1995 Ford Bronco running rough

I have a 1995 ford bronco with a 5.8 efi 351 windsor and I have been having this problem for a few days now. When its in park it idles, runs, and sounds good, but when I put it in drive and take off down the road it starts to run rough and acts like its starving for fuel. I've changed the throttle position sensor, map sensor, fuel filter, and air filter. I've cleaned the throttle body, injectors, and gas line. I've checked the spark plugs and spark plug wires, the catalytic converter, and fuel pressure, and all of those are working good. I don't know what else to do or to check. Can you help me and give me an idea of what may be the problem, or what I can do?