after running my sr for a while i have problems in boost. it feels like i am dragging a parachute. im currently running at about 9 or 10 psi because of downpipe test pipe and such... cold air too. is this a fuel problem or possible knock sensor? doesnt really feel like its misfiring. but just in case i have the apexi s-afcII on the way!!! anybody have anything to say about the safc or my problem please lemme know