same old k+n question

AUDI TURBO

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ive got a universal ripspeed filter on my car now im sorry to say that but it was 25 quid and it looks great, fitted fine and you can hear the hiss from the bov. So would a k+n, green cotton filter etc make ANY difference. and HOW on earth do you get these carbon intake filters fitted into taht tiny space ?? the filter fills half the engine bay but they also cost £200.00 3 times the k+n price!!!!!!! any good