My RT ran 13.12 when it was 3 days old and around 350 miles last November. I only pulled the stock air filter and lowered the rear tire pressure. Another guy on the east coast recently ran 13.19 totally as it comes off the showroom floor.

With headers and full exhaust, limited slip, stall converter, and drag radials I ran a best of 12.54.

With 100 shot of nitrous I ran 11.69.

So far the auto RT's are laying down the best times. The 6 spds seem to be running slower due to wheel hop issues. I race weekly with some friends with an 09 SRT8 6spd and their best time is 13.20's. They run the same mods as me except the catback exhaust.