The N54 has was used in a wide range of BMW’s starting in 2006 with the 335i. In 2007 it was used in the 135i and 535i. Later in 2008 it was introduced in the X6 xDrive35i and again in 2009 on the Z4 sDrive35i. While the engine is well known for making good reliable power from…

Read More

The E46 M3 had a couple major issues, one of the lesser ones is the SMG gearbox. The hydraulic pump often fails resulting in a costly repair. If this happens to a car you own it often make sense to convert the car to a manual rather than fix the SMG unit. Manual E46 M3’s…

Read More

Why Does This Happen? Modern BMW engines now feature direct injection,which offers advantages in fuel consumption efficiency as compared to conventional port fuel injection. The N54, N55 engine of the 335i, 135i, and 535i are all direct injection; this means in particular that the fuel is injected directly into the combustion chamber of each cylinder and…

Read More