Sports Air filter do they work?

[forsh]

The best filter to use in my experience is the k&n panel filter with a the air ducts removed, and/or drilling.
I experimented with the vr6 for a while, paper filter with standard box, induction kit, k&n panel with drilled box.
The best results for me was the k&n panel with a drilled box. The standard box with paper filter, made the engine feel very flat until over 4000rpm, with the k&n panel and drilled box, the power band felt like it started at 2500rpm instead.
I think people completely miss the point about performance filters.
You won't get many more bhp/torque overall, what you get is a pretty decent increase in bhp/torque between 2000-4000rpm, a very noticeable difference. This makes the car feel much more driveable, and will improve engine response and acceleration a bit.
Its not just about noise.

here here

[Tazzy]

random topic brought up after 3 yrs, then after 4 yrs, hmmm!

still, its always a topic that gets brought up and misunderstood 

[rossbarry1]

So do i go and buy a k+n or shall i stick with my standard filter and drilled box?