Nope, it's federal. The Clean Air act made it illegal to remove a working cat and replace it with something that doesn't do as good of a job as the OEM one.
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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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