Yesterday afternoon i started getting a weird noise, it sounds like it is coming from the turbo (TN kit). It is almost like a whistle, but it is not constant, seems like it moves with the idle of the car. It goes away after about 10 minutes of driving. I changed my oil 2 days ago and used mobil1 0w-40, i dont know if this has anything to do with it.

 

check your BOV...might be a leak there. They tend to whistle when they leak. Does it go away when you crack the throttle open?

 

nope, goes a little faster when throttle cracked open, but again stops after about 10 mins. it is almost like a chirping

 

is it a whistle or a whining nosie

 

Is your oil pressure normal after the oil change? I agree sounds like a leak of air somewhere that closes off with heat..

 

yeah oil pressure is normal, seems like it might take a little bit longer to warm up, but i could be imagining that, previously i was running redline 10w30. it didnt do it this evening, i will try again in the morning.

 

If under boost can be a damage to the compressor and or the turbine wheels. Also the turbo can be out of balance also but if under idle then I'm not sure.