I have the NX MAF kit in my 97 T/A. The problem im having is that when I spray in the higher RPM range, I can only spray for about a second and then it feels like the engine cuts out. This happens especially at highway speeds and at high RPM's. Could it be that im running low on fuel pressure? I also have a slight pinging problem at lower RPM's. 2500K to about 4000K. I increased the fuel nozzle size one up and that seems to have increased my first problem. I can't win!

 

What spark plugs and what is the gap at?

Matt

 

Connect a fuel pressure gauge to the Schrader valve on the fuel rail and temporarily tape it to the windshield and monitor fuel pressure during spray. If your fuel pressure is dipping, you found the issue.

 

Whats your bottle pressure?

 

Let me answer all questions. First of all My bottle pressure is a little over a grand I just filled the bottle. My spark plugs are the stock AC Delco platinums that I just changed 2 months ago with stock gap. Now I know im suppose to put colder ones in so I bought the NGK Iridiums 2 steps colder. Just haven't put them on yet, too darn difficult. I can't check my fuel pressure off my service port because thats where I have my fuel feed line coming from for the nitrous. Although I could probably hook it up to the service port on the NX fuel selnoid. Could the spark plugs make that much of a difference???

 

ditch those plugs and put NGK tr6's gapped at around .035

and YES those plugs make a huge difference.

 

I have the NGK TR7IX. I guess I have no choice but to put them on. I'll give it a shot this weekend. By the way, what should I gap those to?