Boost leak?

Hey guys. I just switched from a 2019 VN to a 2022 KN and noticed I’m only getting 13-14psi boost at WOT. Is this normal? Im almost positive the previous owner had an aftermarket intercooler as one of the connectors to the intercooler was slightly loose, but even after tightening that I haven’t seen a change in boost. As a side note, I have only gone WOT in automatic, not with the paddles. Any help would be great!