Utilizing the most advanced engine technology, PowerTech Plus engines have a 4-valve cylinder head, full-authority electronic controls, variable geometry turbocharger (VGT), and cooled exhaust gas recirculation (EGR). They are available in larger displacements (4.5L, 6.8L, 9.0L, and 13.5L) and provide ultimate performance and best-in-class fuel economy.