On my car when I was only hitting 8 psi sometimes then mostly 6 to 7 I was running without the boost jets. Boost came on really slow and didn't hit full until about 4200 rpm. I know that they should be removed when installing a boost controller, but since you are going back to stock i'm not sure if you put them back in the lines they should be in. It might at least help to run quicker spool up.