power loss issue

[93slow50]

im having a bit of an issue it seems at 3/4 throttle the car pulls hard but at full throttle the car seems to lose power not missing or anything klike that just feel like its losing power some how oy ya its a 93 306 efi i was wonderin if the fact im using the stock throttle body might have somthin to do with this but i dunno

 

[bsedwebt70-5.0]

check your fuel pressure, fuel filter, air filter, CLEAN YOUR MASS AIR heated wires with electrical parts cleaner, TPS voltage through its whole range - should start at .98 and rise smoothly with no breaks in voltage up to about 4.90 -- try the basics first - you will find it to be something simple most likely - this is part of the fun of these cars