How do you quieten the tappets on your Audi coupe 2.3 10v?

A lot of times people hear a ticking from the 10v's, turbo or N/A. Some times people will make a false diagnostic of the problem and replace the lifters with no avail. I have had many 5000 turbos and found the problem can some times be loose exhaust manifold nuts. After replacing the head with a brand new unit and torqing the manifold nuts to spec i have had to go back and do it a few more times. The exhaust gases blowing by the loose manifold sound like a popping or a ticking similar to the sound of bad or failing lifters This may be caused from the manifold expanding or contracting while going through heat cycles.