Vortech V3 Kit Help

[Kenji9000]

Hey this is the first time I have ever done forced induction to a car ever and I just had a couple questions. My car was remotely tuned with boosted performance and it seems to run fine for the most part, but for some reason the car never wants to seem to go past 5 psi, i've seen it hit 6 but thats the highest I've seen it go. I've clamped down the evap lines that could have a potential to disconnect, I've checked my catch can and lines going to the intake manifold and the pcv valve. I've run up and down my entire exhaust, gonna try taking a look at the header to make sure the gaskets are sealing correctly. I'm also running the DW 700cc injectors and the DW fuel pump with a 93 octane tune. I just wanted to see if anyone else could have any ideas as to why it could be having this issue.

[Kenji9000]

Also on startups the car seems to jump to a really high fuel trim from anywhere between 30-40 and then normalizes itself as it warms up or catches itself