Allright lets start with the list of new parts ten ill tell you the problem.Starting with all four drilled and slotted rotors and pads.Next is all four stainless steel lines and two new remanufactured front calipers.After all that was replaced had no problems for about i dont know 5k maybe or more.Until one day the front left caliper started locking up and the brake pedal was super stiff.I know there are supposed to get stiffer with stainless steel lines.It was like they kept getting stiffer until the caliper started dragging or sticking.So got it home and pulled it off and replaced the left front caliper again.After that soon came A new master cylinder followed by the brake booster being sent off to be rebuilt by Driftmotion.All because it is abs also forgot to mention.So once again put it all back together now the idle drops and surges dramatically when the pedal is pressed.If anyone knows of this symptom please comment.Thanks