I know its commonly asked question :yawn: , but will i get any benefit from fitting a recirculating dump valve to my standard leon cupra..?? I was told that more often than not fitting a induction kit or cone filter actually reduces power and so I fitted a K&N panel filter and now wandered about a dump valve. Seen posts about fitting a recirc valve and cone filter to get noise but if I’ve been told correct then this would loose power..?? :confused: