I got a 92 camaro rs with a 305 it runs great when cold but as soon as it warms up it starts to back fire when you touch the gas at all but it will idle fine the car has new pump,filter,regulator,dist.,plugs, plugwires, map sensor, coilpack. what gives? What else can i do? My 3.1 is also doing the same thing

 

Sounds like something going on in closed loop. Might be better to ask a mod to move your post from classifieds to a tech area. Good luck.