Quote:
Originally Posted by vasillalov
Not having experienced it myself with S58, but having owjed a highly modified N54, this sounds like misfires at idle. The MSD80 and later ECUs have "Rough Running" control settings. They are adaptive and I believe fairly normal for direct injection engines. I would count it as normal.
On my N54, new spark plugs every 10K miles do wonders.
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So the "rough running" is a sort of a mode that may have been set on purpose?