Please take a look to http://www.bentleypublishers.com
A very informative book is
Bosch Fuel Injection and Engine Management
How to Understand, Service and Modify
by Charles O. Probst, SAE
Softcover, 8-3/8 in. by 11 in.
352 illustrations and diagrams
Bentley Stock Number: GFIB
I am very satisfied about this book.
86, 420SL, Type 107