Because members have installed them and made very little power. Headers are not cheap to install. If you want headers that make power, buy long tubes. The VQ37 comes with very good headers from the factory.
__________________
2011 MB Touring-Sport-6sp-Nav/GTM TT/FI TT TDX/JTran/Kosmic/Eibach/Hotchkis/SPC/CSF/RPS/SoThatsWhereAllMyMoneyWent
|