aRacer AF3 Professional Wideband with Bosch LSU 4.9 O2 Sensor (NEW)

The aRacer AF3 Professional AFR Module is the latest innovation in air-fuel ratio tuning, designed to plug directly into aRacer ECUs—no additional harness required. It features the new Bosch 4.9 wideband O2 sensor for exceptional accuracy and ultra-fast response times. The AF3 also supports the use of alcohol-based fuels including E30, E50, and E85, making it ideal for high-performance builds running alternative fuels. Whether you're tuning a Honda Grom, MSX125, or any motorcycle that needs precise AFR data, the AF3 is a must-have for smooth, optimized performance!

aRacer AF3 AFR Module works in conjunction with the aRacer DG-2 or aRacer SportD Multi-Function Display from aRacer with a 1 to 2 Harness.

NEW AF3 Features:

• Faster: Response +10% improvement vs AF2
• Support the use of alcohol fuel: E30, E50 and E85
  
• Estimated high exhaust temperature warning (800c)
• Advanced O2 Heating Control & Over Temperature Protection
• Support Bosch LSU4.9 and LSU4.2 senors.
• Diagnostic for Module & Bosch O2 sensor
• Simpler: Simple Wire Connection (no longer require 1 to 2 cable)
• Only supports RC Super X and RC Mini X ECU

NOTES: Required M18 Oxygen Sensor Bung on exhaust. See Weld-On Oxygen Sensor Bung