Without the tune that comes with the sc, it'll either run like crap or not run at all if you install the injectors. I'd just wait and do it all at once.
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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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