Thinking of putting a pipercross panel air filter in my wrx impreza. I currently have a standard filter. Will this give me better performance as advert suggests?

Technically it will allow slightly better breathing but I doubt it will provide the hp gains advertised, it won't make it any worse and you'll probably 'feel' crisper throttle acceleration

Cheers Stants , crisper throttle is what I'm looking for as I find pulling away feels a bit dead until turbo kicks in.