I have a 02 wrx with several modifications, most importantly a deadbolt super 16g turbo. Lately I noticed that there is a high pitched whine only in third gear, and only when the throttle is depressed. The whine increases in pitch along with the RPM's, but I really have no idea what this is. I don't remember hearing this for the first 9 months or so with the turbo. Any ideas??? Thanks in advance!