Exhaust System, Checking For Leaks
WARNING: This page is about a different car, the 2009 Audi TT and 2008 Audi TT. However, it is still accessible from the selected car via links, so may be relevant.
-- Start engine and let run at idle.
-- For leak test, seal tailpipes, for example with cloths or plugs.
-- Listen to see if connections points at exhaust manifold to cylinder head, front exhaust pipe to exhaust manifold, etc. are leaking.
-- Correct leaks.