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BMW 335i E90 proves a $10k twin-turbo legend for reliability

The BMW 335i E90 has quietly shifted from risky tuner temptation to one of the most compelling $10,000 performance buys, ...
Motor Authority

BMW acknowledges N54 engine turbo lag, releases software update

Ralph Hanson November 19, 2008 Comment Now! In an effort to address specific noise concerns, BMW in the United States updated the turbocharged engine software on 335i/xi and 535i/xi models built from ...