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BMW 3-Series (E90 E92) Forum
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What causes exhaust oscillation?
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| 05-14-2012, 10:17 PM | #1 |
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Roll Tide
591
Rep 2,346
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What causes exhaust oscillation?
Lately I've noticed that my exhaust note oscillates a good deal both at idle and at a stable cruising speed. What could be the cause of this? I've recently cleaned my intake valves and replaced my spark plugs.
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