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Old 11-25-2018, 08:47 PM
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Firstly, your turbo doesn't have a waste-gate. The turbo is a variable geometry turbo. The vacuum actuator controls the turbo boost via changing the geometry of the turbine inlet.

Have you checked the pressure converter? This controls the vaccum to the VGT actuator.

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Wayne
2005 BMW X5 3.0d (b 02/05)
2001 BMW F650GS Dakar (b 06/01)
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