Ohh yeah.I may have a vacuum leak since my idle bounces around.But Ive already changed out all my vacuum lines.I replaced the throttle body o ring,the throttle body to uim gasket and the uim to the lim gasket.There should only be the lim gasket left.The intercooler pipe couplers as well as the stock Y pipe.
Ive ordered the greddy 2 piece pipe kit so that should reduced the amount of possible air leak areas.One thing I did notice was that before my vacuum hose job I never had a bouncing Idle and now I do.I tried spraying some carb cleaner in the engine bay figuring that the air leak would suck it up and raise the idle slightly.No luck though.I do smell fuel under the hood though.I told my father in law who happens to be a mechanic and he used the emisions sniffer to pinpoint the fuel smell to where the uim and lim connect area but lower down.Im not sure if those are the secondary or the primary injectors.But there definatly a leak there.Could that cause a vacuum leak like you described? I know it causes bucking under light throttle because of the loss in fuel pressure.

 

My post was a link, and I believe the thread has a photo in it of the fast idle cam and wax rod.

 

the photo was posted by jonski.But it showed the idle speed control and the aws solenoid.It didnt point out the fast idle cam and the wax rod.How in the heck would I go about removing these annoying features?