Sorry but I think closing that hood vent is a stupid idea. I am sure BMW engineers know 1000x more than just about anyone on here when it comes to designing an efficient intake. A V8 that revs to 8300 rpm and makes 104 hp/liter needs a good amount of air otherwise the engine would run out of breath far earlier. There is a reason the vent is there.
2012 Audi R8 V10, 6MT, Suzuka Gray, Larini Clubsport exhaust, GMG springs, Satin Black badges
2012 Audi A6 Prestige, Moonlight Blue
2009 Lexus ES350, Sparkling Graphite
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