This is an issue that occurs after warm-up. After the car has been sitting long enough for the motor to cool down, its silent until the motor heats up again. Then while driving it, you can notice the sound lessen with acceleration. However, it does seem to lessen with normal acceleration while it sits being idle. I was able to rev the motor high enough one time, that it stopped the sound for a few moments, but then came back as soon as I started riving it again. Any help on this would be great. Thank you! [MEDIA=youtube]xF0pLdFKGIc[/MEDIA]