my cars acting funny, and i don't know why, all of the vacuum line are hooked up right i triple checked them, i checked suction of the vacuum lines i have, and there good. i don't have any vacuum leaks. but for some reason when I'm driving, and gradually give it gas to build boost, it builds to about .48 then the car hesitates for a bit then back fires a bit, then boost jumps up to .8 then drives fine, until i let off and do it again.

i have an apexi AVCR, set to .8 high boost

also i have an apexi SAFC, i have no setting for it yet cause i cleared everything on it, cause it was running like crap.

and its a pretty big hesitation sounds like its misfiring when i get into boost

i also have a racingbeat FCD
and run premixx gas

 

my car did that when it was running godly rich with x4 720 cc. I got a safc and leaned it out and its way smoother 2-5k then before now.