Quote:
Originally Posted by Jason
What's a twin-scroll turbo? In a regular turbocharger, exhaust gas from a single header hits the impeller. In a twin-scroll set up, two exhaust headers feed two streams of spent gas into a single impeller 180 degrees apart. This is better because the two streams of gas roughly mimic the inherent smoothness of an inline-six cylinder engine, thereby spinning the impeller in a smoother fashion. This is apparently more efficient. Power, however, is unchanged at 300 horsepower and 300 lb-ft of torque.
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It looks like the auto world has finally received some coaching (from bmw) on how to explain the difference between twin scroll and twin turbo.