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      03-12-2018, 02:24 PM   #26
ajsmithvmi
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Drives: 2009 135i
Join Date: Dec 2017
Location: St Louis

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Quote:
Originally Posted by spxxx View Post
Two options without frontal room for ducts...
1. try the Porsche gt3rs brake ducts that connect to the control arms

2. run two naca ducts from the undertray panel up to 2-3 inch aeronautical aluminum flanges riveted to the dust shields near the center of the rotor. superr cheap and would work great

copy hard motorsport basically
This is what I did. You'll have to run the ducting below the LCA's and sway bar, up behind them and then around the strut.
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