The wunderkinds in Wiessach have wrought a new head of the family in the form of the 2011 911 Turbo S, the first 911 S model in five years and the first for the 997. In Porsche parlance, the S suffix generally means more power and better handling, and this car appears ready to live up to the badge.As we surmised last August, the twin-turbo flat-six is boosted to 530 horsepower, though it sips