420A Problems after engine rebuild

[Inkdlyfe]

Alright so I fully restored my motor top to bottom sealed everything nice and tight down to torque specs and didn't go cheap what so ever on the rebuild and is also dead on time . For the most part every sensor is new also. Along with wires and plugs. It started up fine and everything but I need to help it stay running or it will die with out hesitation. I have no cels at all yet still is acting up bad.. when helping it idle it sounds like a really bad misfire and back fire repeatedly the higher the rpms go the harder the back fire.. also seems to wanna jump 2k rpms on its own randomly .. I been looking over it every day can't figure it out at all... Any ideas what's going on ? I don't have any boost leaks or vacc leaks I can find. What's going on plz
I'm fully built for the most part and boosted