![]() The system variably adjusts the timing of the valves by changing the position of the camshaft relative to the drive gear. The BMW VANOS (variable nockenwellen steuerung in German) is a variable valve timing technology developed by BMW. However, for tuning purposes it is important to at least be able to identify VANOS problems, and know how to fix them as a faulty solenoid can cause a major loss of horsepower. The VANOS system isn't unique to the N54 engine it is used in many variations of BMW engines. ![]() This guide brought to you by BMW N54 Tuners will explain what the VANOS system is, the importance of the technology, and most importantly when and why it should be replaced or rebuilt.
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