surging and sticking gas pedal

[rod92]

my car is a 1992 gt 5spd, bbk long tubes, e303 cam, 306 cu in, 75 mm throttle body, pro-m mass air meter, performer rpm intake, gt-40 heads 30 lb injectors

At first my gas pedal was sticking. before i would start the car i would have to jam it down really hard. then i took off the throttle body and cleaned it thoroughly. it was fine for a short while and the pedal no longer sticks when the car has been sitting. but now it seems as if my car is a cold blooded carbuerated car bogging and backfiring at first start. in addition while driving the gas pedal will stick at a higher rpm than normal, and when i come to stop signs it will continue to stick until keep tapping the pedal. any help would be appreciated

 

[HISSIN50]

if it happens often enough, one can disconnect the linkage to see if the TB is sticking (the butterfly) or if it is the cable.

for the performance, have you pulled codes?

good luck.