Does it make much difference whether you use a UATor not as to the type of clunk in your final tank?

Iwant the best clunk Ican in the final tankas Idon't want air to pass through.Ifair did pass through, whether it ends up in the UAT or engine, it is not a good thing. If you want to know people's preference over clunks you will get a much bigger response if you open the question up.</p>