This winter I'm adding an NX 125 wet shot, racetronix fuel pump, MSD ignition, CC305 cam, 1.6 RRs, and some other free mods. When should I spray at the track? I know I dont want to off the line, even though I will have nittos.

 

you want to spray as soon as traction allows. ideally off the line is it,but nitto's wont cut it.

you will have to experiment as to when traction will be available.

 

I heard about the 330 mark would work. How much faster would I be if I sprayed off the line and got traction, as opposed to spraying once I catch traction?

 

there is no way to predict it,but you want the torque of the nitrous as soon as you can use it