My 04 EM2 is making a fast paced knocking or almost rattling noise when i get into the mid to high RPM range in 1st and 2nd gear. It also makes the noise when my car is in neutral at idle when i take my foot off the clutch. I thought maybe it was the throw out bearing in the clutch so i replaced the clutch and flywheel but my car continued to make the noise. Has anyone had the same problem or know what it could be?