mine went on my a4 t sport but what and where is it?
Re: ignition amplifier???
It's more commonly called a 'coilpack' on the Audis... they have four, one per cylinder which plug directly onto the top of the spark plugs, and they are situated on top of the engine in a row.
Just like these four here...
To remove them all you have to do is unplug the electrical connector and unscrew the two machine-head screws holding them to the cylinder head and then pull them off the spark plug.
Hope that helps...