Hopefully that's the problem.Been experiencing a whistle noise on deceleration in the mornings. It goes away after about 5 miles into my commute as the engine gets to operating temp. Interwebs say loose intake bolts. Checked for vacuum leaks and such and couldn't find anything noticeable, so I put a wrench on the intake bolts. the rear one next to the firewall was loose. Not sure how to get to the lower bolts yet.