Here are some representative examples of the uses and accomplishments of performance tuning: This chapter offers a high-level overview of engine performance tuning and the compromises that must be made when deciding which aspects of an engine’s operation to modify. Most engines have substantial room for improvement in power or economy if you’re willing to give up a little safety or use a different fuel than the engine was originally tuned with. Most performance tuning involves nothing more than changing the operating conditions of an engine to achieve goals different than those of the original design. And these figures don’t even include the many modified vehicles that compete in amateur racing around the world. This huge industry-worth around $19 billion annually worldwide, according to the Performance Racing Industry-draws almost half a million people yearly to compete in auto races in the United States alone. Performance tuning is necessary for most automotive racing. In today’s vehicles, this usually means modifying an engine computer, even for mechanical modifications.
Performance tuning, frequently referred to simply as tuning, involves altering an engine’s operating parameters to improve vehicle performance. The Car Hacker's Handbook: A Guide for the Penetration Tester - Craig Smith (2016) Chapter 13.
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