I recently had a b18b swap into my eg hatch and it was running fine til recently, seems like when you floor it or it passes 4000 rpm the car studders a bit and feels very heavy and doesn't want to go, however it does go except that it feels weak like it is choking or something like that.What should I check for I have check my throttle cable and that is fine ..any advice would be aprrecitated..

 

i would check your fuel pump and fuel lines for any obstructions
when you did the swap did you get a walbro fuel pump ?

 

No I didn't change my fuel pump when i did the swap, i will check like I said it was running fine until this week, I will check it out and let you know

 

like averyvm said check the fuel system, including the injectors. and you might also wanna check your ignition system.

 

OK here might ly the problem, when I bought this motor it didn't have injectors so I wire/put my civic dx injectors into this motor, someone told me that dx and ls injectors let the same amount of fuel out is this true or not? i was thinking eventually getting aftermarket injectors so I decided to put on the dx ones and save up for a new injectors and other misc parts for the motor...

 

i'm not sure if that ur problem cause i think most honda injectors are around 240-260cc except h-series and **** like that.

 

check if you have any vacuum leaks.