Nitrous is one of the most common power adders. It's just as safe as a turbo or supercharger. Just as a Turbo set up needs supporting mods so does Nitrous. When installing a nitrous kit it is important that you have everything you need to get the most "bang for your buck". When you buy a typical kit for your car you get "everything" you need to spray....but unfortunatly you don't. Most common problems on a sprayed vehicle is leaning out or over timming. Their are a few very simple solutions for each of those that will save your vehicle and keep it running strong.

To start, their are multiple different types of nitrous setups such as a fogger; foggers are kits that use a nozzle that sprays into your intake kit before your throttle body. Plate kits are also commonly used, these are plates that sit between your throttle body and your intake manifold and spray in. I cannot mention the first two with out mentioning a direct port nitrous system. A direct port kit is a nitrous system that has a seperate nozzle for each cylinder. This allows best distribution in each cylinder. In addition to those, dual stage (two different sized shots) are another common way to gain power. Dual stages are setup up to run a smaller shot in lower gears and a larger shot up in the higher range. Thus allowing you a boost in power through all gears. By keeping the shot small in lower gears allows you to maintain traction yet still get the added power, and as you get to higher gears the seconde stage engauges and gives you a bigger power boost.

First, if you are running a dry shot (no fuel), it is recomended that you upgrade your injectors and have a tune for extra fuel. If you plan on running a wet shot (both fuel and n2o) it is recomended you upgrade your fuel pump in order not to generate a lean condition. It is also highly recomended that you run a FPSS (Fuel Pressure Safety Switch). This is a switch that you put in-line of your ground wire. It works like this; you set it a specific fuel pressure, and if it drops below that it will break the ground and turn off the nitrous, saving you from a lean condition.

Another common downer to running nitrous is that you have to remove timming when you spray. Alot of people think that mean your car will not be at it's full potential when on motor. Not true, using an ignition timming retard will allow you to cut timming while on spray and allow your car to run at it's full potential on motor. A rule of thumb to use it to cut a degree of timming for ever 50 shot, but depending on your setup and tune, that is not always nescessary. Running a colder pulg is also very important. What ever plug your are running now, once on nitrous you should use a step colder plug, which is similar to when you run boost. Now mind you with all those precautions it's not gaurenteed that your motor will not lean out or detonate, but it is something that can save you from potential problems.

Nitrous activation is next, once your kit is installed and your ready to go, but what activates it? Some of you are interested in momentary buttons(like in Fast and the Furious), but the most sucessful/common way to do it, or should I say the most popular ways to do it are as follows. WOT (wide open throttle) switches and TPS switches are the most efficent form of activation, as soon as your at full throttle that engauges your spray. Along with that a window switch is as a good idea, this keeps the nitrous from comming on too early ( you shouldn't spray below 3000rpms) and from staying on too long, it also prevents nitrous back fires if you miss a gear or hit the rev limiter.

Now that your activation is ready, bottle pressure is another signifigant factor, ideal bottle pressure is between 750psi-1100psi. If you pressure is to low, you will not get good enough flow out of the bottle. If too high, too much nitrous can be a problem as well. Thats why 90% of nitrous users monitor their bottle pressure and use a bottle heater or bottle blanket to keep their bottle at an ideal pressure and temperature.

A common question when using nitrous is how much can I spray. Nitrous is very similar to boost in many ways. It shares the same problems as long as the same rules. You don't push alot of boost through a stock motor, just like you don't spray alot of nitrous through a stock motor. You use what will work for your setup. Their is no such thing as a safe shot. It what will work for your setup. Depending on your compression and tune rules what size shot to run. Your not going to run a 100+ shot on a stock motor, it's not recomended. Just remember nitrous is an effective power adder and when used right and safely can be the ultimate source of power for your vehicle....

Well I hope this write up is helpful to you and it can put some of you in the right direction.

 

Great Right up!!!! STICKY!!!!

 

i don't know **** about the subject, but it sounds like u know what ur talking about. good WRITE*** up

 

If they want it...they can sticky it....

I know alittle bit about the subject...haha....

 

maybe after i get out of warranty range i'll try it haha, so atleast it wont be AS bad wheni blow my car up

 

You wont blow your car up if it's done write....

 

That's not entirely true...

 

Unless your a 2.2 with a plastic intake manifold. I have seen only 2.2 blow up on backfires with Nitrous

 

Lol...how many times do I have to say it...it wasn't because of the manifold...

 

A TPS switch failure isn't the fault of the nitrous... it's the installers fault....
(i'm assuming that's the said incident we are talking about here...)

 

It wasn't the installers fault either...it was a malfunction in the window switch. But really, that's beside the point...regardless this was was a VERY well written and informative piece. Hopefully this will help some people out.

 

thanks...

 

2 degree's for every 50

not always the case depending on your set up.

you can spray as low as you like. it depends on air flow. pure and simple. if you do not have the air flow you need to disperse the gas correctly. you should not spray below 2500 rpms.

you can spray over 100hp on a stock engine. just not very advisable in a 4 cyl world or smaller {3.0>} v6.

all NOS jets, Nx jets, dynotune, whatever it maybe are rated different.

nx jets are to the tire at 950 psi
NOS is to the crank at 950 psi
dynotune is just fucked up.

 

It's the basics for someone that doesn't know about nitrous...it's to put someone in the right direction. Things will always vary depending on your own personal setup....

 

since your up on these? can you tell me where i can hook up a rev limiter lite too? i have a 06 ss ??? thanx anybody??? lol

 

Ive heard a rule of thumb that you shouldnt exeed 20hp per cylinder on stock internals.

kinda makes sense.

 

What do you mean by rev limiter lite? You mean a shift light? If your talking about you shift light wire it to your tach output on your ECU...


I would agree with you...but it's not like that for every car. I know a couple guys from the Honda forum that are runnung 125+hp shots and their motors are running great. If you heard that specifically for Cobalts, then I'd have to agree being I'm no Cobalt expert.

 

Nice write-up.

 

Here is a decent question that I had asked me that I didn't have any idea on.... Can you spray a diesel motor? I have never seen it done but I would have to assume that you could. If you could get enough pressure on the compression stroke I want to assume that diesel and N2O would detonate in each cylinder. Just not sure thanks for any info!

 

Remembered where i read it.


http://www.nitrousexpress.com/Pages/faq.htm

Q. Are there any dangers or things to stay away from while using nitrous?
A. Of course, NX recommends that no more than an additional 20 horsepower per cylinder be used on a stock engine, with a stock fuel pump.

 

I think everyone should keep in mind that these are minimum recommendations to stay in the safe zone.

Of course there are many variables between engines and setups, so if you want an optimal system, do alot of research.
Read lots of books, contact a few manufacturers, talk to a few local experts... and generally do some digging.


Edit:
Also, general thread (such as this) should be used only as a guide line to point you in the right direction... you should never do any significant modding to a vehicle without learning about it first.

 

i Believe that diesels "nitrous" is propane injection.

 

nitrous works on the principle of compression. in a sense.

yes nitrous on diesels works, and works great

 

Nitrous does work on disels...in fact Nitrous Express makes kits for them as well....

If Nitrous Express says it....then I'd have to agree....


you should always try to learn as much as you can both about your vehicle and nitrous itself before you attempt to spray your car...

 

Wow, nice job. Cleared up a bunch of things for me. Def a sticky.

later