MasEkapses

Hello guys i have a sr20det build mated with the power fc. My problem is i cannot get the idling rpm under 1300. As soon as i command lower rpms the car is hunting like mad. i did the idling learning procedure a few times with no avail. I tried to manually set the idle through the idle screw but the screw seems to have no effect on the car. i looked for a vacuum leak but there is none. can it be that the apexi cannot handle the idling of the sr20det? Thanks!