Hey all, I have a 2012 SI with no mods and about 70,000 miles on it. The issue I am having is when the car is running at temp it starts to rev up and down on it's own after i let off the gas; while shifting gears when the clutch is pressed the rpms stay where they were when i pressed the clutch, takes about two seconds for them to drop off. And while driving in low gears, 1 or 2 through a parking lot and such the car jerks a lot when rpms drop down after letting off the gas. I checked the MAF sensor and that seems to be fine, I've heard it could possibly be idol air control valve but before I start ripping things apart I'd see if any of the people in the know may be able to shed some light on this. Thanks!