I am have a 2009 mustang gt with the 4.6 with a manual. And i am having touble with the RPM's when i let off of the clutch from a dead stop. i have had the car for about 4 months i bought it used and it only had 1600 miles on it. The problem is that no matter what i do the RPM's want to dip down about 500 or so when i let off of the clutch and it doesn't matter if i easy on the gas or if i give a lot of gas. And this loss of RPM's is making the car want to lunge. it even does it when i just let off of the clutch and give it no gas. I was just wondering if anyone else has had the same problem or if i am just that bad of a stick shift driver and need to get some more practice in.