An automotive performance tool determines the power reduction between an engine’s output at the crankshaft and the power measured at the wheels on a specific brand of dynamometer. This tool is used in vehicle tuning and performance analysis. For example, a vehicle might produce 400 horsepower at the engine, but only register 320 horsepower at the wheels when tested. This difference represents the drivetrain loss, which includes friction and inertia within components such as the transmission, differential, and axles.
Understanding this loss is crucial for accurately gauging the impact of modifications to an engine. Knowing the expected reduction allows tuners to set realistic performance targets and to verify the effectiveness of their adjustments. Historically, estimations of drivetrain loss relied on generalized percentages. This tool offers a more precise evaluation, contributing to more effective tuning processes.
