The saloon (sedan) model was the first model sold of the 5th generation BMW 3 series. Debuting in the US in 2006, the E90 came in two trims, the 325i/xi and 330i/xi models. Later, the 3 Series lineup received an engine boost with the debuts of the 2007 328i/xi and 335i/xi models, the 335i/xi receiving the new 3.0L twin-turbo inline-6 engine. In March 2010, the coupe will receive a refresh for the 2011 model year. The updates focuses on modifications to the front and rear bumpers, wider kidney grille, new colors, new leather and trim color options, LED Corona headlights ("Angel Eyes"), and LED taillights. The 335i's N54 twin-turbo inline-6 will be replaced by the N55 twin-scroll turbo inline 6 engine. The 335is will join the line-up in the US market only which uses a modified version of the N54 engine to increase output and is available in both coupe and convertible forms only.