Exhaust Gas Oxygen Sensors (O2 )(Optional)
Wire colours for sensor input: Orange and Grey.
EMS STINGER 4 ECUs has a provision an O2 sensor. The O2 sensor must be mounted in the exhaust pipe near the exhaust header. If the exhaust system does not have an existing sensor mount then new mounts will have to be attached to the exhaust system. You can use a Bosch 4 Wire wideband sensor (Part Number 0 258 104 002) or the Innovate LC1 or LM1 O2 Kit. The Bosch sensor can be wired directly to the ECU without calibration. The LC1 kit output voltage must be calibrated to work with the STINGER 4 ECU. Use LM Programmer software to calibrate the LC-1 so that the output of the LC1 reads 0.050 volts at 8.0 air-fuel-ratio and 0.950 volts at 22 air-fuel-ratio.
Stinger 4 instruction manual version 2.0