Timing Tuner guys. My question is, " How do i deactivate the nitrous for the upper RPM Window. The instructions say its used with the mode 4 switch. This switch is only on or off. So if the switch is on does it automatically read the rev limiter from the pcm, or how do i set it? Thanks

 

You set the number 4 switch to on. Then you use the RPM **** (i think) to set the rpm. Look in the directions. There is a whold page that walks you through this step. Read it a few times, youll get it.