How fast can BMW’s N54 really go? From a 300-hp factory 335i to a verified 9.54-second quarter mile, the twin-turbo six that debuted in 2007 has become one of the most stretched engines in tuning history.
How fast can BMW’s N54 really go? From a 300-hp factory 335i to a verified 9.54-second quarter mile, the twin-turbo six that debuted in 2007 has become one of the most stretched engines in tuning history.