After putting in about 5 psi into the system I was able to pinpoint it to the VTC solenoids. I tightened the driver side valve cover and it sealed that leak but I can't get to the passenger side unless I remove the plenum. Now, would that still be considered a boost leak? Everything else is fine, no leaks, at least none that I can hear. I'm guessing the weird sound I'm hearing is not related to this either, but I won't know for sure until I fix this leak.