Again I'm selling this as I'm trying to release some funds to get back into bike racing.
It has been used but is unmarked.
According to Tecnocraft this is the most effective part of their 'Envy' intake system and has been shown to give increases of more than 10bhp over stock http://www.m3post.com/forums/showthread.php?t=547162
To others it is just considered engine bay bling
what I can say is that it does change the sound of the air intake and makes it sound more throaty.
To buy it here will cost over £600 I'm after £300 delivered. http://www.racepartshop.com/brands/t...hargepipe.html
Another thread on it here http://www.m3post.com/forums/showthread.php?t=338603