andrew34:
Can someone explain: if this plenum resolves a simple design flaw - intake air hitting a straight wall as opposed to being split and directed giving a claimed increase in power, why don't Porsche fit it as standard?
Because Porsche engineers are not the brighest, and they don't have a massive array of R&D tools to test this sort of thing - accurately.......
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2009 997 GT2 659PS/827NM DIN