Quote:
Originally Posted by Ian///M
Changed my plugs with OEM replacement from Bosch from BMS. My car kept dipping revs at idle sporadically. I put the old plugs back and no issues.
Any ideas?
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Go get a set of spark plugs purchased from a BMW dealer. I don't know why... but there is something different from the BMW Bosch plugs(OE) vs the aftermarket Bosch plugs(OEM).