Vantage select has a braking sensitivity. Set it to a low number and it'll only brake when you hit them hard. A high number and it'll brake almost everytime. Think of it like a pendulum inside - when the pendulum reaches a certain point, based on the sensitivity setting, it'll activate. Keep in mind that the pendulum is also reactive to hills - have the setting too high and you might find brake buddy hitting the brakes going down some grades because it's swinging forward.