piperX air filter

[rac_gti]

Just purchased a piperX panel filter for my golf today 45 quid and i put it in my golf's air box
hhmmmmm  .. Not sure wot the different but i noticed the engine respond better but not sure abt bhp gained  

[kniterider]

i dont think a 'performance' gain well a noticable one is on the cards unless you invest in an performance exhaust system(if u havent got allready!) and then the induction kit that does away with the complete air box assembly is often a more proved way of increasing bhp, as youve said the engine feels more responsive thats cause its breathing a bit easier!!!!