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2013 550 Now Has 445 HP
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08-23-2012, 04:44 PM
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bobblehead
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No. You dealer is wrong. the bump of hp is more than remapping of software. It's the valvetronic added to the engine.
Only true of change in hp if you ordered a 550GT
http://www.bmw.com/com/en/insights/t...lvetronic.html
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