K&N or AEM
Short rams are worse than stock. All they do is suck in hot air. They make less power than stock. Either a cai or drop ins and maf tubes. Those are your options. I'm guessing you didn't do a whole lot of reading here before you made your choice. It's been discussed plenty of times.
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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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