Alot of people have been acquiring Nistune lately, and ALOT of people don’t have a damn clue what they are doing with it. Alot of people will soon have blown up cars if they do not bring their car to a professional car tuner.
So you have a Z31 with pallnet rails, larger injectors, big turbo, nistune, and a monkey on your back to get it on the road, well, don’t forget you need an adjustable fuel pressure regulator too. The stock FPR runs at 37psi (ish) so no, your 90000cc injectors are not flowing at 90000cc’s with it, you need an adjustable regulator to bring up or lower the pressure so that your new injectors are flowing at their from the factory rate. DON’T cheap out on this, I don’t care, by the damn Fuelab or Aeromotive regulator.
It also helps to have a wideband o2 sensor installed. No really, install one now before you do anything else. This isn’t 1930 anymore, nobody is tuning by spark plug, install a wideband before you blow up your car like a dummy.
That being said, we can move on to the fun stuff, resizing your injectors in Nistune and getting the car running.