Whats goin on guys. This morning I got into my 06-S it starts up fine. After I give it gas and let off, the revs drop then bounce up to about 2500rpm and proceed to drop and go up a few times. It stops until I again give it gas. I have a CAI it was raining last night, but i was not driving until after it rained. I do not think I came across any water that would have been sucked up. It sounds almost as if air is leaking somewhere along the exhaust, I may just be paranoid. Maybe my A/F ratio is being screwed up or a sensor was knocked loose?? Help asap please. Sorry if this isnt making much sense I hope theres no water in there!!