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      01-06-2010, 06:47 AM   #75
Thorney
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Drives: E92 GT3
Join Date: Dec 2009
Location: Milton Keynes, UK

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The whole underside of the front bumper makes up a flat floor section under the engine (hence the bonnet, when you see it) has extra vents above the rad to aid cooling, we also slant the rad back a little. This flat floor means its hard to make use of it for any decent brake cooling without naca ducts and these aren't really enough for brakes. We've moved the brake ducts inboard to maximise the aero effect from the front dive planes (not shown) much the same as the next gen GT2 bumper. Bumper inlets will give about 16x more airflow than an under floor duct as well.