This guide is also known as mk.I. information from various sources, pulled mostly from Audi related forums on the Internet about the tuning and troubleshooting original Audi TT. Although the information is believed to be correct, it provides no warranty of any kind. The manual is divided into three parts. First part, Chapter 2, contains information such as you fix common problems, and some general information. Second part, Chapter 3, contains instructions for the various functions optimize. The third part, Chapter 4, is a collection of lists and tables in an easily printable form.