Oxygen Sensors

When the original exhaust was fabricated, they forgot to add bosses into the catalytic converter for the oxygen sensors. So I have had the exhaust off and back at the shop having the cat modified. I now have bosses welded in to the cat at the front and the rear for the pre and post oxygen sensors. As the old Focus sensor cables were quite short, I had to splice in an additional 18 inches of new wire (4 wires in each sensor) per sensor.  These now route under the car, up inside the engine bay along the drivers foot well and up behind the engine to the loom.