What is great about the SRT-6 is that most people have NO idea just how fast it is.
Having raced my 92 Mustang in a stock class (11.9 at 113mph), and doing more handling at speeds with my Maserati, my Xfire is very comparative to both of them ... and, dare I say, it felt a lot safer at 150mph than the Maserati did (though the top was down on the Maz at the time, so maybe not a totally fair comparo).
I have a few questions out to the guys at INmotion before I re-chip anything (and will look to lose my resonators for better sound), but their increases seem significant ... I'll likely do a before-and-after comparison at the 1/4-mile (cuz I don't wanna pay for 2 days at the dyno

).
Oh, and I just tried the "W"inter driving setting today, even though it was only wet roads ... traction control light still stayed on pretty solid through 2nd gear and into 3rd ... guess that setting won't help all that much in snow, but that's why I keep the Jeep around.