Any1 used 1 of these air filters

[0191joe123]

http://www.ebay.co.uk/ulk/itm/251481335659

Has any1 tryed 1 of these air filters on there rs looks pretty much lyk a maxogen obviously if bought with the right pipework

 

[antnee]

I used one before on another car, they are really restrictive. The surface area of the cone is tiny