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Lets set the story straight:
Porsche 997 Turbo is the first GASOLINE production engine to use VTG turbos. High exhaust temperatures from the combustion of gasoline have in the past made the implementation of this technology troublesome but the use of higher quality materials in the turbos allow it to be used.
VTGs are not used on the N54 gasoline engine. They may very well be used on the diesel engine in the 335d though as most all modern turbo diesel use them; even the VW TDI engine uses them.
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2008 BMW 535XI WAGON
Sapphire Schwarz on Schwarz
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