Dart falls on it's face.

Is it popping through the exhaust, fall flat or does even the exhaust noise go away for a few seconds?

It will cut up or pop and then I get out of the gas and it acts like someone shut off the ignition for a couple seconds and then run normal. It acts like it is starving for fuel. Ramcharger the car runs great around town and even with quick bursts of the throttle.