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This test document is applicable to all superchargers not requiring fuel to be added to the inlet air prior to the supercharger. This SAE Standard only applies to bench testing. Any maximum speed, temperature, and pressure ratios supplied by the manufacturer should be for this use only and may not apply to applications of firing engines. This document has been adopted by SAE to specify: a A standard basis for supercharger efficiency rating b Reference inlet air supply test conditions c A method for correcting observed efficiency to reference conditions d A method for presenting these results in an accurate and usable way e A method to compare superchargers without the affects of engine dynamics and intercooling