I had one of these and yeah it sounds good but performance wise its poo!!!
After speaking and having a few bits and bobs done by the JMS boys the best way to get the most out of an air box set up without spending £££sss on a maxogen or V6 air box is to slip a performance panel filter in the standard air box and take off the top CAF (the one that runs down by the battery) the gains are only minimal anyway but its better than an open filter, runs more smoother, it's a hell of a lot cheaper than a maxogen and you get the induction sound!!