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ok, just lookin to buy airfilter now, when i type in what you say its comin up with HKS super power flow induction kit ????? is this the one you mean,its green !!!
hi, ive got a P reg, impreza wrx import, which is the best air filter/ induction kit ????????
Not sure what power runs your car - but for a standard or moderately modified car even regular, paper filter will be fine. And it's cheap.
In general - standard airbox seems to be fine for pretty high power.