NOS Accessories
Here are some other very nice but not necessary items...
An EGT Gauge is a great way to monitor what’s going on inside your motor. If the temps rise higher
than 800 deg C your motor is running too hot and you need to investigate why. Basically a rich mixture
will show as a lower temp, a lean mixture will show as a high temperature.
An A/F ratio Gauge is just as helpful as an EGT for monitoring what’s going on inside of your motor.
A rich mixture is better than a lean mixture wile running NOS. If your motor shows lean you need to
investigate why.
A fuel pressure gauge is needed if you plan on going higher than 70 hp with the NOS EFI Dry kit.
If you stay at or below the 70 hp level the fuel pressure safety switch that comes in the kit is all
you need.
A window switch is used to control when the NOS is turned on and off. It operates of engine
RPM's. You can set it to turn on and off at particular RPM's. I have mine set to turn on at
3500rpm's and off at 6200rpm's. It prevents the NOS from coming on at too low of an RPM or
staying on when you hit the rev limiter. Basically if you hit the factory rev limiter while
running NOS the fuel pressure will cut and bye bye motor. Only 5spd cars need worry about this.
An auto will shift to the next gear. Or if the system engages at too low of an rpm, under
~2500rpm, bye bye motor. The low limit on the window switch is also useful when launching a
5spd. Most people launch their Max's at ~1800rpms. They have trouble controlling wheel spin
with the normal horsepower. If you add NOS right when you launch your spinning your wheels
for sure. So the window switch will allow you to launch with out the NOS up until you hit
the window, 3500rpms on my set up. You could also power shift with the NOS using a window
switch. But I don’t think the Maxima tranney could take it.
A bottle heater (preferable the NX model since it is pressure actuated instead of temperature or
manually actuated and much more powerful than the other brands to boot.) I have the NOS version
and it works just fine. It’s half the price of the NX version.
A remote bottle opener is great for street use since you can turn the bottle on from the driver's
seat. The NOS brand is a heavy-duty solenoid that attached to the bottle directly or is put inline away
from the bottle. The NX opener is a literal bottler opener. It actually turns the bottle valve when you
flip the switch.
A purge kit makes for quite an intimidating show but if you want to save a little money you can get
the same effect as a purge kit if you hit the spray briefly during your burnout. A second or so is all
it takes. With a dry kit it just doesn't hit quite as hard with air in the line, which can be a very
desirable thing if traction is a problem. You might just leave that air in the line if this is the case. Hello FWD.
I recommend using a push button switch, either in place of or in conjunction with the NOS
arming switch. This will allow more control over when the system is engaged. I have a small
push button switch that I hold in my hand or strap to the shifter. When I am running the
nitrous I can choose to engage it when I need it. If I am racing another car on the street
I can use it if I need it. I can hit it in second and if I’m far enough ahead I won’t use
it in third. At the drag strip I will just hold it down and let the WOT and window switch
control the system.
