surging and and stalling
 

i have 89 mustang gt auto, just put a tfs5142000 cam in it and a typhoon upper an lower intake. when I have the car in drive and my foot on the brake the idle jumps up and down then it stalls, but if u just take off it runs fine then come to a light and stop again it does the same thing over agian, PLEASE HELP, thank you, gmann22281