The invention refers to a device for the manufacture of sausages with a filling unit with a filling tube for filling sausage sleeves and a length unit for the controlled delivery of the filled sausage sleeves. Performance evaluations include random perturbations, systematic perturbations, or both to effectively characterize the impact of model errors, metrology system imperfections, and calibration errors, among others. A database of OEM vehicle software modules is accessed by the third party, customer service center and at least one software module particular to the vehicle is provided to the interface device.