[QUOTE=AUDIOGUY
The Porsche engine seems to do this frequently. My buddy with a 911 said his does this and he attributes it to the design of the engine and the oil system.
[/QUOTE]
The "dripping" noise is caused by the Cat. Conv. normally cooling off after you turn off the engine. This "noise" is common in all cars with Cat. Converters and is not inherent with the Horizontal configuration of Porsche Engines