Embedded Files
Why Nitrous? Nitrous is a noticeably different mod. Not only for horsepower increase, but also for cooling down the air. Even after running nitrous, the air temp remains cool for awhile and the motor runs like a freshly started motor. Within using the 1st bottle in one night, I made 7 or more passes in a short period of time. I turned the stock flywheel purple and burnt up the clutch plate. After installing an aftermarket racing clutch and flywheel, I have now gone through 40+ bottles.
Plug & Play Nitrous Performance:
All major components are contained in the ZEX™ "NMU", which means you won't have any unsightly solenoids or wiring.
For this test I will be using my Zex kit, which I have owned since 2002. At the time it was know as the Worlds Only "Smart" Nitrous System. this is because it uses actual bottle pressure and a fuel jet to regulate the nitrous to fuel ratio, by a delivery hose to the vacuum port on the fuel pressure regulator. When you hit full throttle, the nitrous automatically kicks in, this is because it is hooked up to the TPS sensor for activation.
always optimizing the mix. Never too rich, never too lean! This means that bottle pressure and a fuel jet creates a controllable pressure source along with enrichment. Fuel enrichment happens when this pressure source travels through a delivery hose to the vacuum port on the fuel pressure regulator.
It activates when you hit full throttle:
This means you can sit at the line with the system armed and your hands on the steering wheel. When you hit full throttle, the nitrous automatically kicks in, you don't have to fumble with switches and steering at the same time. When you let off the throttle, the nitrous shuts off.
How the ZEX Nitrous Oxide System Works
The ZEX™ Nitrous Oxide Injection Kit starts with a supply cylinder that holds pressurized liquid nitrous oxide. This cylinder is connected to a normally closed electric solenoid valve through a delivery hose. The solenoid valve is linked to a manifold assembly and is controlled by the TPS switch.
The manifold assembly is responsible for distributing the nitrous oxide to two main areas: the engine's air inlet and the kit's supplemental fuel control circuit. The nitrous oxide delivered to the engine's air inlet travels through a delivery hose to an injection nozzle. The amount of nitrous oxide, which provides the necessary oxygen for increased horsepower, can be adjusted using a metering jet located in the injection nozzle.
For the fuel control circuit, the nitrous oxide passes through a small bleed orifice. This orifice serves two purposes: it provides a reference for bottle pressure and creates a controllable pressure source for fuel enrichment. Fuel enrichment happens when this pressure source travels through a delivery hose to the vacuum port on the fuel pressure regulator.
When the pressure acts on the rubber diaphragm of the fuel pressure regulator, it increases the fuel pressure. This increase allows more fuel to flow through the engine's injectors. The amount of additional fuel can also be adjusted by a metering jet in the fuel control circuit. This jet regulates the pressure that builds up in the delivery hose to the fuel pressure regulator. Any excess pressure is bled off in the fuel control circuit and vented back to the intake manifold plenum through a delivery tube.
Zex Dry Nitrous System
Zex Dry Nitrous System
Adjustable From 55 to 75 Horsepower (using 75 shot)
Cigarette lighter switch activates Nitrous. Once the throttle is open 80% or more, it will spray.
Zex purge kit
Zex purge kit light
2001 Super Street ad.
The price to run Nitrous in 2004 was close to $2.50 a pound and the bottle holds 10 pounds. In 2019, the price was almost $5.50 per pound. With the $500 kit, it was one of the cheapest boosts back in the day. Now with the higher per pound price, it might not be the cheapest price anymore. Around $30 then vrs. $60 now to fill the bottle.
Turn the key in the ignition and make sure the bottle is opened. To activate, press the cigarette lighter in. Once you're on the throttle 80% or more, it's go juice time!
The cigarette lighter will never get hot enough to be functional due to the relay inserted in a series circuit. This only allows a max of 2 amps. This can also act as a valet key; just remove the cigarette lighter when you don't want anyone to use it.
There are some dry systems that can add more nitrous to the mix. They work by having the fuel injectors add more fuel, either through programming additional fuel in the map when the system is on or adding additional injectors controlled by some sort of magic box. Another way to provide some enriching fuel is by doing something like raising the fuel pressure while the nitrous is on. These dry systems can tolerate a little more nitrous.
Nitrous controller
Nitrous controller
A controller will look at your RPMs, your throttle position, and hopefully your fuel pressure, and will only activate the nitrous oxide when these parameters line up in the don’t-explode-the-engine column. but you definitely need something that will keep the solenoids from opening when you’re at low RPMs, are not at full throttle, or don’t have fuel pressure.
You can actually accomplish the basics without a nitrous controller if you use an RPM window switch and have dummy switches for wide open throttle and fuel pressure wired in series.
It is important to measure fuel pressure because you’ll go super lean if you keep spraying nitrous oxide when fuel flow decreases. This could happen if you’re low on fuel and it sloshes away from the pickup, or if you tied your wet system into your existing fuel pump and you’ve just reached the flow limit of that system.
Purge Kit with LED Light Kit
Purge Kit with LED Light Kit
Before the supercharger was installed, I did have the Zex injector filter that I installed on a short ram air intake setup.(2006 to 2010) Today the injector is capped off and I use it as an regular air filter now. The sprayer is now installed in the intake pipe 3 inches from the throttle body.
Video notes:
Recipes and pricing now vs then
Tracing the line down
The Switch
How it works
Purging vrs co2
intake spraying
Google Sites
Report abuse