I have a 13 Dart SXT with the turbo and the 6-speed trans. It only has 3K miles and since about the 200 mile mark, the car has been "pulsing" when I accelerate thru 2nd and 3rd gear. By "pulsing" I mean it goes into 2nd gear, climbs to about 3K rpms and the vehicle lunges several times before I can even begin the process of shifting into 3rd gear. When I shift into 3rd, the same lunging occurs. There has been no check engine lights, and while at the dealership today the service manager couldn't tell me why the car was doing it. After two hours of taking everyone in the service department on a test drive, and after eveyone confirming my observations were correct, still no answer. Then, the service manager asked me to test drive a used 13 Limited with the turbo, and it too did the same thing when shifting through 2nd and 3rd gear. In the end, I left with a brand new car still doing the same thing and Dodge has no clue what is wrong. Oh yeah, if you accelerate gingerly, or wild and crazy, you won't observe any of the "pulsing." It just happens when you have the throttle at about 50 to 65% power. Any thoughts?