This is my first visit to this forum so bear with me! I just completed a front brake job on a friends 2003 Limited 4Runner. After completing the job it had a severe pulsation when braking that would shudder bad and was worse as you were braking at higher speeds. I had the rotors turned at a local shop and they were a little warped and I was told they may shimmy a little or not at all after taking them back for a second check. It still shudders bad. I feel it as soon as I start backing down the drive and it is not in the pedal. Are my rotors that bad out? or when i compressed the pistons did I screw up the ABS in some way? I am baffled as to whether I need to just get new rotors or ??????? Thanks for any help!!