Jeff Hartman. Drawing on a wealth of knowledge, experience, and a background of more than 1,000 magazine articles on the subject, engine control expert Jeff Hartman explains everything from the basics of engine management to the building of complicated project cars.
I found this book very well written, and almost entertaining in the tone of writing. I was part of the OpenECU project back in 2006-2008 and this book helped with my understanding of engine management systems.