i just put the motor back together and before this i had no issue's with breaking up or anything. if i try to give it full throttle or half throttle it breaks up around 4500-5000 rpm's and the car will not accelerate past that point. it feels like the car just shuts off like there is no power to the car, like there is no fuel??? im confused since i didnt change anything that would affect its drive ability. all i did was change rods.
ls/vtec
81mm
wiseco
eagle
1000cc
3 bar
255 walbro
tuned on crome pro

the fuel pump is working and not cutting out either.

 

comon guys