Saleen provides a reflash similar to the one in the S281 SC that comes with a 36,000 mile warranty. I'm going to get a custom tune, though, and I'm not driving it out of the shop until I see the A/F graph on the dyno plot. I'm sure it'll be fine.
How about this-
5.0 mag tested the 05' S281 SC and ran a 12.8 at 114.
Not to bad. It will be nice to see some other mods/different tunes and see what it can do.