Abstract: An apparatus for replicating an engine and/or exhaust sound of a predetermined vehicle includes files stored in computer-readable form in a memory library of the engine and/or exhaust sound of the predetermined vehicle. A microcomputer operated controller receives engine data such as the RPM of the engine of the personal vehicle and continually selects which files to obtain and use. The controller adjusts the sound pattern to optimally correspond in a preferred way with the RPM of the engine of the personal vehicle and the controller provides an output signal that is amplified and fed to a speaker for audio playback of a replicated sound of the engine and/or exhaust sound of the predetermined vehicle in the personal vehicle. A speaker disposed outside the vehicle includes a conical or cylindrical shape. A diagnostic capability is also disclosed. Connection to an OBD II connector provides the desired engine data.