[RBB]

Originally Posted by Prince_of_Persia

Definitely throttle actuator, take it to the dealer right away.

Here is several more members who had the same issue: http://www.m3post.com/forums/showthread.php?t=696718

Sounds like that could be it. Prince, is that really a $4 or $5K repair? I'm one month out of warranty with only 38K miles on the car. I don't see that being covered under goodwill, which would really suck.