Basically I was told by my step father what the Tech who worked on my car said.
Alot of newer cars don't have a throttle cable anymore and it is all run off of computers. The Tail light wire separates into 3 lines to each of the Modules (BCM, ECM, ABS CONTROLLER) when the resistor or LED bulb was put in the vehicle (maybe a combination of both) it sent signals to these computer modules and caused the BCM to think that the brakes were applied even when they weren't. This caused the car to only allow 10% throttle which is why the car wasn't accelerating. When they replaced the BCM the car was still doing same **** so the engineers at Nissan said to test the PCM it is fine. Next is the ECM. when they replaced that and the abs controller was trying to relearn the BCM and ECM it couldnt for sum reason. At first the car was running but shut off on the way back to dealership and when they turned it back on same problem happened. The Engineers at Nissan then said to unplug the abs controller and drive the car. Well the car worked at that point so they said to replace the ABS controller.
That is all replaced now and the car is running great! Even seems to be running better then before but maybe it runs same as before but I havent had the car for 3 weeks and my have lost the feel for it? LOL
But honestly it seems to run better! I am no longer touching anything to do with electrical to my car again!!!