Long tube headers are absolutely not a waste of time, as shown by many dyno charts in this forum. They're just not a great bang for the buck item when you figure in the high labor cost.
You're absolutely correct on shorty headers, though.
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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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