It's a steal air filter:punk0000:
https://img112.imageshack.us/img112/...lico002lv6.jpg
also the frame is of steal
https://img112.imageshack.us/img112/...lico003bp2.jpg
here you can see how much light undergoes the holes
https://img112.imageshack.us/img112/...lico004wx2.jpg
the sound is very good....it hears the whistle of the turbine so louder!!!!:dj:
It's similar to a blow-off when you relet the accelerator pedal!:board_yu:
it seems that engine rounds go up more fast!:thumbup1: