attn k_w and realityhammer

a friend of mine with a 2-liter s2000 is thinking of adding a VTEC controller to his car. he hasn't done any other mods yet, and i'm thinking that switching the changeover point won't do much without a few supporting bolt-ons.

should he get at least cai/header/cat/exhaust out of the way first, or am i off-base on this one? any other advice?