I always understood that the "Power" button on the M was to make the throttle response/pedal more sensitive. Sounds like this Sprint Booster gizmo [http://www.turnermotorsport.com/p-18...2001-bmw.aspx]
is doing exactly what the Power button does...
Can someone who owns the Sprint Booster post some responses WRT how the car drives with both the Sprint Booster AND the M3 Power button at the highest setting?
Does the car just start to magically move when your foot thinks about pressing the gas pedal? >=)