vaccum/fuel prob 96 kia sehia

any help anyone can give me will be greatly appreciated....I own a p.o.s kia sephia w/1.8 dohc & 5-spd trans.... I just got my computer back from a rebuild and the car still acts the same way. It will start and it will idle...but it bogs out when you try to accelerate...if you push the gas pedal real slow it will accelerate till red line......if you put the pedal to the floor as if you were trying to spin the tires it will die...im not sure if it is a fuel problem or a vaccum problem but I dont think I can deal with this car much longer...I have had the ecu rebuilt, installed a new air filter and pcv valve....still has no acceleration....I have the kia manual on this car but still cant track the problem....Maybe I should just take it to the Kia dealer but I know I will get raped there... I am just trying to fix this car so I can sell it...If anyone has any suggestions I would really appreciate it...thanks....

SSgt John D Mckenna
Kapaun Air Station, Germany

could be a clogged fuel filter.

Already tried that..thanks anyhow though... God I hate this car.....Maybe I should have them hook the diagnostic machine up to it and see if it spits out some trouble codes....