So my car is throwing a random rich code again and it started doing this wired stuttering thing. It has only happened when starting from a complete stop and when I don't give it enough gas. It will build boost if I let it in first gear and barely move. At first I thought it might be the clutch going, but doesn't that usually show up in higher gears first? Also wouldn't the car act like it's in neutral? The other wierd thing is when it is doing this stuttering thing it's violent enough to jerk my head and has no power and the RPMs do not dip or increase. If I stop my car and let it idle for a second it will drive like normal again. What the hell is happening?