Removing
Place the car on a two post lift.
Disconnect the battery.
Remove the fairing under the engine.
Install a hydraulic jack under the exhaust pipe to support it.
Loosen the nuts 1 of the catalytic converter flange and pre-catalytic converter by inserting a tool through the sub-frame using several extensions.
Remove the clamp 2 of the exhaust pipe and remove the catalytic converter.
Installation
The installation is in order. reverse withdrawal.
Replace gaskets with new ones. Install a new clamp. Observe tightening torques.
Removal and installation of other elements of the exhaust system is not difficult.