I have the NX dual stage N2O, the MSD digital 6+ and two rpm widow switches.....

But how do I hook them up to work together?? I want to use the timing retard biult into the MSD for the second stage. What RPM should I have the first stage start and stop at? and the second stage start? and everythign end at 5800.
How do I wire it up so that If I want I can only use the first stage or just the second stage?

or am I overthinking this? can I jsut wire it up like its 2 different kits? have hte first stage bypass the MSD, and hten the second stage go through the retard, and have it all wires up as two, with two arming switches?

 

Hard to say when to stop and start your first kit. That depends on your traction and the rpm you plann on spinning your motor to. General rule is dont spray under 3k, but that's not absolute.

If you're using two window swithes, then you should be able to use 1 master activation swith for both systems, but I dont recommend that you do. If you do, during a pass, you're stuck with the rpm resets on your window switches.

As for my two stage, I run one kit off a micro switch on the throttle body and the 2nd stage off a button on the shifter handle. This way, I can have better control of the second stage. And if I dont need the second stage, I dont have to use it. Also, If I'm having slight traction problems with the 1st stage, I can wait till the car completely hooks before hitting the second shot. On the street, some times that's not till 2nd gear, so using RPM setting alone for activation, isnt always practical. A combination of 2 window switches and 2 activation switches seems like a good choice though.

 

so you say run the first stage as a normal RPM activated switch and then have hte second stage come on when I push a momentary switch? so I would use a 100 (or 50) shot for the first and then have the secont a 50 (or 100) to total a 150 shot??
this would be one arming swtich for both stages right? start at 3000rpm and hit the momentary when I get good traction? but how do I make sure that it cuts off at 5800 when I shift for sure? I dont want ot hold the button down while shift by mistake? would a wide open throtle position switch fix this?

So how would I take advantage of the retard biult into the MSD this way??? wire the momentary through it?
how large are you spraying at first and hten after your micro switch?