Fuel and Vacuum Line Diagram (1985.5 and Newer N/A 944s)
Porsche 944: Automotive Repair Manual--1983 thru 1989, All Models Including Turbo (Haynes Manuals): John H. Haynes, Larry Warren, Chaun Muir: 9781850106579: Amazon.com: Books
These Outdated Car Websites Are Reader Favorites and Full of Info