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Cosworth Engineering has designed and developed a new high performance V6 street engine with a number of technical innovations. Internal Exhaust Gas Recirculation (EGR) control is achieved by combining port and plenum throttling. Port throttling allows long duration cams to achieve high specific power output while still maintaining good part throttle economy and the ability to idle smoothly at 700 rpm. The engine has been designed to comply with the most stringent emissions legislation likely to be imposed. A centrifugal air/oil separator integrated into the balance shaft provides superior Crank Case Ventilation (CCV) performance. Unique cylinder head and cylinder block structures optimise rigidity while reducing engine weight.