the only problems with the stock intake system are the narrow wavey accordion pipes and the fact that they're huge and hard to insulate against heat due to their size.
it depends what you are after - more sound or more performance?
as for ram air for our cars, i'm not convinced it makes a noticeable difference. i've got probably the biggest ram air setup together with Stillen G3 intake and to be honest i cant notice any difference made by ram air (ie. slight forced induction effect). The only difference my ram air scoops makes is that the scoops block off heat from the radiator so air temps stay pretty stable and cool. That alone gives me better throttle response due to less timing pull.
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