A dynamometer tuning session, often referred to as a “dyno tune,” involves placing a vehicle on a dynamometer (or dyno) a specialized machine that measures engine power output. During this process, a technician adjusts engine parameters, such as fuel delivery and ignition timing, to optimize performance, fuel efficiency, or both. This optimization is typically performed after modifications to a vehicles engine or related systems.
Precise adjustment of engine parameters is crucial for maximizing power gains and ensuring the safe and reliable operation of modified vehicles. Historically, tuning was often done by ear and feel, leading to suboptimal results and potential engine damage. The advent of dyno tuning provided a more scientific and precise approach, allowing for measurable improvements and a deeper understanding of engine behavior under load. This ensures that modifications work harmoniously with the existing engine components and prevents potentially damaging conditions like detonation or pre-ignition. It also plays a key role in meeting emissions standards, particularly with modified vehicles.