I have just installed a trickfloy plenum and frpp 70mm tb on my 04 gt. I now have a strange type of rpm hanging that I have yet to see when searching old threads. My rpm likes to jump 100-250 rpm everytime I take my foot off the gas and press the clutch pedal. In addition my enginge rpms drop but freeze for about 3-7 seconds at 2100-2200 rpm and then again at 1600-1700 rpm. Could it be a selectively sticky IAC? Does anyone think that the computer is still learning? Its been 2 days and around 150 miles since I last disconnected the battery for 25 minutes. I have been known to fix things until broken so I wanted everyones opinion on whether to pursue repairs or remain patient. When the engine finally does fall to idle, its pretty normal around 800-850 rpms. I checked for vacuum leaks with carb cleaner and no sign or sound of one. The tb does have the small hole in the blade. I dont have a cai. The tps is properly adjusted to .98v at idle. Where do I go from here?