how many miles on your car?
I have a 2012 rt 6sp with 2500 miles on it. Bone stock, with a 1/4 tank of gas or less I run 5.66 to 5.9 on flat surfaces 85 degrees & traction control on.
Launch around 1800, ease the clutch quickly but do not dump.
wheels will slip but not spin.
Wind out 1st & 2nd to 5100 rpms (if your spark retards, you went too far).
You must hit 3rd gear quickly... second will only take you up to 57/58 mph.
I have also tried 'power shifting', leaving the gas to the floor between 1st to 2nd & 2nd to 3rd shifts with mixed results (1st to 2nd usually will spin a bit more).
She didn't break the into the 5s until approx 2000 miles on the engine.
Hope that helps...