okay. . . I guess I'll start off in the beginning. I bought the car with no motor and I decided to put a d15 motor that I had. The car had a b16 in it before the original owner crashed it and decided to sell the car without the motor. We put the motor in and we had some problems in the beginning. It didn't have any lights and the signals weren't working. We figured out the problem and the car started to work fine, but the car keeps lagging. Some startups it would run great. Some it would lag and eventually start to bog. It doesn't die out, but it would just keep bogging at certain speeds. Do you guys think it's an electrical problem or is it the body harness i need to change? Any help would be great!! I live in GUAM so, we don't really have that much parts we can get here. We gotta order most parts we need.

 

What ECU are you running, what is the cars trim.