iight i swapped my 96 hb with a jdm b16 and i had to extend the harness so it would reach the passenger side and i did everything perfect, the engine starts up but when i drive it the car boggs around 4000RPM and it wont accelerate after that untill i switch the gear so what can the proplem be? can it be v-tec? rpm module? harness? anything would help

 

I had the same problem, try changing your oil