Is any one using them, and do you need a s-afc for that injector. Ive seen that some one says they are usein the same brand injector only the 310cc ones without anything. Will be used with star stage II kit with full 2.75 exguest and udp. Need to upgrade so there is no change of going lean.

or should I go bigger I know that I have to chanf the S-fmu disk to like 8:1 or lower. Tring to hold off till the new apexi s-afc is out.