1jz_240

Alrigt so I have a 91 s13 with a ka24de and I've been changing everything around the motor slowly just to ensure reliability because it has 215xxx miles on it and they can only last so long but I want it to last until I can collect the rest of my 1jz swap parts.

Anyways. To the problem. When I start out like from a stop in first gear almost everytime it like bogs for a moment then it's like it finally gets gas fed to it and it finally picks up power and goes. And it usually does it shifting in to 2nd-5th until I get to a little higher rpm range. Does anyone know what it could possible by? Fuel injector? Fuel pump? I have no idea. And help would be appreciated. thank you!