Are All BMW 335I Twin Turbo?
From 2007 through 2015, the BMW 335i was a viable option. The N54 and N55 were the 335i’s two main engines. The two engines each have a 3.0L inline-6 turbocharger. The N55 engine only has a single twin-scroll turbo, whereas the previous N54 engine uses two turbos. Despite having different turbos, the majority of BMW …