I bought my 2013 SHO back in Oct 2015. Previous owner installed 3-bar, properly gapped plugs, Airaid filter, and Unleashed 93 tune. I recently checked the 0-60 using the Torque Pro app and was only seeing low 5s. I haven't touched the tune, other than to check that the 93 tune was installed, since I bought the car.
Sounds like I should be seeing faster times. Should I talk to Unleashed about doing some data logging? Is there an amount of time after the tune is installed that you should data log to tweak the settings?