View Here : What Is Ecoboost
The 3.5 ecoboost is a DOHC twin turbo direct injection V-6 engine. The standard 3.5 is very similar to the 3.7 it replaced it does NOT have direct injection or turbos, however it is a DOHC V-6. 3 people found this helpful.
The EcoBoost is also available in other flavors—a 2.7L V6, a 2.3L, 2.0L and 1.6L 4-cylinder, and a 1.0L 3-cylinder. The EcoBoost is a gasoline turbocharged direct injection (GTDI) engine that incorporates three fuel-saving, performance-enhancing technologies into one engine design—forced air induction via turbocharging, high-pressure direct fuel injection and variable cam timing.