You would think that having your German vehicle serviced by German mechanics in nearly the same town where the vehicle was designed and tested would make troubleshooting a breeze? HA! not so! During various stages Big Sally was hooked up to the diagnostic machine. Throttle position sensor? Nein! Throttle body? Nein! Mass air flow sensor? Nein! On two occasions Porsche Reutlingen was confident they fixed the glitch pulling out of the bay with broad smiles only to return within two minutes sporting the more typical Schwabisch frowns. These are the same people who service and prep ALL of the Hahn motorsport 911s competing in Deutsche Porsche Cup!
Follwing Dack's advice I dropped off a case of Budweiser bottles with my Service Advisor....
I was nearly blinded by his smile of gratitude.