First, this book is a bit out of date... 10 years old now. The author talks of many "current" technologies, but explanations and comparisons of the products are limited at best. There is a lot of emphasis on converting carburated engines to fuel injection, but only specific examples are given when it comes right down to it, leaving many people and possibilities out in the cold.
For those wishing to derive their own fuel-injection systems, this may be a good starter book, but leaves the reader with more questions than answers. It looks at converting a large cross-section of cars and trucks in the case-studies section, but only gives a general overview of the processes, with no real technical data to back them up or explorations of other options, which would be very helpful.