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Not so much like a paint can. its more of fluttering chirp.
update from bmw, they said its normal. i asked to hear it on another N54 engine and they let me listen to a brand new 335. the noise was barely (i mean barely)audible, but did exist somewhat. they said as the engine gains miles the noise gets louder. i dont buy it, the noise ruins the engine note at all but WOT driving. the shop forman said its from the wastegates not being completely closed or open at part throttle...does anyone have this problem???
i love the car, but would not have bought it knowing that fixing imperfections is avoided as long as its not harmful to the car.
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