I have that noise. I have the 4.8is, and it seems to be right around 2200 rpm. Every gear. Can't seem to find where it is coming from. Mine almost feels like an exhaust leak, but I can't find a leak too.

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2006 4.8is, Black on White. SOLD Sniff Sniff.

2017 F85 x5m, Black on Red. BEAST MODE


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