According to engine pics shown the new 7 series will have a Variable Turbine Geometry Turbocharger similar to the one found in the 911 Turbo and it is apparently used on BMWs famous 3.0-litre straight six engine. So this might the replacement for the twin turbos used for the N54. A single turbo will reduce weight and deliver an even smoother power delivery along the rpm spectrum, as we have all seen in the 911 turbo with VTG.
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