AGU = K03 turbo less power then the others, Large port head, Cabe throttle (Heal toe

) Solid coilpacks, no map sensor, Basic ECU.
AUM/AUQ = K03s more power out of the box and after a re map, VVT, weak coilpacks, weak MAFs, secondry airpump

fault code 17705.
AUM/AUQ are the ones to get for easy power
