I have the Maximum Boost (turbo) book. Bought it back when I had my turbo Supra. He did a good job of getting into the physics of everything. If you're piecing together your own kit, I'd highly recommend it. If you're buying a 'kit', I wouldn't really bother; unless you want to know what every part is and what it does (which you probably already do). I didn't find it all that useful, as my Supra was a big P.O.S. and not worth my time and $$$. But, the knowledge I've gained my someday be applied to my Teg. Then again, I'd probably learn more from the HAN turbo forum than from Corky's book.