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Registered User
Join Date: Apr 2011
Location: Sunny Surrey, UK
Posts: 481
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OK, I'm a n00b in BMW bonanza and I own 11S, not 12S, but ever so similar problem had resolved by 1- balancing of throttle bodies and 2- replacing fuel filter... step nr1- will have to be re'done again, because of re'setting computer or a change of an filter...
Best of luck!
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