Did a run in my car using a G-tech. Best 0-100 was 6.7 seconds, with a crappy launch and the intercooler would've been pretty hot by then too. 1.5 seconds of that was shifting gears, so I could easily get it under 6 with a decent launch and some faster shifting. And if it makes any difference I had a passenger and the AC on :p
Dynolicious is an iPhone app that does 0-100. No idea how accurate it is though.

