When I install the NOS on my 99 Maxima What shot should I Run Safely and Should I do anything to my Timing?

 

A 50 or 60 shot will be safe w/ the stock fuel pump and timing. The timing cannot be adjusted unless the ECU is reprogramed. 70 shot and up you will need a new fuel pump and a fuel pressure regulator. JWT does make a NOS ECU but that sucker costs around 900. The nOS kit is designed to work with stock internals and timing.