Aracer AF3 Professional Wideband AFR Module LSU 4.9 / 4.2 O2

NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES   aRacer AF3 Professional Wideband O2 AFR Module is the new and improved wideband AFR module that now comes included with a Bosch LSU 4.9 or 4.2 wideband oxygen sensor! The AF3 is a better upgrade over the older AF2 model! The AF3 is the latest and greatest AFR module from aRacer.     Compatible with BOSCH LSU 4.9 and LSU 4.2 sensors High exhaust temperature warning (>800°C) Advanced O2 heater control & over-temperature protection Enhanced digital transmission speed by 10% Supports ECU & BOSCH O2 sensor fault code detection Compatible with ethanol-blended fuels: E30, E50, E85 Only supports Super X & Mini X ECU, software version must be S120 or above NOTE: A 18mm o2 sensor bung is required on the exhaust header. If your exhaust header pipe does not have an available o2 bung, then you would need to add one. Please see the related items below for the stainless steel o2 bung and cap.   NOT LEGAL FOR SALE OR USE IN CALIFORNIA ON ANY POLLUTION CONTROLLED MOTOR VEHICLES