Delphi Corp. Dave Logozzo is director of manufacturing operations at Delphi Corp., the world's largest independent producer of automobile components. He discusses the company's creation of high-ranking value-stream managers and their role in the enterprise. Here are some of the questions he answered: How is Delphi applying lean? How do you use value-stream maps? What have you learned from these value-stream maps? How do you map your flows? How hard was it to settle on a lean operating strategy having practiced other concepts like Theory of Constraints and agile manufacturing? Is value-stream mapping the silver bullet of lean? What have you discovered through your value-stream mapping exercises? How do value-stream maps of a manufacturing process help in product development? As markets turn down will you be able to respond more easily to changes in demand? Do you see lean as becoming part of the manufacturing culture within Delphi? How do you confront the make-versus-buy question in a lean enterprise? Do the value-stream managers feel like a fish out of water? Do they carry weight in order to make decisions and execute the maps? Are there any software tools to help draw up the value-stream maps? To view questions from other interviews in Lean Machines, Click Here. Click Here to order a copy of Lean Machines.