For the last week or so I've been having a bit of a problem with my ST with 4000 miles. The three symptoms are: 1. When driving on side road (25-35 mph) I have the feeling that when stepping off the gas pedal the car glides for sometime. No deceleration 2. When revving at idle the rpm don't seem to come down as fast and as regularly as they used to. There is a pronounced pause around 2000 rpm. 3. I seem to have more turbo lag that I can remember. Could a loose fitting in the intake be the cause?