Looks like it originally had a cheap knock off O2 sensor which failed pretty quick

The kit arrived with a damaged O2 sensor that will cost $80 to replace

each time.now it seems I have a bad O2 sensorI was told to go buy a new

Never worked, bad o2 sensor with either too lean at idle (afr +17) or too rish with boosting (afr 10 and below)

Pretty sure the sensor is a fake, bosch o2 sensors have the part number on the connector and say bosch on them somewhere

They did not refund my money or respond to further emails about the issue when I asked them to explain themselves or offer me a 'good' o2 sensor if they were going to insist every one I bought was bad