TBH after having the kit on the car now for a few months i am still unsure of any gains.
I have fitted a heatshield around the filter and that seems to work well at higher speeds ie 30+.
One thing i have noticed, low down in the rev range ie pulling away from junctions etc the car seems to stutter and not pull away as smooth as it does with the panel filter fitted. Also at the top end the power seems to die off and it struugles to gain anymore speed.
Bearing in mind this is during the winter with the colder, denseir air, i am a little concernd to how this will affect the perfomance of the car during the heat of summer.
Plus points are the fact that it makes the car sound amazing, but i am more for the perfomance rather than sound, so looks as if i will be returning to the K&N Panel filter, which i prefer.