Okay so I'm new to this whole forum thing. But I've tried to do some research on the Transgo Shift kit for the 2000 mustang GT within the forum and didn't really find anything too helpful. So, I have to ask. Has anyone had any trouble with an over drive light flashing on their dash? I installed the shift kit and everything was fine for about 250 miles but then the car wasn't wanting to accelerate. ( i think there was too much pressure in the valve body) I then got a special tune for the car and what a world of difference! You can barley feel the car shifting, but the overdrive light is still flashing, however I feel like the car has lost some power and I'm not sure why. If anyone has any experience with this, please help me out.