Hey, sorry I didn't see you posted back. what I can tell you is that you need to be lowering numbers in the shift pressure tab. Specifically, shift overlap time, ramp torque, and pressure control solenoid. Lowering the pressure control solenoid milliamps by 10% will give firmer shifts. lowering overlap time will reduce time spent while changing gears which could help with your flare problem.
I attached my stock file and my most recent revision. in the modified one, the torque converter locks up early which is the cause of the slight bump in the middle of second gear. Keep in mind my shift point settings are for a 5.7 hemi and that this tune is not necessarily final. If these changes don't do anything then you still need to be looking for a stock file on the internet to try out. Good luck.
2006 Dodge Charger RT [Stock].hpt2006 Dodge Charger RT [Stock][modified][shift point and torque converter mods][shift pressure mo.hpt