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Just took delivery of a 2011 M3 and read this read. I can't say I hear a ticking when it's quiet, but under any degree of load I hear more of a knocking. Was guessing the valve train or injectors were loud on these cars, but more reminds me of Road Warrior's Falcon XB 351 mechanical lifters. Cool sound, but didn't expect it on the M3. Well, if I blow it up, I guess its' under warranty.
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