1987 Chevy S-10 starving for fuel

My truck has been sitting for 6years and I put back on the road and its starving for fuel does fine moving around the yard but when u hit the road and mash the throttle it hesitates bad and sometimes cuts off u have to rush the throttle to keep it running at times but I have changed fuel pump, filter, throttle body, and tps sensor and I also drained the old gas out before I started to crank it replaced it with 92 octane help me I have no idea what it is please give me some tips somebody said it could be the map sensor but I dont know could it be and there is no check engine lights on