i have a tick that comes from an area just to the right of the throttle body. It seems to come on after some hard driving. It will go tick tick tick tick for about 15 seconds, then it goes off again, it goes back and forth doing this. I have compared the ticking on my car to Girths car, which is stock, after he got done running the autox. His was there as well, but not as loud. It seems like it comes from these two valves that are connected vertically above eachother on the pipe coming from the TB, right as it curves down towards the center of the engine, IIRC. I have had it for awhile, but didnt notice it until after i had increased boost and opened up the intake. But then again i was more paranoid to engine sounds after that.