Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Porsche 911 Carrera Service Manual 1984-1989 - Coupe, Targa, and Cabriolet

Answers many questions the Haynes manual does not and has cleaer pictures and diagrams. Worth the extra cost over a Haynes manual. Very good diagrams of the DME fuel injection system and related electronics, for example.