I noticed the timing chain whine during my track event over the weekend. I think in my case, its an oil starvation issue but the whine is super obvious. It sounds exactly like a supercharger whine. Just something to keep in mind for those who are tracking their cars and hear the whine under heavy braking or hard left turns.
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2016 328ix F31 - SOLD!
2006 997.1 C4S
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