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      10-28-2012, 03:11 PM   #2
hugehead
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Drives: E90 M3
Join Date: Feb 2010
Location: manchester

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x pipes alone will not gain you more power ....you need to have the full decat system and a remap with probably net you an extra 15-25 bhp(depending on which system you fit )....and if money is no object then fit some aftermarket exhaust maniflow as well , or better still just bolt a supercharger kit on then you have all the power that you every will need !!
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