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, Capristo X-Pipe, Klassen M52R, GMG springs, R8 GT tails, Satin Black badges
2012 Audi A6 3.0T Prestige, Moonlight Blue
2015 BMW X5 35d, Mineral White
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