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      08-30-2020, 06:05 PM   #12
513Mugsy
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Drives: BMW M240i xDrive
Join Date: Jan 2020
Location: Cincy, OH

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Could the light metal clinking/rattling noise just be the rapid heating of the exhaust and cat? It does run just to the left foot of the passenger side foot well. These noises are usually amplified with a downpipe with or without a cat. Seems that a lot of people hear this after installing one of them. Not to say that you have one, but maybe it is what your are hearing.

But the shaking could just be a coil pack that is a little bit weak that evens out when warm. My wife's Mini Cooper S has this issue every 30k miles it seems. So I just replace all coils and plugs and issues go away. And mileage comes back to 35-38mpg. Worth a try. I don't have any shakes with my M240 yet...31k miles.
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