so basically, when im just sitting and idling, if i pump the brakes, the rpms will rise slowly from the idle of like 900, to like 1500, then drop quickly and return to 900. also, my pedal feel is alot worse then it used to be... my brakes arent even a year old (ebc rotors, w/ hawk pads). I can push the pedal down some 2 inches with out it biting. anybody know if this ilde thing is normal, or if it relates to the poor brakes or does god just hate me?

 

900-1500 thats quite a jump. Mine doesnt do that. Check your vacume hose for the Booster. whats your base idle???

Also,it going to take a little bit to build vacume for the booster. so its going to surge if you disconected the vacume line.