One of the new M3s? Cool.
You can run more boost with higher octane. Higher octane won't have as much of an effect on NA cars.There's only so much air you can get into a cylinder while staying NA.
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2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
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