Possibly boost leak

[jaktheripper]

Ok, I'm not entirely sure what this is, but when I start my car up cold and go down the street, when it starts to get into boost I can feel it holding back. Like as soon as it hits boost it pulls you out of your seat forward a little like im applying the breaks, then I shift and it's usually fine from there on out. It usually only does this in second and third gear, and the problem goes away after driving a little while. I thought maybe a boost leak, but I'm still new to turbos so I'm not sure. I have metal intercooler piping and an Apex-i bov.

 

[jaktheripper]

I drove it all day today and it was always fine except for the first 5 minutes or so of driving right after I started it first thing in the morning. I have no idea...