Removal procedure
1. Disconnect the negative battery cable.
2. Remove the bottom engine cover.
3. Disconnect the downstream heated oxygen sensor connector (2 row of cylinders).
4. Disconnect the downstream heated oxygen sensor connector (1 row of cylinders).
5. Remove the screws securing the muffler downpipe bracket to the oil pan.
6. Remove the nuts securing the catalytic converter to the downpipe of silencer bank 1 and 2.
7. Remove gasket between catalytic converter and muffler downpipe.
8. Remove nuts (3 items) mounting the exhaust pipe of the muffler to the catalytic converter on the bottom (UCC).
9. Remove the gasket between the exhaust pipe of the muffler and the catalytic converter on the bottom.
10. Remove the front exhaust pipe.
11. Clean the sealing surfaces of the catalytic converter flange located on the bottom (UCC), and the exhaust pipe of the muffler.
12. Check the front muffler pipe for holes, damage, open seams, or other defects that could allow exhaust fumes to enter the passenger compartment.
Installation procedure
1. Remove nuts (3 items) fastening the exhaust pipe of the muffler to the catalytic converter on the bottom and a gasket.
Tighten
Tighten the nuts securing the exhaust pipe of the muffler to the catalytic converter on the bottom to a torque of 30 Nm (22 lb-ft).
2. Install the nuts securing the catalytic converter flange to the silencer downpipe with gaskets on banks 1 and 2.
Tighten
Tighten the nuts securing the catalytic converter to the exhaust pipe of the muffler to a torque of 40 Nm (30 lb-ft).
3. Install the screws securing the muffler downpipe bracket to the oil pan.
Tighten
Tighten the mounting bolts of the silencer exhaust pipe support bracket to a torque of 40 Nm (30 lb-ft).
4. Connect the lower heated oxygen sensor connectors.
5. Install the engine bottom shield.
6. Connect the negative battery cable.