In drive if i mash on the gas my car spits,sputter,stalls, and jumps.. as i let off the gas it coasts fine until i try to accelerate again then my speed decreases.. i've replaced tps sensor and iac valve

yes my check engine light was on before i replaced tps. i did not know tps had to be adjusted properly? i bought the car last january and did a tune up in which i replaced the fuel filter. that's when it started giving me this trouble. i've done just about everything except for... replaced fuel pump, cut the front cats off (cut the rear cats off and replaced with flex pipe) so how should the tps be adjusted? yes my check engine light was on before i replaced tps. i did not know tps had to be adjusted properly? i bought the car last january and did a tune up in which i replaced the fuel filter. that's when it started giving me this trouble. i've done just about everything except for... replaced fuel pump, cut the front cats off (cut the rear cats off and replaced with flex pipe) so how should the tps be adjusted?

If it started giving you this trouble after the tune up...
Did you change the plug wires and are you sure they are on in the correct order?
The intake manifold usually has the number cylinder marked on it but if not, with Ford, one bank are numbers 1,2,3,4 and the other 5,6,7,8, (unlike Chevrolet where the alternate). And the side of the motor with the cylinder head furthest forward is the side with the #1 cylinder.

Not all TPS will adjust but most do. If the holes that attached it to the throttle body were slotted then its adjustable. You would need a digital multi meter to do it. You would have to back probe wires and at this time I don't know what wire so I would have to look that up later on. (I usually use my shop scanner and hook it up to vehicles so all my specs are there and not in my head anymore)

Also make sure wires are not arcing somewhere. Most times you will hear a tick when a spark is jumping. If it started giving you this trouble after the tune up... Did you change the plug wires and are you sure they are on in the correct order? The intake manifold usually has the number cylinder marked on it but if not, with Ford, one bank are numbers 1,2,3,4 and the other 5,6,7,8, (unlike Chevrolet where the alternate). And the side of the motor with the cylinder head furthest forward is the side with the #1 cylinder. Not all TPS will adjust but most do. If the holes that attached it to the throttle body were slotted then its adjustable. You would need a digital multi meter to do it. You would have to back probe wires and at this time I don't know what wire so I would have to look that up later on. (I usually use my shop scanner and hook it up to vehicles so all my specs are there and not in my head anymore) Also make sure wires are not arcing somewhere. Most times you will hear a tick when a spark is jumping.