Muffler, Removing And Installing, AUDI A4/A5: Installing
WARNING: This page is about a different car, the 2021 Audi A4 Quattro. However, it is still accessible from the selected car via links, so may be relevant.
Install in the reverse order of removal while noting the following:
-- Install the exhaust system without tension. Refer to EXHAUST SYSTEM, INSTALLING WITHOUT TENSION .