Removal of Stock System: 1. Apply a penetrating lubricant liberally to all exhaust fasteners, hangers and rubber insulators. 2. Loosen the nuts that fasten the rear Oxygen sensor and remove the sensor from the stock exhaust system. Keep the existing gasket for the oxygen sensor as it will be needed for install. Refer to Figure 1. Figure 1 3. Loosen the bolts on the flange in front of the Oxygen sensor. Refer to Figure 1. 4.
