Master EFI Tuner - GM EFI
I am in no way affiliated with author or business, just thought I would share a good find.
I received my copy the day before Christmas. I don't usually push products but I have to on this book.
It is the first one I have read that actually explains what the tables do, what you should put in them and what the changes will do for HP Tuners. It has a lot of definitions for tables that are lacking in the HP Tuners help files.
Very good job, good examples and worded for the average person so they can understand the information, not all theory. I write service repair manuals for a living so I know how hard it can be to tailor the information so anyone can understand it. Well done.