Just got the software installed and I would say that it works as advertised in the 15 minutes of testing. Normal now feels like sport mode and sport mode now feels really good. I also have the Dinan springs and higher speed turns in sport mode are now really crisp.
14 MB GL550 - Fully Loaded (On Order)
14 Porsche Boxster S - http://www.porsche-code.com/PED27M31
12 BMW 550i xDrive (Dinan S5, Intercoolers, Exhaust, Springs/Shockware, Negative Camber/Low Compliance Arms & Intake; 3M CR40; AG M355, Michelin PSS & Tikore Ti Lugs) - Alpine White, Beige, M Sport, Cold Weather, Premium Sound, ARS, Sport Auto, Power Shades, Side/Top Cameras, HUD & BMW Apps.
13 Infiniti JX35 AWD (Gone)
07 BMW 550i (Gone)
09 Hyundai Genesis 4.6 (Gone)