Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The N54 is a twin-turbocharged straight-6 automobile engine from BMW. It was launched in late 2006 as a high-performance option for the BMW 3-Series, first to be released along with the new 3-series E92 Coupe, to be followed closely by other existing 3- series models, then with other BMW series as well. It is BMW's first production turbocharged gasoline engine in 26 years since the 745i in 1980. The engine won the International Engine of the Year award in 2007 and 2008. According to BMW, the N54B30 produces 306 hp (228 kW) and 295 ft•lbf/400 N•m. Third party testing has revealed the engine is significantly underrated, producing 332 hp (248 kW) and 311 ft•lbf/422 N•m in one test. The engine uses two small low-pressure turbochargers to remove turbo lag at low elevations. For this reason, the turbo pressure is only 0.4 bar (5.8 psi), as the engineering goal was to offer the same driving feel as with naturally aspirated engines. The ample torque of the engine combined with the lack of turbo lag provides the same feel as a small V8. The new engine debuted at the 2006 Geneva Motor Show.

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