There are threads you can search for that claim the full power of your car will not be unlocked until something like 3750 miles are on the odometer. 5.14 is my best but I generally get anything from 5.3 to 5.5 depending on my launch. 8k on my car.
Ive gotten several between 5.56 and 5.65. Tried one last weekend in 90 degree heat and a full tank and got a 6.30. I thought it was just terrible after my SRT headers and Diablo tuner. But I seem to have a lot more wheel spin too.
My record is 4.50 in 37 degree weather at 660ft up. In summer time, my best times have been 4.64-4.7x but I also have more mods than when it was cooler this spring. Looking for new personal record this fall now that I'm getting DRs installed too.
I did get my wheels widened to 9.5". On stock 245 tires, my best was 4.60 in cold weather.
Stock, new, and with no practice I was getting 5.5x best. A couple light mods and ALOT of practice I was getting 4.95-5.15 in 70 degree weather. Location has a lot to do with it. On well traveled city streets times are typically 3 tenths slower.