Whine/Boost leak/ Turbo?

[Techen]

So, Last night I've noticed under hard boost am getting a sort of metal whine or air sound, It's hard to describe it as my intake sound almost covers it but you do notice the sound, It's just occurred last night. I think it's coming from the left side of the engine and not the right which am guessing isn't the turbo making the sound but I can't be so sure. Is this a boost leak? I can't really see anything loose, Am under a remap stage 1 revo but I didn't really expect it to to any damage to anything. Car in Sig

 

[SootySport]

The turbo does give out some odd noises sometimes. Usually it is to do with the weather, humid atmosphere seems to make mine whine a bit, especially under full throttle. I've noticed this on all the turbo cars I've had in the past as well. With a stage 1 map the turbo is also working harder than it used to, so not surprising. As long as your not seeing too much smoke and not loosing power, all should be well.