Anyone have this idle problem?

[SlowStang2]

When my car gets to about the R in NORMAL range, the engine has a hard time idling. I'll turn it on, the RPMS will shoot up to 1800 then back down then back up and then it swings down, but before the RPMS come back up again it stalls. Only remedy to keep my car on is to rev it high about 2 times, then the RPMs will drop normally to idle without doing the "seesaw" effect. Jeez, its like 1 problem after another with this car..

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94' Stang GT Convertible --Cobra upper&lower, GT-40Y Turbo Swirl aluminum heads, Mac cold air w/K&N, BBK equal length shorties, BBK offroad H-pipe, American Thunder cat-back, BBK T/B 65mm, 24lb injectors, Pro-77mm MAM, pulleys, aluminum driveshaft, 3.55s, Steeda Tri-Ax shifter, adjustable fuel regulator, Steeda strut tower and subframes 14.2@102 MPH on G-tech;?MPH at track. I know, I know I am working on it. Now I have FRPP 1.7 RRs and new lifters, yes the ticking is gone!!!