I think it's that the FI kit makes more power out of the box, and there haven't been any failures yet. Granted, I'd be shocked if anyone had more than 5k miles on those kits. Again, time will tell.
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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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