BMW 335i N54 with an Etuners custom tune only. The 07 BMW 335i N54 twin turbo is rated at 225kw (306hp) with a 0-100kph of 5.7secs. This car dynoed stock at 170.8kw (232 whp) at the wheels. With the installation of an custom Etuners Stage1 tune, power rose by 44kw to 214.2kw (291 whp). This