BMW Turbo Electric Valve N55 Genuine 11657601058

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Turbo Electric Valve

The turbocharger cut-off valve protects the turbocharger when boost is present in the intake system but airflow has been disrupted. The primary function of this part is to prevent compressor surge which happens when the turbo is forced to spin backward.

This valve can be a culprit for under boost related fault codes. Visual inspection of this valve is required to ensure the diaphragm is in good shape and is not bleeding charge pressure. A bad turbocharger cut-off valve can cause problems similar to a faulty/loose wastegate or wastegate actuator.

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