[2018Aloy]

Hi, I'm trying to determine if I have a boost leak, as a newly visited local shop is stating. I have a CTS intake, so under throttle you hear all kind of air suction noises. None of them sound like leaking air, just suction. The shop doesn't specialize in BMW, so I was wondering if there's a way I can log it in ODB Fusion and see the target/actual boost values. Any specific calculated PIDs?
I'm doubting the shop's expertise, and before I throw more money away on smoke test, I'd want to be more certain. The car pulls decently, and boost flattens out in the 5k range, as it should with N55. Any advice would be helpful, thanks