Exactly what it says, I got my msp about a week or two ago and i finally am over 500 miles im actually at 780 miles but i enjoyed driving it slow for a change, until i slowly got glimses of the turbo power, very nice by the way, but anyway so I wouldnt know if this is normal or not this noise, exactly at 4500rpms when i'm pushing it. I know there was a thread a little while ago about this same issue and i just spent a ton of time searching for it and i cant find it, if anyone knows which one i'm talking about just directing me there would be a big help or just comments and thoughts on this. thanks guys.