My sisters 00 gts 6-speed started acting up a few months ago. Seams to only happen after shutting the engine off and getting gas. Once the car is filled up it is difficult to start, won't hold a steady idle, and stalls. If I hold the revs up and drive it hard for a few minutes the problem goes away. The first time I complained the dealer couldn't find anything. I thought there might be some water in the gas tank, so I tried adding some gas drier to the tank. The problem soon came back. Its happens at different gas stations too, so its not bad gas. My father took it in for service a few weeks ago. After getting ripped off on a brake job ($400 for new pads and installation) They proceeded to clean the fuel injectors and possibly the throttle body. My father was told there was carbon or some other buildup in there which was causing the poor idle. They blamed it on the Rod Millen intake that I installed almost 2 years ago. They said something like because it eliminated a sensor it was causing the carbon buildup or what not. I never had any problems with this intake except for the emissions check engine light it throws. I think its for evaporation or something. Anyway, They did their cleaning, and the total bill was close to $1000. Also they replaced a belt tensioner that they claim "someone" broke. Funny thing is I did all the service on the car myself except what the dealer did and I never touched the tensioner. Does anyone have any idea what this could be? I don't want to re-install the stock intake. I think its bs. The only other mods the car has is TRD springs and shifter.