Hi, I had mine replace within six months from new, and the noise completely went. The car went to the dealers to fix the roof noise (rattles over bumps) and during their test runs ran the fule down to 4 miles left in the tank and the noise is back. At that time apart from saying 'they all do that' they said BMW had sent out a bulliten telling them not to change the lpfp and that new software would be available by the end of June- I am still waiting and the sound is driving me nuts.
Paul
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