Hey guys, one of the first things i'd like to do, is replace my air intake system.

i've had a search, even went to how stuff works, but couldn't find anything explaining the parts of an air intake system...

if i was to replace this system do i need to replace the entire pipe, as well as filter? or can i get away with just replacing the filter?

further, is there much point replaicng the air intake anyway? is there any notable difference, in engine power?

cheers, james