as the topic states after rebuilding ma ls vtec the engine started to misfire i changed the plug wires, bought brand new plugs changed the injectors and it still misfires. i am using 345 lude injectors then i realised that the resistor box was removed would that have caused the misfire? i was also wondering if it was becuz of the computer and the car was having an air fuel problem or maybe the stock fuel pump was causing the problem. rite now i am really frustrated anybody with words of wisdom. thanks in advances

 

i had the same problem wit my ls vtec... and i changed my dizzy and it solved the problem... it was miss fireing at high rpm's

 

u were using the resistor box for those injectors before with no problems?? get the resistor box hooked back up and see what happens..