I suspect that you have another issue, like a leaking injector, a clogged fuel pressure regulator, a pinched fuel return hose, or a leaking injector. I'd pull the plugs and look for one or more with heavy carbon or damp with gas. I've tested for leaking injectors with a vac gauge hooked to the spray end. If it leaks air, it leaks gas.

You may also have a failed ect sensor, and the ecu thinks the engine is very cold and is throwing in a bunch of cold start enrichment all the time, which will also cause the engine to run like crap. I assume the exhaust smells very gassy? I have an ohm meter test for the ect sensor from the fsm, if you have a multimeter (and thermometer - the sensor is a thermistor whose resistance varies with temps). Cheap part and easy to get to.