HELP!!! Sputterin : Injectors?

[chrismo240sx]

Hey i have a 93 240sx with 107,000 miles and just recently my car started sputtering randomly when i was driving home from work. Its weird...the car does this only when the engine is warmed up and if i give it more than about half throttle. When the engine is cold i can floor it and its fine and if the engine is warm i can only give it about half throttle before it starts like mis firing or sputtering. Does anyone know what this could be...i was thinking maybe the injectors but not sure....any help would be good thanks.

[NotDave]

check the ohm reading off the injectors.

remove all the injector connections. take a meter and test for ohms on the two metal prongs coming from each injector with the car off. spec should read ~11