guy at work had to go get a chipped (hate that saying) ecu---Honda data is name of company- by the way this guy later turbo-ed it and now its faster than his rear wheel drive s2000, so he seems to know what hes doing. there is also alot of piggy back air/fuel controllers that you splice into ecu wires that can control that--usually says in advertisement if it has that option....apexi-greddy-haltech....