93 Ford Taurus is skipping, has bad gas mileage, uneven acceleration, and looses power really bad. Fuel filter, plugs and wires have been changed out. Tail pipe is really black but will blow your hand off when placed on there. What else could it be?

If could be a loose ground or the fuel level arm in the tank has a loose connection or is going bad.

check camshaft sensor,tune up.

start with don's post..
inner cv joints will make noise too. but not really popping as you said. more a click click....

check your throttle wiring and if posible spray with carburetor cleaner

The problem is air leak between the air filter box and the intake manifold.
Check for crack on tube or disconnected hose.

If it has NOT had a TUNE UP In A Long time THIS is MOST Likely the CULPRET as what you discribe ALL can be attributed to POOR TUNE Up PARTS.

check transmission fluid.change fuel filter and air filter.try changing up on where you buy gas .because bad gas causes problems.

around 14-16 if tire pressure is correct and u are easy on the gas pedal. This assumes the car is in good repair, regular maint.

keep your foot on the gas until the car warms up

Are you using the correct grade of fuel.
Manufacturers claim that a car will do 28 to the gallon.
This is done under ideal conditions at a constant speed on a rolling road.
Wind, hills, overtaking and tire pressures will decrease fuel mileage.
Your car is ok. Don`t expect much more unless you want to drive at 56mph
good luck