As darren said 'aluminium intake pipe , Velocity trumpet/stack and K&N filter ' you can also get a blox filter either , actually they do a velocity stack with filter package , but id also add a cold air feed to it , will have a good set up with this,
for the price and mugen and comptech i wouldnt bother
if you do want an enclosed set up though the dc2 box with a k&n filter and a good cold air feed into it should give same or dame close results as mugen/comptect , and 1/3 the price if not less, aem v2 is goold as it draws cold air but is far from the trottle body menaing it only makes power high up the revs, and can get waterlogged which is bad ,