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Turbo taboo may end for BMW M's

Automotive news reports on a potential turbocharged engine for BMW's M series.

Automotive News

The turbo has always been taboo for BMW's high-performance M models. But that may change.

Although BMW has preferred high-revolution, naturally aspirated engines, the next M5, due in 2011, is expected to get a twin-turbo V-8 instead of a naturally aspirated V-10, insiders say.

Variations of the twin-turbo, 4.4-liter V-8 that powers the X6 premium crossover have been tested with good results, an insider said.

A source also said the company has had "good experience with the performance characteristics" of the X6 base engine, a 3.0-liter, six-cylinder biturbo. It comes "very close to a large-displacement, naturally aspirated engine," the source said.

(Source: Automotive News)