[lkchris]

So, bottom line is you have no valid beef with Porsche. In addition, the connection as regards service intervals is really weak.

Don't confuse recall information with warranty information--recalls are federally required and relate only to safety or emissions and so is the associated record keeping required. Otoh if a dealer replaced a piece of trim under warranty (or a motor) there's no requirement the manufacturer provide you the replacement date ... or the production date of the replacement part.