Originally Posted by Rob.K
I had the same problem for a while. Noticeable jerks and shakes and RPM drops by 50-250 RPM.
First time I complained about it I was told it was normal for these cars. Second time around they found the throttle body to be loose?
They fixed that and I've been sitting at a steady 600 RPM ever since.
It's worth giving it a try. Thanks for the info.
The AFE throttle spacer kit says it should be tightened to 10Nm here: http://afepower.com/catalog/46-31002/is.pdf