GRD just ran a group buy on the APS ST kit on another forum. Anyone on the GB list recieved a call from GRD last week asking what program they would like for their kit. They needed to know octane level, exhaust mods and model of car so they could download the correct map for the application. There are different maps available and with time, more maps for built motors, cams, etc. will be available as a good starting point for tuning.