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Hello all I have a 1992 rb25det swapped gtst. So the run down. Car idles at about 1k but its consistent. Has a power fc. Full 3inch back . Intake and that is all as far as mods go. Car pulls -20 in vac And hits full 7psi boost. However car feels slow as dirt and at about 5k rpms to 6k it'll sputter really bad and not want to go anywhere. But if you only hold it to about 2 psi till 6k from 6 to 7.5 k it'll feel like a rocket and like its suppose to be. Things I've done. Checked for boost leaks. I found 2 small ones and fixed those. Changed plugs however I haven't re gapped them from the .8 they come in. Changed and liquid taped coil packs. Car runs extremely rich like 9 when full boost. Afm doesn't have any sticker or anything on it for me to know which one it is. Any info as to what else I can do to get this car running good would help and thank you.