apexi vafc

i have an apexi vafc and have no idea how to use it. i printed the user guide and it just gave me mathematical equations and shit. can anyone give me tips or guide me in the right direction. i hate not having the knowledge to tune it.
teal_dx wrote:Don't waste your time installing it. It is technology from almost a decade ago. Instead of a piggyback system hack like the VAFC, go with a chipped ecu and get dyno tuned.