Hello and Welcome! I'm Billy and i will assist you with your inquiry. Feel free to ask if any further info is needed.
The engine mount (that hold the engine to chassis), have solenoid valves to control the hydraulic flow in to the mount, making the mount softer or stiffer depending on the working conditions of the engine.
This solenoid, or its wiring are faulty. Usually the wiring on the engine mount is loose, or broken, so you need to check that first.
This has nothing to do with the turbo or boost.
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