-Series digital wideband technology gives these controllers the ability to read and report values that other controllers do not, which can deliver more optimized engine tuning and a safer overall operating condition Faster response time improves wideband feedback control, and can provide a safer, more powerful and accurate tune When tuning an engine using wideband AFR feedback control on an inertia dyno, dead time affects the data you are looking at because it is reported in a different operating location than when it actually occurred