Vafc

[JDMFantasy2k]

the vafc is a piggyback air to fuel controller. It wires into your ecu.

would I be able to use others? or does this cancel out the usage of any other computer,

this depends on what you're talking about, if you talking about another stand alone system (ie: hondata, AEM EMS) then yes. Those are much more powerful, expensive and harder to use/tune (the EMS anyway)

i suggest you figure out what route you're going to go first before you buy anything, and if i were you, i'd buy a kit, and pay to have someone install and tune it. otherwise, don't waste your money yet.