I have been working on my NX direct port kit for a long time. Trying to get the lines to seal was the hardest part. Then, the rear nozzles would not spray fuel because the lines were too long. I had to move everything back and that took an additional two days. I only had two days to get everything wired up and tested before going to the track. Once I got to the track the kit would not activate. I checked all the wiring over and over. The car is setup for spray and it was running 11.8@114 on motor. I got one 3/4 nitrous pass out of it and went 11.26@121. I think I traced the problem back to the battery. It is the original battery and I believe the bottle heater and underdrive pulley did not help it. My bottle pressure was at 1000psi for all the runs. Any more ideas out there on this problem?