Hey guys, im new to this forum! I have a 2006 Mustang GT with Thumper Cams, 4.10 Gears, C&L Racer intake, o/r X pipe, Borla's, and Exhaust cutouts. Ill get a picture up soon and stuff. But this post is about my car problem im having. My car has a surging/ hanging rev. It surges up to like 3k RPM...