Okay, when i am going 20mph and slam on the brakes the car stops very fast. But..........the sound the abs makes is violent and very simalar to the sound of metal crunching. The car also jerked very hard which i would expect but not in the manner that it did. WHY?????? it sounds so bad that the wife tought we hit the car in front of us. thats what it sounded like. I have an 04 GT .