Optimising Car Performance Modifications

The book itself is written in an easy to understand manner, with the concepts and ideas easily conveyed. It encourages you to try things, but to do so in a way which gets you useful information about the changes to your car. This book gets you comfortably into the subject, and crucially gets you thinking about it. - Easy to understand and accompanied by a wealth of good photographs, if you are into car turning, this is a cost-effective must-have title. - Iain P W Robertson. Providing easy techniques for measuring the performance of your car on the road before and after modifications, this full-colour paperback from Veloce shows you how to plot the shape of engine power and torque curves, how to measure the airflow associated with air filters, throttle bodies and induction kits, how to flow-test exhausts, how to check oil cooler, intercooler and radiator airflow and how to measure braking and suspension behaviour using a smartphone. Boasting techniques that’ll save you money whilst giving you real world results, this brilliant book (authored by AutoSpeed editor Julian Edgar) promises to enable you to make the most of your modified Porsche. - Ultimate Porsche. The book is a useful and essentially practical guide - providing you can find an empty enough stretch of road to put the author’s techniques to the test! Speedscene

Julian Edgar has worked as a teacher, writer, editor and photographer. His varied career has included editing a national automotive magazine, and writing for various online and print magazines for many years.

An enthusiast for all things mechanical and electronic, Julian is a hands-on car modifier, working from his own well-equipped home workshop, focusing mainly on suspension, engine management and aerodynamics. He is also a keen cyclist, and he has designed and built his own bikes and trikes.

He has written several books about car modifications, aerodynamics and electronics, as well as more general interest books about engineering and small-wheeled bicycles. Julian has also made a series of YouTube videos that discuss the subjects of his books.

He lives and works in New South Wales, Australia.