@Mikemr305 You guys have me so paranoid now of course, I have a brand new 2021 Veloster N which I absolutely love. Bone stock, have about 2k miles on her already.
I listened to a couple of the videos posted here about the turbo whistle, and I have almost the same exact noise under load. Correct me if I'm wrong though, is this not an expected noise from a turbo under load? I've had that exact noise since I rolled it off the lot and I figured it's just a normal turbo whistle, it's not overbearing, no psi loss, no issues thus far, noise has not gotten any louder, etc.
It doesn't really happen at all until > 10psi, specifically at max (~15psi) in 6th gear under load, but can happen in essentially any gear as long as it's near 15psi and the turbo is under load which is why I believed it to be normal.
I'd have to watch more videos of other velosters, but this has gotta be a normal sound coming from a turbo spinning at thousands of rpms moving tons of air, no?