A software exists for estimating engine energy output primarily based on efficiency over a brief distance, particularly an eighth of a mile. This estimation generally makes use of elapsed time and car weight as major inputs. For instance, a faster elapsed time for a given weight suggests a better energy output. These instruments are sometimes accessible on-line as internet functions or downloadable software program.
Estimating energy output this fashion supplies a comparatively accessible and cost-effective efficiency metric. Whereas dynamometer testing affords a extra exact measurement, a short-distance performance-based estimation affords a sensible various. This method has historic roots in drag racing, the place eighth-mile occasions are a regular efficiency measure. The flexibility to deduce horsepower from this available knowledge permits for comparisons between automobiles and modifications, contributing to a greater understanding of efficiency dynamics.