2009 Porsche 911 Carrera is now more eco-friendly than ever

oncars.com — Enter the 911 Carrera 4S with its vast number of improvements headlined by Porsche's new generation of direct injected engines. With gains made in power output and mileage numbers, and with significantly reduced emissions, Porsche's direct fuel injection - or DFI - makes for an even better rounded 911-model range. Apr 10, 2009 View in Crawl 4