Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2015 Audi RS 5, 2014 Audi RS 5, and 2013 Audi RS 5. However, it is still accessible from the selected car via links, so may be relevant.
-- Start the engine and let it run at idle.
-- Seal the tail pipes with cloths or plugs during the leakage test.
-- Check for leaks by listening at connections between the cylinder head and exhaust manifold, catalytic converter and front muffler, etc.
-- Repair detected leaks.