Exactly what I was thinking. The electronic systems in the new cars now-a-days is quite mind boggling for how much they control. Increasing mechanical pressure (not the term I was thinking, but what WRXParamedic said is dead on in my thought process) for better performance. It's odd how the ABS system works since I have had it make funny noises when reversing down hills and using brakes, and it kicks in to an extent where there's some odd sounds, but no vibrations. I thought it was a bent rotor or something, but the dealership checked it out and said it was all good. Just need to get used to the machines running the systems I guess... If you still are uncomfortable with how it's acting just take it in and have the technician tell you what's going on. the sales guys are clueless and the managers will just feed you some easy to swallow b/s that is close, but not a full explaination.