Alfa Romeo 155 Workshop Manual - Tower Village Consulting Alfa Romeo 155 Workshop Manual: The information contained on this site is presented as PDF files. To read them you need Adobe Acrobat Reader installed. .:BerlinaSportivo - Alfa Romeo 155 Q4 and Sports Saloons The Alfa Romeo 155 Manuals & Technical information. These files are scans of the official Alfa Romeo workshop manuals, lots and lots of useful information along with plenty of diagrams. Alfa Romeo 155 Q4 Technical Articles. The Alfa Romeo 155 Q4 ECU information. Aftermarket ECU map files. A technical look at the Viscous Coupling.