I've been getting a high pitched whining noise the past few weeks. Might just be the weather getting cold, but I had the same noise about a year ago right before I blew my turbo. I doubt it's the turbo this time since the new one only has few thousand miles on it. The sound gets higher pitched with increased RPM's and is only noticeable in low gears. Sounds like a Honda in reverse. I thought it might be the trans but it makes the same sound in neutral. Any ideas what it could be?