Hello all, I've searched the forum but couldn't find an answer to this problem.

It started about a week ago, it's noticeable in first gear and second at times. Even in higher gears when next to cars I can hear it. On a cold start it doesn't make the noise at all. It's on synthetic oil and was changed 1.5k miles ago. Oils levels are okay.

http://youtu.be/ayDwWpojVdg

Sorry for the bad angles. Any advice and feedback would be great.

Only mods are a K&N filter and Borla exhaust(which I hate). I ordered an Invidia, can't wait to hook it up.