Originally Posted by JHM2K

Don't forget you'll need the N/A BCM... The SRT BCM doesn't have the programming to deploy the spoiler at a given speed, because the SRT spoiler is always deployed.

According to several sources I've seen, the BCM on the SRT allows a bit more "on the edge" handling since the engineers knew the car had sportier and firmer suspension. So, you may very well cripple your handling ability a bit by switching to the N/A BCM. It's simply a setting that allows just a bit more sideways action before the computer arrests your fun.