I have a 15 5.7 Charger I'm trying to VE tune. Originally, it was tuned using the ANN set up but I never could get it to drive right. When stopping or driving real slow like creeping through a parking lot the car would buck. Enough where it would be annoying to drive at times. I figured let's give VE tuning a shot. Right away it ran better. Very minimal issues if any at all but after about 5-10 minutes of driving the idle was all over the place and it would die. Start it up and drive it again and it's fine for a bit and then it's dying all over again. Any ideas?