How to Install FabSpeed O2 Sensor Spacers on the 2009 Porsche 911 turbo

I installed the FabSpeed O2 sensor spacers on my 2009 Porsche 911 Turbo to help with CEL I kept getting. The car had hi-flow racing exhaust at the time. The spacers helped decrease how often the CEL came on but didn't stop it. I have since gone back to stock exhaust because of the CEL and the noise. The racing exhaust were much louder than I really preferred. Thanks for watching.