For 1990-2009 cars

1. Remove the intake manifold. Refer to Intake Manifold Replacement.
2. Remove the front exhaust pipe lower bracket bolts and the front exhaust pipe lower bracket.
3. Remove the front exhaust pipe nuts.
4. Remove the pup converter gaskets.
5. Remove the front exhaust pipe-to-front-muffler nuts.
6. Remove the catalytic converter gasket.
7. Detach the front exhaust pipe assembly from the rubber hanger.
8. Disconnect the oxygen sensor connectors.
9. Remove the exhaust manifold heat shield.
10. Remove the exhaust manifold retaining nuts and the exhaust manifolds.
11. Remove the exhaust manifold gaskets.