When you turn hill descent on it does a few things:
1. Disables 6th gear overdrive
2. Downshifts through each gear (Keeps the revs up)
3. Tends to hold each gear longer when accelerating
I use it around town all the time and feel a difference in the responsiveness / shift logic.
2011 Mustang V6 Pony Package Kona Blue, Airaid CAI, MRT Interceptor Axle-back exhaust, Automatic, Tunes 93 Octane Race Tune, Baltimore Street Mods 10" Racing Stripes, 2010 Mustang GT Ford Racing Strut Tower Brace, J&M Extreme Joint Rear Lower Control Arms, Ford Motorsport 3.73 Gears, Shaftmasters Aluminum Driveshaft, JLT Oil Separator