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      02-16-2013, 07:10 PM   #22
Moonstone
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Drives: E90 320i M-Sport
Join Date: Jan 2011
Location: Adelaide, SA

Posts: 22
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My 320i sounds like a diesel at idle and all the other ones I have listened to sound the same. Worried me at first but now convinced it is normal. Just doesn't sound like a BMW should. Believe it has to do with the valvetronics setup, quietens down with a few more revs and worse when the engine is warm.
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